Bumped version to latest.4

For intersection at https://www.openstreetmap.org/node/65299217
`are_parallel` in MergableRoadDetector::HaveSameDirection is false
for South Van Ness Avenue with 150 meters

.github/PULL_REQUEST_TEMPLATE.md

@@ -4,6 +4,7 @@ What issue is this PR targeting? If there is no issue that addresses the problem
 
 ## Tasklist
  - [ ] ADD OWN TASKS HERE
+ - [ ] CHANGELOG.md entry ([How to write a changelog entry](http://keepachangelog.com/en/1.0.0/#how))
  - [ ] update relevant [Wiki pages](https://github.com/Project-OSRM/osrm-backend/wiki)
  - [ ] add regression / cucumber cases (see docs/testing.md)
  - [ ] review

.travis.yml

@@ -422,7 +422,7 @@ install:
 script:
   - if [[ $TARGET_ARCH == armhf ]] ; then echo "Skip tests for $TARGET_ARCH" && exit 0 ; fi
   - make -C test/data benchmark
-  - ./example/build/osrm-example test/data/ch/monaco.osrm
+  - ./example/build/osrm-example test/data/mld/monaco.osrm
   # All tests assume to be run from the build directory
   - pushd ${OSRM_BUILD_DIR}
   - ./unit_tests/library-tests

CHANGELOG.md

@@ -1,4 +1,37 @@
 # UNRELEASED
+  - Changes from 5.14.3:
+    - Bugfixes:
+      - FIXED #4704: Fixed regression in bearings reordering introduced in 5.13 [#4704](https://github.com/Project-OSRM/osrm-backend/issues/4704)
+    - Guidance:
+      - CHANGED #4706: Guidance refactoring step to decouple intersection connectivity analysis and turn instructions generation [#4706](https://github.com/Project-OSRM/osrm-backend/pull/4706)
+
+# 5.14.3
+  - Changes from 5.14.2:
+    - Bugfixes:
+      - FIXED #4754: U-Turn penalties are applied to straight turns.
+      - FIXED #4756: Removed too restrictive road name check in the sliproad handler
+      - FIXED #4731: Use correct weights for edge-based graph duplicated via nodes.
+    - Profile:
+      - CHANGED: added Belarus speed limits
+      - CHANGED: set default urban speed in Ukraine to 50kmh
+
+# 5.14.2
+  - Changes from 5.14.1:
+    - Bugfixes:
+      - FIXED #4727: Erroring when a old .core file is present.
+      - FIXED #4642: Update checks for EMPTY_NAMEID to check for empty name strings
+      - FIXED #4738: Fix potential segmentation fault
+    - Node.js Bindings:
+      - ADDED: Exposed new `max_radiuses_map_matching` option from `EngingConfig` options
+    - Tools:
+      - ADDED: New osrm-routed `max_radiuses_map_matching` command line flag to optionally set a maximum radius for map matching
+
+# 5.14.1
+  - Changes from 5.14.0
+    - Bugfixes:
+      - FIXED: don't use removed alternative candidates in `filterPackedPathsByCellSharing`
+
+# 5.14.0
   - Changes from 5.13
     - API:
       - ADDED: new RouteStep property `driving_side` that has either "left" or "right" for that step

CMakeLists.txt

@@ -61,7 +61,7 @@ if (POLICY CMP0048)
 endif()
 project(OSRM C CXX)
 set(OSRM_VERSION_MAJOR 5)
-set(OSRM_VERSION_MINOR 14)
+set(OSRM_VERSION_MINOR 15)
 set(OSRM_VERSION_PATCH 0)
 set(OSRM_VERSION "${OSRM_VERSION_MAJOR}.${OSRM_VERSION_MINOR}.${OSRM_VERSION_PATCH}")
 

CONTRIBUTING.md

@@ -1,6 +1,6 @@
 # Everyone
 
-Please take some time to review our [code of conduct](CODE_OF_CONDUCT.md) to help guide your interactions with others on this project.
+Please take some time to review our [code of conduct](CODE-OF-CONDUCT.md) to help guide your interactions with others on this project.
 
 # User
 

data/driving_side.geojson

@@ -36,7 +36,9 @@
     },
     {
       "type": "Feature",
-      "properties": { "driving_side" : "left" },
+      "properties": {
+        "driving_side": "left"
+      },
       "geometry": {
         "type": "Polygon",
         "coordinates": [
@@ -399,7 +401,9 @@
     },
     {
       "type": "Feature",
-      "properties": { "driving_side" : "left" },
+      "properties": {
+        "driving_side": "left"
+      },
       "geometry": {
         "type": "Polygon",
         "coordinates": [
@@ -506,7 +510,9 @@
     },
     {
       "type": "Feature",
-      "properties": { "driving_side" : "left" },
+      "properties": {
+        "driving_side": "left"
+      },
       "geometry": {
         "type": "Polygon",
         "coordinates": [
@@ -589,7 +595,9 @@
     },
     {
       "type": "Feature",
-      "properties": { "driving_side" : "left" },
+      "properties": {
+        "driving_side": "left"
+      },
       "geometry": {
         "type": "Polygon",
         "coordinates": [
@@ -1277,7 +1285,9 @@
     },
     {
       "type": "Feature",
-      "properties": { "driving_side" : "left" },
+      "properties": {
+        "driving_side": "left"
+      },
       "geometry": {
         "type": "Polygon",
         "coordinates": [
@@ -1308,7 +1318,9 @@
     },
     {
       "type": "Feature",
-      "properties": { "driving_side" : "left" },
+      "properties": {
+        "driving_side": "left"
+      },
       "geometry": {
         "type": "Polygon",
         "coordinates": [
@@ -1339,7 +1351,9 @@
     },
     {
       "type": "Feature",
-      "properties": { "driving_side" : "left" },
+      "properties": {
+        "driving_side": "left"
+      },
       "geometry": {
         "type": "Polygon",
         "coordinates": [
@@ -1370,7 +1384,9 @@
     },
     {
       "type": "Feature",
-      "properties": { "driving_side" : "left" },
+      "properties": {
+        "driving_side": "left"
+      },
       "geometry": {
         "type": "Polygon",
         "coordinates": [
@@ -1529,7 +1545,9 @@
     },
     {
       "type": "Feature",
-      "properties": { "driving_side" : "left" },
+      "properties": {
+        "driving_side": "left"
+      },
       "geometry": {
         "type": "Polygon",
         "coordinates": [
@@ -1560,7 +1578,9 @@
     },
     {
       "type": "Feature",
-      "properties": { "driving_side" : "left" },
+      "properties": {
+        "driving_side": "left"
+      },
       "geometry": {
         "type": "Polygon",
         "coordinates": [
@@ -1591,7 +1611,9 @@
     },
     {
       "type": "Feature",
-      "properties": { "driving_side" : "left" },
+      "properties": {
+        "driving_side": "left"
+      },
       "geometry": {
         "type": "Polygon",
         "coordinates": [
@@ -1622,7 +1644,9 @@
     },
     {
       "type": "Feature",
-      "properties": { "driving_side" : "left" },
+      "properties": {
+        "driving_side": "left"
+      },
       "geometry": {
         "type": "Polygon",
         "coordinates": [
@@ -1653,7 +1677,9 @@
     },
     {
       "type": "Feature",
-      "properties": { "driving_side" : "left" },
+      "properties": {
+        "driving_side": "left"
+      },
       "geometry": {
         "type": "Polygon",
         "coordinates": [
@@ -1684,7 +1710,9 @@
     },
     {
       "type": "Feature",
-      "properties": { "driving_side" : "left" },
+      "properties": {
+        "driving_side": "left"
+      },
       "geometry": {
         "type": "Polygon",
         "coordinates": [
@@ -1715,7 +1743,9 @@
     },
     {
       "type": "Feature",
-      "properties": { "driving_side" : "left" },
+      "properties": {
+        "driving_side": "left"
+      },
       "geometry": {
         "type": "Polygon",
         "coordinates": [
@@ -1743,6 +1773,212 @@
           ]
         ]
       }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "driving_side": "left"
+      },
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [
+              113.53256464004518,
+              22.17096258989228
+            ],
+            [
+              113.53754281997682,
+              22.16047023983672
+            ],
+            [
+              113.54106187820436,
+              22.154587822430837
+            ],
+            [
+              113.54878664016725,
+              22.14703570986906
+            ],
+            [
+              113.54990243911743,
+              22.141947742446394
+            ],
+            [
+              113.54792833328247,
+              22.118731558535227
+            ],
+            [
+              113.54852914810182,
+              22.11006426296891
+            ],
+            [
+              113.56088876724245,
+              22.105531611874294
+            ],
+            [
+              113.5914444923401,
+              22.117300298747207
+            ],
+            [
+              113.60217332839966,
+              22.136303063467075
+            ],
+            [
+              113.58766794204713,
+              22.183520585503548
+            ],
+            [
+              113.57015848159791,
+              22.189083895743767
+            ],
+            [
+              113.56621026992799,
+              22.189163370008256
+            ],
+            [
+              113.56406450271608,
+              22.190514425625366
+            ],
+            [
+              113.56380701065065,
+              22.19941517306984
+            ],
+            [
+              113.56191873550418,
+              22.2050573189853
+            ],
+            [
+              113.56088876724245,
+              22.21260631441281
+            ],
+            [
+              113.55256319046022,
+              22.217294433458783
+            ],
+            [
+              113.54850769042969,
+              22.21683754739093
+            ],
+            [
+              113.5441303253174,
+              22.217056058304685
+            ],
+            [
+              113.54318618774415,
+              22.216479983343337
+            ],
+            [
+              113.5415554046631,
+              22.213242000752253
+            ],
+            [
+              113.54114770889284,
+              22.213003618712484
+            ],
+            [
+              113.53824019432068,
+              22.213659168347313
+            ],
+            [
+              113.53728532791139,
+              22.21367903343993
+            ],
+            [
+              113.53571891784668,
+              22.213559842841935
+            ],
+            [
+              113.53435635566713,
+              22.213182405280275
+            ],
+            [
+              113.53312253952026,
+              22.212367931293002
+            ],
+            [
+              113.53496789932252,
+              22.20616982803302
+            ],
+            [
+              113.53222131729127,
+              22.19401121511328
+            ],
+            [
+              113.52681398391725,
+              22.184792218694355
+            ],
+            [
+              113.53256464004518,
+              22.17096258989228
+            ]
+          ]
+        ]
+      }
+    },
+    {
+      "type": "Feature",
+      "properties": {
+        "driving_side": "left"
+      },
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [
+              114.1398811340332,
+              22.298308554808454
+            ],
+            [
+              114.1146469116211,
+              22.295926164040363
+            ],
+            [
+              114.10280227661133,
+              22.2808367460213
+            ],
+            [
+              114.1505241394043,
+              22.226342457476385
+            ],
+            [
+              114.20768737792969,
+              22.188199741518677
+            ],
+            [
+              114.26794052124023,
+              22.199325771045544
+            ],
+            [
+              114.26673889160155,
+              22.257008033931445
+            ],
+            [
+              114.24699783325194,
+              22.278295210101668
+            ],
+            [
+              114.22657012939453,
+              22.29354373265189
+            ],
+            [
+              114.20408248901367,
+              22.29973796977008
+            ],
+            [
+              114.184513092041,
+              22.290843594643704
+            ],
+            [
+              114.16563034057617,
+              22.28925525380013
+            ],
+            [
+              114.1398811340332,
+              22.298308554808454
+            ]
+          ]
+        ]
+      }
     }
   ]
 }

docs/http.md

@@ -586,7 +586,7 @@ step.
 
 - `name`: The name of the way along which travel proceeds.
 - `ref`: A reference number or code for the way. Optionally included, if ref data is available for the given way.
-- `pronunciation`: The pronunciation hint of the way name. Will be `undefined` if there is no pronunciation hit.
+- `pronunciation`: A string containing an [IPA](https://en.wikipedia.org/wiki/International_Phonetic_Alphabet) phonetic transcription indicating how to pronounce the name in the `name` property. This property is omitted if pronunciation data is unavailable for the step.
 - `destinations`: The destinations of the way. Will be `undefined` if there are no destinations.
 - `exits`: The exit numbers or names of the way. Will be `undefined` if there are no exit numbers or names.
 - `mode`: A string signifying the mode of transportation.

docs/profiles.md

@@ -6,7 +6,7 @@ OSRM supports "profiles". Profiles representing routing behavior for different t
 ## Available profiles
 Out-of-the-box OSRM comes with profiles for car, bicycle and foot. You can easily modify these or create new ones if you like.
 
-Profiles have a 'lua' extension, and are places in 'profiles' directory.
+Profiles have a 'lua' extension, and are placed in 'profiles' directory.
 
 When running OSRM preprocessing commands you specify the profile with the --profile (or the shorthand -p) option, for example:
 
@@ -17,8 +17,8 @@ It's important to understand that profiles are used when preprocessing the OSM d
 
 This means that after modifying a profile **you will need to extract, contract and reload the data again** and to see changes in the routing results. See [Processing Flow](https://github.com/Project-OSRM/osrm-backend/wiki/Processing-Flow) for more.
 
-## Profiles are written in LUA
-Profiles are not just configuration files. They are scripts written in the [LUA scripting language](http://www.lua.org). The reason for this is that OpenStreetMap data is complex, and it's not possible to simply define tag mappings. LUA scripting offers a powerful way to handle all the possible tag combinations found in OpenStreetMap nodes and ways.
+## Profiles are written in Lua
+Profiles are not just configuration files. They are scripts written in the [Lua scripting language](http://www.lua.org). The reason for this is that OpenStreetMap data is complex, and it's not possible to simply define tag mappings. Lua scripting offers a powerful way to handle all the possible tag combinations found in OpenStreetMap nodes and ways.
 
 ## Basic structure of profiles
 A profile will process every node and way in the OSM input data to determine what ways are routable in which direction, at what speed, etc.
@@ -35,40 +35,40 @@ A profile can also define various local functions it needs.
 
 Looking at [car.lua](../profiles/car.lua) as an example, at the top of the file the api version is defined and then required library files are included.
 
-Then follows the `setup` functions, which is called once when the profile is loaded. It returns a big hash table of configurations, specifying things like what speed to use for different way types. The configurations are used later in the various processing functions. Many adjustments can be done just be modifying this configuration table.
+Then follows the `setup` function, which is called once when the profile is loaded. It returns a big hash table of configurations, specifying things like what speed to use for different way types. The configurations are used later in the various processing functions. Many adjustments can be done just by modifying this configuration table.
 
-The setup function is also where you can do other setup, like loading elevation data source if you want to consider that when processing ways.
+The setup function is also where you can do other setup, like loading an elevation data source if you want to consider that when processing ways.
 
-Then comes the `process_node` and `process_way` functions, which are called for each OSM node and way when extracting OpenStreetMap data with `osrm-extract`.
+Then come the `process_node` and `process_way` functions, which are called for each OSM node and way when extracting OpenStreetMap data with `osrm-extract`.
 
 The `process_turn` function processes every possible turn in the network, and sets a penalty depending on the angle and turn of the movement.
 
 Profiles can also define a `process_segment` function to handle differences in speed along an OSM way, for example to handle elevation. As you can see, this is not currently used in the car profile.
 
-At the end of the file, a table if returned with references to the setup and processing functions the profile has defined.
+At the end of the file, a table is returned with references to the setup and processing functions the profile has defined.
 
 ## Understanding speed, weight and rate
-When computing a route from A to B there can be different measure of what is the best route. That's why there's a need for different profiles.
+When computing a route from A to B there can be different measures of what is the best route. That's why there's a need for different profiles.
 
-Because speeds very on different types of roads, the shortest and the fastest route are typically different. But there are many other possible preferences. For example a user might prefer a bicycle route that follow parks or other green areas, even though both duration and distance are a bit longer.
+Because speeds vary on different types of roads, the shortest and the fastest route are typically different. But there are many other possible preferences. For example a user might prefer a bicycle route that follow parks or other green areas, even though both duration and distance are a bit longer.
 
-To handle this, OSRM doesn't simply choose the ways with the highest speed. Instead it uses the concept of `weight` and `rate`. The rate is an abstract measure that you can assign to  ways as you like to make some ways preferable to others. Routing will prefer ways with high rate.
+To handle this, OSRM doesn't simply choose the ways with the highest speed. Instead it uses the concepts of `weight` and `rate`. The rate is an abstract measure that you can assign to ways as you like to make some ways preferable to others. Routing will prefer ways with high rate.
 
-The weight of a way normally computed as length / rate. The weight can be thought of as the resistance or cost when passing the way. Routing will prefer ways with low weight.
+The weight of a way is normally computed as length / rate. The weight can be thought of as the resistance or cost when passing the way. Routing will prefer ways with low weight.
 
-You can also set the weight of a way to a fixed value, In this case it's not calculated based on the length or rate, and the rate is ignored.
+You can also set the weight of a way to a fixed value. In this case it's not calculated based on the length or rate, and the rate is ignored.
 
-You should set the speed to you best estimate of the actual speed that will be used on a particular way. This will result in the best estimated travel times.
+You should set the speed to your best estimate of the actual speed that will be used on a particular way. This will result in the best estimated travel times.
 
-If you want to prefer certain ways due to other factors than the speed, adjust the rate accordingly. If you adjust the speed, the time time estimation will be skewed.
+If you want to prefer certain ways due to other factors than the speed, adjust the rate accordingly. If you adjust the speed, the time estimation will be skewed.
 
 If you set the same rate on all ways, the result will be shortest path routing.
 If you set rate = speed on all ways, the result will be fastest path routing.
-If you want to prioritize certain street, increase the rate on these.
+If you want to prioritize certain streets, increase the rate on these.
 
 ## Elements
 ### api_version
-A profile should set api_version at the top of your profile. This is done to ensure that older profiles are still supported when the api changes. If api_version is not defined, 0 will be assumed. The current api version is 2.
+A profile should set `api_version` at the top of your profile. This is done to ensure that older profiles are still supported when the api changes. If `api_version` is not defined, 0 will be assumed. The current api version is 2.
 
 ### Library files
 The folder [profiles/lib/](../profiles/lib/) contains LUA library files for handling many common processing tasks.
@@ -81,15 +81,15 @@ set.lua           | Defines the Set helper for handling sets of values
 sequence.lua      | Defines the Sequence helper for handling sequences of values
 access.lua        | Function for finding relevant access tags
 destination.lua   | Function for finding relevant destination tags
-destination.lua   | Function for determining maximum speed
+maxspeed.lua      | Function for determining maximum speed
 guidance.lua      | Function for processing guidance attributes
 
-They all return a table of functions when you use `require` to load them. You can either store this table and reference it's functions later, of if you need only a single you can store that directly.
+They all return a table of functions when you use `require` to load them. You can either store this table and reference its functions later, or if you need only a single function you can store that directly.
 
 ### setup()
 The `setup` function is called once when the profile is loaded and must return a table of configurations. It's also where you can do other global setup, like loading data sources that are used during processing.
 
-Note that processing of data is parallelized and several unconnected LUA interpreters will be running at the same time. The `setup` function will be called once for each. Each LUA iinterpreter will have it's own set of globals.
+Note that processing of data is parallelized and several unconnected LUA interpreters will be running at the same time. The `setup` function will be called once for each. Each LUA iinterpreter will have its own set of globals.
 
 The following global properties can be set under `properties` in the hash you return in the `setup` function:
 
@@ -109,8 +109,7 @@ The following additional global properties can be set in the hash you return in
 
 Attribute                            | Type             | Notes
 -------------------------------------|------------------|----------------------------------------------------------------------------
-excludable                           | Sequence of Sets | Determines which class-combinations are supported by the `exclude` option at query time.
-                                     |                  | E.g. `Sequence{Set{"ferry", "motorway"}, Set{"motorway"}}` will allow you to exclude ferries and motorways, or only motorways.
+excludable                           | Sequence of Sets | Determines which class-combinations are supported by the `exclude` option at query time. E.g. `Sequence{Set{"ferry", "motorway"}, Set{"motorway"}}` will allow you to exclude ferries and motorways, or only motorways.
 classes                              | Sequence         | Determines the allowed classes that can be referenced using `{forward,backward}_classes` on the way in the `process_way` function.
 restrictions                         | Sequence         | Determines which turn restrictions will be used for this profile.
 suffix_list                          | Set              | List of name suffixes needed for determining if "Highway 101 NW" the same road as "Highway 101 ES".
@@ -147,26 +146,26 @@ Importantly it will set `result.forward_mode` and `result.backward_mode` to indi
 
 It will also set a number of other attributes on `result`.
 
-Using the power of the scripting language you wouldn't typically see something as simple as a `result.forward_speed = 20` line within the `process_way` function. Instead `process_way` will examine the tag set on the way, process this information in various ways, calling other local functions and referencing the configuration in `profile`, etc, before arriving at the result.
+Using the power of the scripting language you wouldn't typically see something as simple as a `result.forward_speed = 20` line within the `process_way` function. Instead `process_way` will examine the tag set on the way, process this information in various ways, calling other local functions and referencing the configuration in `profile`, etc., before arriving at the result.
 
 The following attributes can be set on the result in `process_way`:
 
 Attribute                               | Type     | Notes
 ----------------------------------------|----------|--------------------------------------------------------------------------
 forward_speed                           | Float    | Speed on this way in km/h. Mandatory.
-backward_speed                          | Float    |  "   "
+backward_speed                          | Float    |  ""
 forward_rate                            | Float    | Routing weight, expressed as meters/*weight* (e.g. for a fastest-route weighting, you would want this to be meters/second, so set it to forward_speed/3.6)
-backward_rate                           | Float    |  "   "
+backward_rate                           | Float    |  ""
 forward_mode                            | Enum     | Mode of travel (e.g. `car`, `ferry`). Mandatory. Defined in `include/extractor/travel_mode.hpp`.
-backward_mode                           | Enum     |  "   "
+backward_mode                           | Enum     |  ""
 forward_classes                         | Table    | Mark this way as being of a specific class, e.g. `result.classes["toll"] = true`. This will be exposed in the API as `classes` on each `RouteStep`.
-backward_classes                        | Table    |  "   "
+backward_classes                        | Table    |  ""
 duration                                | Float    | Alternative setter for duration of the whole way in both directions
 weight                                  | Float    | Alternative setter for weight of the whole way in both directions
 turn_lanes_forward                      | String   | Directions for individual lanes (normalized OSM `turn:lanes` value)
-turn_lanes_backward                     | String   |  "   "
+turn_lanes_backward                     | String   |  ""
 forward_restricted                      | Boolean  | Is this a restricted access road? (e.g. private, or deliveries only; used to enable high turn penalty, so that way is only chosen for start/end of route)
-backward_restricted                     | Boolean  |  "   "
+backward_restricted                     | Boolean  |  ""
 is_startpoint                           | Boolean  | Can a journey start on this way? (e.g. ferry; if `false`, prevents snapping the start point to this way)
 roundabout                              | Boolean  | Is this part of a roundabout?
 circular                                | Boolean  | Is this part of a non-roundabout circular junction?
@@ -188,18 +187,18 @@ The `process_segment` function is called for every segment of OSM ways. A segmen
 
 On OpenStreetMap way cannot have different tags on different parts of a way. Instead you would split the way into several smaller ways. However many ways are long. For example, many ways pass hills without any change in tags.
 
-Processing each segment of an OSM way makes it possible to have different speeds on different parts of a way based on external data like data about elevation, pollution, noise or scenic value and adjust weight and duration of the segment.
+Processing each segment of an OSM way makes it possible to have different speeds on different parts of a way based on external data like data about elevation, pollution, noise or scenic value and adjust weight and duration of the segment accordingly.
 
-In the `process_segment` you don't have access to OSM tags. Instead you use the geographical location of the start and end point of the way to lookup other data source, like elevation data. See [rasterbot.lua](../profiles/rasterbot.lua) for an example.
+In the `process_segment` function you don't have access to OSM tags. Instead you use the geographical location of the start and end point of the way to look up information from another data source, like elevation data. See [rasterbot.lua](../profiles/rasterbot.lua) for an example.
 
 The following attributes can be read and set on the result in `process_segment`:
 
 Attribute          | Read/write? | Type    | Notes
 -------------------|-------------|---------|----------------------------------------
 source.lon         | Read        | Float   | Co-ordinates of segment start
-source.lat         | Read        | Float   |  "   "
+source.lat         | Read        | Float   |  ""
 target.lon         | Read        | Float   | Co-ordinates of segment end
-target.lat         | Read        | Float   |  "   "
+target.lat         | Read        | Float   |  ""
 target.distance    | Read        | Float   | Length of segment
 weight             | Read/write  | Float   | Routing weight for this segment
 duration           | Read/write  | Float   | Duration for this segment
@@ -231,7 +230,7 @@ The priority-category influences the decision which road is considered the obvio
 Forks can be emitted between roads of similar priority category only. Obvious choices follow a major priority road, if the priority difference is large.
 
 ### Using raster data
-OSRM has build-in support for loading an interpolating raster data in ASCII format. This can be used e.g. for factoring in elevation when computing routes.
+OSRM has built-in support for loading an interpolating raster data in ASCII format. This can be used e.g. for factoring in elevation when computing routes.
 
 Use `raster:load()` in your `setup` function to load data and store the source in your configuration hash:
 
@@ -284,8 +283,8 @@ See [rasterbot.lua](../profiles/rasterbot.lua) and [rasterbotinterp.lua](../prof
 ### Helper functions
 There are a few helper functions defined in the global scope that profiles can use:
 
-durationIsValid
-parseDuration
-trimLaneString
-applyAccessTokens
-canonicalizeStringList
+- `durationIsValid`
+- `parseDuration`
+- `trimLaneString`
+- `applyAccessTokens`
+- `canonicalizeStringList`

example/example.cpp

@@ -30,9 +30,17 @@ int main(int argc, const char *argv[])
 
     // Configure based on a .osrm base path, and no datasets in shared mem from osrm-datastore
     EngineConfig config;
+
     config.storage_config = {argv[1]};
     config.use_shared_memory = false;
 
+    // We support two routing speed up techniques:
+    // - Contraction Hierarchies (CH): requires extract+contract pre-processing
+    // - Multi-Level Dijkstra (MLD): requires extract+partition+customize pre-processing
+    //
+    // config.algorithm = EngineConfig::Algorithm::CH;
+    config.algorithm = EngineConfig::Algorithm::MLD;
+
     // Routing machine with several services (such as Route, Table, Nearest, Trip, Match)
     const OSRM osrm{config};
 

features/car/avoid.feature

@@ -0,0 +1,23 @@
+@routing @car @way
+Feature: Car - Avoid defined areas
+
+    Background:
+        Given the profile file "car" initialized with
+        """
+        profile.avoid = Set { 'motorway', 'motorway_link' }
+        profile.speeds = Sequence {
+            highway = {
+                motorway      = 90,
+                motorway_link = 45,
+                primary       = 50
+            }
+        }
+        """
+
+    Scenario: Car - Avoid motorways
+        Then routability should be
+            | highway        | bothw |
+            | motorway       |       |
+            | motorway_link  |       |
+            | primary        | x     |
+

features/car/conditional_restrictions.feature

@@ -884,7 +884,7 @@ Feature: Car - Turn restrictions
             | a    | c  | albic,dobe,dobe,albic,albic | depart,turn left,continue uturn,turn left,arrive |
             | a    | e  | albic,dobe,dobe             | depart,turn left,arrive                          |
 
-    @no_turning @conditionals
+    @no_turning @conditionals @restriction-way
     Scenario: Car - Conditional restriction with multiple time windows
         Given the extract extra arguments "--parse-conditional-restrictions"
         # 5pm Wed 02 May, 2017 GMT
@@ -1054,4 +1054,3 @@ Feature: Car - Turn restrictions
             | a    | f  | ab,be,ef,ef       | depart,turn right,turn left,arrive                                  | a,b,e,f     |
             | c    | d  | bc,be,de,de       | depart,turn left,turn right,arrive                                  | c,b,e,d     |
             | c    | f  | bc,be,ef,ef       | depart,turn left,turn left,arrive                                   | c,b,e,f     |
-

features/car/physical_limitation.feature

@@ -0,0 +1,45 @@
+@routing @car
+Feature: Car - Handle physical limitation
+
+    Background:
+        Given the profile "car"
+
+    Scenario: Car - Use a narrow way
+        Then routability should be
+            | highway | width  | narrow | bothw |
+            | primary |        |        | x     |
+            | primary | narrow |        | x     |
+            | primary |        | yes    | x     |
+            | primary | 1.8    |        |       |
+            | primary | 1.9    |        |       |
+            | primary | 2.0    |        | x     |
+            | primary | 2.1    |        | x     |
+            | primary | 1m     |        |       |
+            | primary | 1 m    |        |       |
+            | primary | 3 m    |        | x     |
+            | primary | 6'     |        |       |
+            | primary | 6'0"   |        |       |
+            | primary | 6'2"   |        |       |
+            | primary | 6'3"   |        | x     |
+            | primary | 7'     |        | x     |
+            | primary | 7'0"   |        | x     |
+
+    Scenario: Car - Limited by width
+        Then routability should be
+            | highway | maxwidth:physical | maxwidth | width | est_width | bothw |
+            | primary | 1                 |          |       |           |       |
+            | primary | 3                 |          |       |           | x     |
+            | primary |                   | 1        |       |           |       |
+            | primary |                   | 3        |       |           | x     |
+            | primary |                   |          | 1     |           |       |
+            | primary |                   |          | 3     |           | x     |
+            | primary |                   |          |       | 1         |       |
+            | primary |                   |          |       | 3         | x     |
+
+    Scenario: Car - Limited by height
+        Then routability should be
+            | highway | maxheight:physical | maxheight | bothw |
+            | primary | 1                  |           |       |
+            | primary | 3                  |           | x     |
+            | primary |                    | 1         |       |
+            | primary |                    | 3         | x     |

features/car/restrictions.feature

@@ -575,7 +575,7 @@ Feature: Car - Turn restrictions
             | c    | d  | bc,be,de,de       | depart,turn left,turn right,arrive                                  | c,b,e,d     |
             | c    | f  | bc,be,ef,ef       | depart,turn left,turn left,arrive                                   | c,b,e,f     |
 
-    @restriction @overlap
+    @restriction-way @overlap
     Scenario: Car - prohibit turn
         Given the node map
             """
@@ -710,7 +710,7 @@ Feature: Car - Turn restrictions
             | a    | j  | left,first,right,right |
             | f    | e  | right,third,left,left  |
 
-    @restriction
+    @restriction-way
     Scenario: Car - allow only turn
         Given the node map
             """
@@ -742,7 +742,7 @@ Feature: Car - Turn restrictions
             | c    | d  | bc,be,de,de       | depart,turn left,turn right,arrive                                  | c,b,e,d     |
             | c    | f  | bc,be,ef,ef       | depart,turn left,turn left,arrive                                   | c,b,e,f     |
 
-    @restriction
+    @restriction-way
     Scenario: Car - allow only turn
         Given the node map
             """
@@ -771,7 +771,7 @@ Feature: Car - Turn restrictions
             | from | to | route       |
             | a    | d  | ab,be,de,de |
 
-    @restriction
+    @restriction-way
     Scenario: Multi Way restriction
         Given the node map
             """
@@ -808,7 +808,7 @@ Feature: Car - Turn restrictions
             | from | to | route                  |
             | a    | h  | horiz,vert,horiz,horiz |
 
-    @restriction
+    @restriction-way
     Scenario: Multi-Way overlapping single-way
         Given the node map
             """
@@ -847,7 +847,7 @@ Feature: Car - Turn restrictions
             | h    | d  | hfb,abcd,abcd        | depart,end of road right,arrive                  | h,b,d     |
 
 
-    @restriction
+    @restriction-way
     Scenario: Car - prohibit turn, traffic lights
         Given the node map
             """
@@ -890,7 +890,7 @@ Feature: Car - Turn restrictions
             | c    | f  | bc,be,ef,ef       | depart,turn left,turn left,arrive                                   | c,b,e,f     |
 
 
-      @restriction @overlap @geometry
+      @restriction-way @overlap @geometry
       Scenario: Geometry
         Given the node map
             """
@@ -925,7 +925,7 @@ Feature: Car - Turn restrictions
             | c    | d  | bc,bge,de,de       |
             | c    | f  | bc,bge,de,de,ef,ef |
 
-      @restriction @overlap @geometry @traffic-signals
+      @restriction-way @overlap @geometry @traffic-signals
       Scenario: Geometry
         Given the node map
             """
@@ -967,7 +967,7 @@ Feature: Car - Turn restrictions
             | c    | f  | bc,bge,de,de,ef,ef |
 
       # don't crash hard on invalid restrictions
-      @restriction @invalid
+      @restriction-way @invalid
       Scenario: Geometry
         Given the node map
             """
@@ -999,7 +999,7 @@ Feature: Car - Turn restrictions
             | a    | f  | ab,be,ef,ef |
 
 
-    @restriction @overlap @geometry
+    @restriction @restriction-way @overlap @geometry
     Scenario: Duplicated restriction
         Given the node map
             """

features/car/side_bias.feature

@@ -116,3 +116,28 @@ Feature: Testbot - side bias
             | from | to | route    | driving_side      | time       |
             | d    | a  | bd,ab,ab | right,right,right | 27s +-1    |
             | d    | c  | bd,bc,bc | right,right,right | 24s +-1    |
+
+    Scenario: changing sides
+        Given the profile "car"
+
+        # Note - the boundary in null-island.geojson is at lon = 2.0,
+        # and we use the "last node of the way" as the heuristic to detect
+        # whether the way is in our out of the driving_side polygon
+        And the node locations
+            | node | lat | lon  |
+            | a    | 0   | 0.5  |
+            | b    | 0   | 1.5  |
+            | c    | 0   | 2.5  |
+            | d    | 0   | 3.5  |
+
+        And the ways
+            | nodes |
+            | ab    |
+            | bc    |
+            | cd    |
+
+        And the extract extra arguments "--location-dependent-data test/data/regions/null-island.geojson"
+        When I route I should get
+            | from | to | route       | driving_side           |
+            | d    | a  | cd,bc,ab,ab | right,right,left,left  |
+            | a    | d  | ab,bc,cd,cd | left,right,right,right |

features/guidance/dedicated-turn-roads.feature

@@ -992,7 +992,6 @@ Feature: Slipways and Dedicated Turn Lanes
             | dbef  | primary      | dbef  |        |
             | ae    | primary_link | ae    | yes    |
 
-
        When I route I should get
             | waypoints | route          | turns                    | locations |
             | s,f       | sabc,dbef,dbef | depart,turn right,arrive | s,a,f     |
@@ -1019,7 +1018,6 @@ Feature: Slipways and Dedicated Turn Lanes
             | dbcf  | primary      | dbcf |        |
             | ac    | primary_link | ae   | yes    |
 
-
        When I route I should get
             | waypoints | route         | turns                    | locations |
             | s,f       | sab,dbcf,dbcf | depart,turn right,arrive | s,a,f     |
@@ -1047,7 +1045,55 @@ Feature: Slipways and Dedicated Turn Lanes
             | ae    | primary_link | sab   | yes    |
             | cg    | primary      | cg    |        |
 
-
        When I route I should get
             | waypoints | route           | turns                    | locations |
             | s,f       | sab,dbcef,dbcef | depart,turn right,arrive | s,a,f     |
+
+
+    @sliproads
+    Scenario: Sliproad converted from a fork
+        Given the node map
+            """
+                     d
+                     .
+                     b
+              s . a '.
+                    `c
+                     .
+                     f
+            """
+
+        And the ways
+            | nodes | highway  | name | ref   | oneway |
+            | sa    | tertiary |      | D 60A | yes    |
+            | ab    | tertiary | ab   | D 60A | yes    |
+            | ac    | tertiary |      | D 60A | yes    |
+            | dbcf  | tertiary | dbcf | D 543 | yes    |
+
+       When I route I should get
+            | waypoints | route      | turns                    | locations |
+            | s,f       | ,dbcf,dbcf | depart,turn right,arrive | s,a,f     |
+
+
+    @sliproads
+    Scenario: Sliproad to a road with a reference only
+        Given the node map
+            """
+            s . a . b . d
+                 `  .
+                  ' .
+                   ..
+                    c
+                    .
+                    f
+            """
+
+        And the ways
+            | nodes | highway      | name | ref  | oneway |
+            | sabd  | primary      | road |      |        |
+            | bcf   | primary      |      | K108 |        |
+            | ac    | primary_link |      |      | yes    |
+
+       When I route I should get
+            | waypoints | route  | turns                    | locations |
+            | s,f       | road,, | depart,turn right,arrive | s,a,f     |

features/guidance/merge-segregated-roads.feature

@@ -394,12 +394,16 @@ Feature: Merge Segregated Roads
               a
               |
               b
+             / \
             c   h
             |   |
             |   |
             |   |
             |   |
+            |   |
+            |   |
             d   g
+             \ /
               e
               |
               f

features/guidance/roundabout.feature

@@ -745,12 +745,15 @@ Feature: Basic Roundabout
 
 
      Scenario: Drive through roundabout
+        Given a grid size of 5 meters
         Given the node map
            """
-              a
-            b e d  f
-              c
-            g   h
+                . a .
+              .       .
+            b     e --- d ---- f
+              .        .
+                 .c.
+               g     h
            """
 
         And the ways
@@ -760,12 +763,12 @@ Feature: Basic Roundabout
            | gch   |            | yes    |
 
         When I route I should get
-           | waypoints | bearings | route           | turns                                                      |
-           | e,f       | 90 90    | edf,edf         | depart,arrive                                              |
-           | e,h       | 90 135   | edf,gch,gch,gch | depart,roundabout-exit-2,exit roundabout straight,arrive   |
-           | g,f       | 45 90    | gch,edf,edf,edf | depart,roundabout-exit-2,exit roundabout right,arrive      |
-           | g,h       | 45 135   | gch,gch,gch     | depart,exit roundabout right,arrive                        |
-           | e,e       | 90 270   | edf,edf,edf     | depart,continue uturn,arrive                               |
+           | waypoints | bearings | route           | turns                                                        |
+           | e,f       | 90 90    | edf,edf         | depart,arrive                                                |
+           | e,h       | 90 130   | edf,gch,gch,gch | depart,roundabout-exit-2,exit roundabout straight,arrive     |
+           | g,f       | 50 90    | gch,edf,edf,edf | depart,roundabout-exit-2,exit roundabout slight right,arrive |
+           | g,h       | 50 130   | gch,gch,gch     | depart,exit roundabout right,arrive                          |
+           | e,e       | 90 270   | edf,edf,edf,edf | depart,roundabout-exit-3,exit roundabout sharp left,arrive   |
 
     Scenario: CCW and CW roundabouts with overlaps
         Given the node map

features/guidance/turn-angles.feature

@@ -961,12 +961,12 @@ Feature: Simple Turns
                                                             g
                                                           .
                                                         .
-                                                      .
-                                                    .
-                                                  f
-                            h                   .
-                               .              .
-                                  .         j
+                                                       .
+                                                     .
+                             h                     f
+                                                .
+                                 .            .
+                                   .        j
                                      .    .
                                         c
                                       . . .

features/guidance/turn.feature

@@ -1372,3 +1372,64 @@ Feature: Simple Turns
             | waypoints | route        | turns                           |
             | a,d       | ab,bcd,bcd   | depart,fork slight right,arrive |
             | a,g       | ab,befg,befg | depart,fork slight left,arrive  |
+
+    # https://www.openstreetmap.org/#map=18/52.25130/10.42545
+    Scenario: Turn for roads with no name, ref changes
+        Given the node map
+            """
+              d
+              .
+              .
+            e c . . f
+              .
+              .
+              b
+              .
+              .
+              a
+            """
+
+        And the ways
+            | nodes | highway     | ref  | name          |
+            | abc   | tertiary    | K 57 |               |
+            | cd    | tertiary    | K 56 |               |
+            | cf    | tertiary    | K 56 |               |
+            | ce    | residential |      | Heinrichshöhe |
+
+       When I route I should get
+            | waypoints | route     | turns                    |
+            | a,f       | ,,        | depart,turn right,arrive |
+
+    # https://www.openstreetmap.org/#map=18/52.24071/10.29066
+    Scenario: Turn for roads with no name, ref changes
+        Given the node map
+            """
+              x
+              .
+              .
+              d
+             . .
+            .   .
+           .     .
+     e. . t . c . p. .f
+           .     .
+            .   .
+             . .
+              b
+              .
+              .
+              a
+            """
+
+        And the ways
+            | nodes | highway     | ref  | name          | oneway |
+            | abp   | tertiary    | K 23 |               | yes    |
+            | pdx   | tertiary    | K 23 |               | yes    |
+            | xdt   | tertiary    | K 23 |               | yes    |
+            | tba   | tertiary    | K 23 |               | yes    |
+            | etcpf | primary     | B 1  |               | no     |
+
+       When I route I should get
+            | waypoints | route     | turns                                    |
+            | e,x       | ,,,       | depart,turn sharp left,turn right,arrive |
+            | f,a       | ,,        | depart,turn left,arrive                  |

features/support/data_classes.js

@@ -12,6 +12,10 @@ module.exports = {
 
     FuzzyMatch: class {
         match (got, want) {
+            // don't fail if bearings input and extected string is empty and actual result is undefined
+            if (want === '' && (got === '' || got === undefined))
+                return true;
+
             var matchPercent = want.match(/(.*)\s+~(.+)%$/),
                 matchAbs = want.match(/(.*)\s+\+\-(.+)$/),
                 matchRe = want.match(/^\/(.*)\/$/),

features/testbot/via.feature

@@ -309,7 +309,7 @@ Feature: Via points
             | waypoints | route |
             | a,b,e     |       |
 
-    @todo @3359
+     @3359
      Scenario: U-Turn In Bearings
         Given the node map
             """

include/contractor/contracted_edge_container.hpp

@@ -108,7 +108,7 @@ struct ContractedEdgeContainer
         edges.insert(edges.end(), new_edges.begin(), new_end);
         auto edges_size = edges.size();
         auto new_edges_size = std::distance(new_edges.begin(), new_end);
-        BOOST_ASSERT(edges_size >= new_edges_size);
+        BOOST_ASSERT(static_cast<int>(edges_size) >= new_edges_size);
         flags.resize(edges_size);
         std::fill(flags.begin() + edges_size - new_edges_size, flags.end(), flag);
 

include/engine/engine.hpp

@@ -53,12 +53,12 @@ template <typename Algorithm> class Engine final : public EngineInterface
 {
   public:
     explicit Engine(const EngineConfig &config)
-        : route_plugin(config.max_locations_viaroute, config.max_alternatives), //
-          table_plugin(config.max_locations_distance_table),                    //
-          nearest_plugin(config.max_results_nearest),                           //
-          trip_plugin(config.max_locations_trip),                               //
-          match_plugin(config.max_locations_map_matching),                      //
-          tile_plugin()                                                         //
+        : route_plugin(config.max_locations_viaroute, config.max_alternatives),            //
+          table_plugin(config.max_locations_distance_table),                               //
+          nearest_plugin(config.max_results_nearest),                                      //
+          trip_plugin(config.max_locations_trip),                                          //
+          match_plugin(config.max_locations_map_matching, config.max_radius_map_matching), //
+          tile_plugin()                                                                    //
 
     {
         if (config.use_shared_memory)

include/engine/engine_config.hpp

@@ -84,6 +84,7 @@ struct EngineConfig final
     int max_locations_viaroute = -1;
     int max_locations_distance_table = -1;
     int max_locations_map_matching = -1;
+    double max_radius_map_matching = -1.0;
     int max_results_nearest = -1;
     int max_alternatives = 3; // set an arbitrary upper bound; can be adjusted by user
     bool use_shared_memory = true;

include/engine/guidance/assemble_steps.hpp

@@ -312,7 +312,7 @@ inline std::vector<RouteStep> assembleSteps(const datafacade::BaseDataFacade &fa
                               leg_geometry.locations.size() - 1,
                               leg_geometry.locations.size(),
                               {intersection},
-                              facade.IsLeftHandDriving(source_node_id)});
+                              facade.IsLeftHandDriving(target_node_id)});
 
     BOOST_ASSERT(steps.front().intersections.size() == 1);
     BOOST_ASSERT(steps.front().intersections.front().bearings.size() == 1);

include/engine/plugins/match.hpp

@@ -24,8 +24,9 @@ class MatchPlugin : public BasePlugin
     using CandidateLists = routing_algorithms::CandidateLists;
     static const constexpr double RADIUS_MULTIPLIER = 3;
 
-    MatchPlugin(const int max_locations_map_matching)
-        : max_locations_map_matching(max_locations_map_matching)
+    MatchPlugin(const int max_locations_map_matching, const double max_radius_map_matching)
+        : max_locations_map_matching(max_locations_map_matching),
+          max_radius_map_matching(max_radius_map_matching)
     {
     }
 
@@ -35,6 +36,7 @@ class MatchPlugin : public BasePlugin
 
   private:
     const int max_locations_map_matching;
+    const double max_radius_map_matching;
 };
 }
 }

include/extractor/extractor.hpp

@@ -47,7 +47,6 @@ namespace extractor
 
 class ScriptingEnvironment;
 struct ProfileProperties;
-class NodeBasedGraphFactory;
 
 class Extractor
 {
@@ -102,13 +101,6 @@ class Extractor
     void WriteConditionalRestrictions(
         const std::string &path,
         std::vector<ConditionalTurnRestriction> &conditional_turn_restrictions);
-
-    // Find all "segregated" edges, e.g. edges that can be skipped in turn instructions.
-    // The main cases are:
-    // - middle edges between two osm ways in one logic road (U-turn)
-    // - staggered intersections (X-cross)
-    // - square/circle intersections
-    std::unordered_set<EdgeID> FindSegregatedNodes(NodeBasedGraphFactory &factory);
 };
 }
 }

include/extractor/geojson_debug_policies.hpp

@@ -60,7 +60,7 @@ operator()(const NodeID intersection_node,
            const boost::optional<util::json::Object> &way_style) const
 {
     // request the number of lanes. This process needs to be in sync with what happens over at
-    // intersection_generator
+    // intersection analysis
     const auto intersection_lanes =
         intersection.FindMaximum(guidance::makeExtractLanesForRoad(node_based_graph));
 

include/extractor/guidance/driveway_handler.hpp

@@ -14,10 +14,13 @@ namespace guidance
 class DrivewayHandler final : public IntersectionHandler
 {
   public:
-    DrivewayHandler(const IntersectionGenerator &intersection_generator,
-                    const util::NodeBasedDynamicGraph &node_based_graph,
+    DrivewayHandler(const util::NodeBasedDynamicGraph &node_based_graph,
                     const EdgeBasedNodeDataContainer &node_data_container,
                     const std::vector<util::Coordinate> &coordinates,
+                    const extractor::CompressedEdgeContainer &compressed_geometries,
+                    const RestrictionMap &node_restriction_map,
+                    const std::unordered_set<NodeID> &barrier_nodes,
+                    const guidance::TurnLanesIndexedArray &turn_lanes_data,
                     const util::NameTable &name_table,
                     const SuffixTable &street_name_suffix_table);
 

include/extractor/guidance/intersection.hpp

@@ -44,14 +44,6 @@ inline auto makeCompareShapeDataByBearing(const double base_bearing)
     };
 }
 
-inline auto makeCompareShapeDataAngleToBearing(const double base_bearing)
-{
-    return [base_bearing](const auto &lhs, const auto &rhs) {
-        return util::bearing::angleBetween(lhs.bearing, base_bearing) <
-               util::bearing::angleBetween(rhs.bearing, base_bearing);
-    };
-}
-
 inline auto makeCompareAngularDeviation(const double angle)
 {
     return [angle](const auto &lhs, const auto &rhs) {

include/extractor/guidance/intersection_generator.hpp

@@ -1,127 +0,0 @@
-#ifndef OSRM_EXTRACTOR_GUIDANCE_INTERSECTION_GENERATOR_HPP_
-#define OSRM_EXTRACTOR_GUIDANCE_INTERSECTION_GENERATOR_HPP_
-
-#include "extractor/compressed_edge_container.hpp"
-#include "extractor/guidance/coordinate_extractor.hpp"
-#include "extractor/guidance/intersection.hpp"
-#include "extractor/guidance/intersection_normalization_operation.hpp"
-#include "extractor/query_node.hpp"
-#include "extractor/restriction_index.hpp"
-#include "util/attributes.hpp"
-#include "util/node_based_graph.hpp"
-#include "util/typedefs.hpp"
-
-#include <unordered_set>
-#include <utility>
-#include <vector>
-
-#include <boost/optional.hpp>
-
-namespace osrm
-{
-namespace extractor
-{
-namespace guidance
-{
-
-struct IntersectionGenerationParameters
-{
-    NodeID nid;
-    EdgeID via_eid;
-};
-
-// The Intersection Generator is given a turn location and generates an intersection representation
-// from it. For this all turn possibilities are analysed.
-// We consider turn restrictions to indicate possible turns. U-turns are generated based on profile
-// decisions.
-class IntersectionGenerator
-{
-  public:
-    IntersectionGenerator(const util::NodeBasedDynamicGraph &node_based_graph,
-                          const EdgeBasedNodeDataContainer &node_data_container,
-                          const RestrictionMap &restriction_map,
-                          const std::unordered_set<NodeID> &barrier_nodes,
-                          const std::vector<util::Coordinate> &coordinates,
-                          const CompressedEdgeContainer &compressed_edge_container);
-
-    // For a source node `a` and a via edge `ab` creates an intersection at target `b`.
-    //
-    // a . . . b . .
-    //         .
-    //         .
-    //
-    IntersectionView operator()(const NodeID nid, const EdgeID via_eid) const;
-
-    /*
-     * Compute the shape of an intersection, returning a set of connected roads, without any further
-     * concern for which of the entries are actually allowed.
-     * The shape also only comes with turn bearings, not with turn angles. All turn angles will be
-     * set to zero
-     */
-    OSRM_ATTR_WARN_UNUSED
-    IntersectionShape
-    ComputeIntersectionShape(const NodeID center_node,
-                             const boost::optional<NodeID> sorting_base = boost::none,
-                             bool use_low_precision_angles = false) const;
-
-    // Graph Compression cannot compress every setting. For example any barrier/traffic light cannot
-    // be compressed. As a result, a simple road of the form `a ----- b` might end up as having an
-    // intermediate intersection, if there is a traffic light in between. If we want to look farther
-    // down a road, finding the next actual decision requires the look at multiple intersections.
-    // Here we follow the road until we either reach a dead end or find the next intersection with
-    // more than a single next road. This function skips over degree two nodes to find coorect input
-    // for GetConnectedRoads.
-    OSRM_ATTR_WARN_UNUSED
-    IntersectionGenerationParameters SkipDegreeTwoNodes(const NodeID starting_node,
-                                                        const EdgeID via_edge) const;
-
-    // Allow access to the coordinate extractor for all owners
-    const CoordinateExtractor &GetCoordinateExtractor() const;
-
-    // Check for restrictions/barriers and generate a list of valid and invalid turns present at
-    // the node reached from `from_node` via `via_eid`. The resulting candidates have to be analysed
-    // for their actual instructions later on.
-    // The switch for `use_low_precision_angles` enables a faster mode that will procude less
-    // accurate coordinates. It should be good enough to check order of turns, find straightmost
-    // turns. Even good enough to do some simple angle verifications. It is mostly available to
-    // allow for faster graph traversal in the extraction phase.
-    OSRM_ATTR_WARN_UNUSED
-    IntersectionView GetConnectedRoads(const NodeID from_node,
-                                       const EdgeID via_eid,
-                                       const bool use_low_precision_angles = false) const;
-
-    /*
-     * To be used in the road network, we need to check for valid/restricted turns. These two
-     * functions transform a basic intersection / a normalised intersection into the
-     * correct view when entering via a given edge.
-     */
-    OSRM_ATTR_WARN_UNUSED
-    IntersectionView
-    TransformIntersectionShapeIntoView(const NodeID previous_node,
-                                       const EdgeID entering_via_edge,
-                                       const IntersectionShape &intersection) const;
-    // version for normalised intersection
-    OSRM_ATTR_WARN_UNUSED
-    IntersectionView TransformIntersectionShapeIntoView(
-        const NodeID previous_node,
-        const EdgeID entering_via_edge,
-        const IntersectionShape &normalised_intersection,
-        const IntersectionShape &intersection,
-        const std::vector<IntersectionNormalizationOperation> &merging_map) const;
-
-  private:
-    const util::NodeBasedDynamicGraph &node_based_graph;
-    const EdgeBasedNodeDataContainer &node_data_container;
-    const RestrictionMap &restriction_map;
-    const std::unordered_set<NodeID> &barrier_nodes;
-    const std::vector<util::Coordinate> &coordinates;
-
-    // own state, used to find the correct coordinates along a road
-    const CoordinateExtractor coordinate_extractor;
-};
-
-} // namespace guidance
-} // namespace extractor
-} // namespace osrm
-
-#endif /* OSRM_EXTRACTOR_GUIDANCE_INTERSECTION_GENERATOR_HPP_ */

include/extractor/guidance/intersection_handler.hpp

@@ -2,8 +2,8 @@
 #define OSRM_EXTRACTOR_GUIDANCE_INTERSECTION_HANDLER_HPP_
 
 #include "extractor/guidance/intersection.hpp"
-#include "extractor/guidance/intersection_generator.hpp"
 #include "extractor/guidance/node_based_graph_walker.hpp"
+#include "extractor/intersection/intersection_analysis.hpp"
 #include "extractor/query_node.hpp"
 #include "extractor/suffix_table.hpp"
 
@@ -34,10 +34,13 @@ class IntersectionHandler
   public:
     IntersectionHandler(const util::NodeBasedDynamicGraph &node_based_graph,
                         const EdgeBasedNodeDataContainer &node_data_container,
-                        const std::vector<util::Coordinate> &coordinates,
+                        const std::vector<util::Coordinate> &node_coordinates,
+                        const extractor::CompressedEdgeContainer &compressed_geometries,
+                        const RestrictionMap &node_restriction_map,
+                        const std::unordered_set<NodeID> &barrier_nodes,
+                        const guidance::TurnLanesIndexedArray &turn_lanes_data,
                         const util::NameTable &name_table,
-                        const SuffixTable &street_name_suffix_table,
-                        const IntersectionGenerator &intersection_generator);
+                        const SuffixTable &street_name_suffix_table);
 
     virtual ~IntersectionHandler() = default;
 
@@ -52,10 +55,13 @@ class IntersectionHandler
   protected:
     const util::NodeBasedDynamicGraph &node_based_graph;
     const EdgeBasedNodeDataContainer &node_data_container;
-    const std::vector<util::Coordinate> &coordinates;
+    const std::vector<util::Coordinate> &node_coordinates;
+    const extractor::CompressedEdgeContainer &compressed_geometries;
+    const RestrictionMap &node_restriction_map;
+    const std::unordered_set<NodeID> &barrier_nodes;
+    const guidance::TurnLanesIndexedArray &turn_lanes_data;
     const util::NameTable &name_table;
     const SuffixTable &street_name_suffix_table;
-    const IntersectionGenerator &intersection_generator;
     const NodeBasedGraphWalker graph_walker; // for skipping traffic signal, distances etc.
 
     // Decide on a basic turn types
@@ -567,11 +573,19 @@ std::size_t IntersectionHandler::findObviousTurn(const EdgeID via_edge,
             // try to find whether there is a turn going to the opposite direction of our obvious
             // turn, this should be alright.
             const auto previous_intersection = [&]() -> IntersectionView {
-                const auto parameters = intersection_generator.SkipDegreeTwoNodes(
-                    node_at_intersection, intersection[0].eid);
-                if (node_based_graph.GetTarget(parameters.via_eid) == node_at_intersection)
+                const auto parameters = intersection::skipDegreeTwoNodes(
+                    node_based_graph, {node_at_intersection, intersection[0].eid});
+                if (node_based_graph.GetTarget(parameters.edge) == node_at_intersection)
                     return {};
-                return intersection_generator.GetConnectedRoads(parameters.nid, parameters.via_eid);
+
+                return intersection::getConnectedRoads<false>(node_based_graph,
+                                                              node_data_container,
+                                                              node_coordinates,
+                                                              compressed_geometries,
+                                                              node_restriction_map,
+                                                              barrier_nodes,
+                                                              turn_lanes_data,
+                                                              parameters);
             }();
 
             if (!previous_intersection.empty())

include/extractor/guidance/intersection_normalization_operation.hpp

@@ -1,25 +0,0 @@
-#ifndef OSRM_EXTRACTOR_GUIDANCE_INTERSECTION_NORMALIZATION_OPERATION_HPP_
-#define OSRM_EXTRACTOR_GUIDANCE_INTERSECTION_NORMALIZATION_OPERATION_HPP_
-
-#include "util/typedefs.hpp"
-
-namespace osrm
-{
-namespace extractor
-{
-namespace guidance
-{
-
-struct IntersectionNormalizationOperation
-{
-    // the source of the merge, not part of the intersection after the merge is performed.
-    EdgeID merged_eid;
-    // the edge that is covering the `merged_eid`
-    EdgeID into_eid;
-};
-
-} // namespace guidance
-} // namespace extractor
-} // namespace osrm
-
-#endif /*OSRM_EXTRACTOR_GUIDANCE_INTERSECTION_NORMALIZATION_OPERATION_HPP_*/

include/extractor/guidance/intersection_normalizer.hpp

@@ -1,125 +0,0 @@
-#ifndef OSRM_EXTRACTOR_GUIDANCE_INTERSECTION_NORMALIZER_HPP_
-#define OSRM_EXTRACTOR_GUIDANCE_INTERSECTION_NORMALIZER_HPP_
-
-#include "util/attributes.hpp"
-#include "util/name_table.hpp"
-#include "util/typedefs.hpp"
-
-#include "extractor/guidance/coordinate_extractor.hpp"
-#include "extractor/guidance/intersection.hpp"
-#include "extractor/guidance/intersection_generator.hpp"
-#include "extractor/guidance/intersection_normalization_operation.hpp"
-#include "extractor/guidance/mergable_road_detector.hpp"
-#include "extractor/query_node.hpp"
-#include "extractor/suffix_table.hpp"
-
-#include <utility>
-#include <vector>
-
-namespace osrm
-{
-namespace extractor
-{
-namespace guidance
-{
-
-/*
- * An intersection is a central part in computing guidance decisions. However the model in OSM and
- * the view we want to use in guidance are not necessarily the same thing. We have to account for
- * some models that are chosen explicitly in OSM and that don't actually describe how a human would
- * experience an intersection.
- *
- * For example, if a small pedestrian island is located at a traffic light right in the middle of a
- * road, OSM tends to model the road as two separate ways. A human would consider these two ways a
- * single road, though. In this normalizer, we try to account for these subtle differences between
- * OSM data and human perception to improve our decision base for guidance later on.
- */
-class IntersectionNormalizer
-{
-  public:
-    struct NormalizationResult
-    {
-        IntersectionShape normalized_shape;
-        std::vector<IntersectionNormalizationOperation> performed_merges;
-    };
-    IntersectionNormalizer(const util::NodeBasedDynamicGraph &node_based_graph,
-                           const EdgeBasedNodeDataContainer &node_data_container,
-                           const std::vector<util::Coordinate> &node_coordinates,
-                           const util::NameTable &name_table,
-                           const SuffixTable &street_name_suffix_table,
-                           const IntersectionGenerator &intersection_generator);
-
-    // The function takes an intersection an converts it to a `perceived` intersection which closer
-    // represents how a human might experience the intersection
-    OSRM_ATTR_WARN_UNUSED
-    NormalizationResult operator()(const NodeID node_at_intersection,
-                                   IntersectionShape intersection) const;
-
-  private:
-    const util::NodeBasedDynamicGraph &node_based_graph;
-    const IntersectionGenerator &intersection_generator;
-    const MergableRoadDetector mergable_road_detector;
-
-    /* check if two indices in an intersection can be seen as a single road in the perceived
-     * intersection representation. See below for an example. Utility function for
-     * MergeSegregatedRoads. It also checks for neighboring merges.
-     * This is due possible segments where multiple roads could end up being merged into one.
-     * We only support merging two roads, not three or more, though.
-     *        c                                  c
-     *       /                                  /
-     *  a - b     -> a - b - (c,d) but not a - b d   -> a,b,(cde)
-     *       \                                  \
-     *       d                                  e
-     */
-    bool CanMerge(const NodeID intersection_node,
-                  const IntersectionShape &intersection,
-                  std::size_t first_index,
-                  std::size_t second_index) const;
-
-    // Perform an Actual Merge
-    IntersectionNormalizationOperation
-    DetermineMergeDirection(const IntersectionShapeData &lhs,
-                            const IntersectionShapeData &rhs) const;
-    IntersectionShapeData MergeRoads(const IntersectionShapeData &destination,
-                                     const IntersectionShapeData &source) const;
-    IntersectionShapeData MergeRoads(const IntersectionNormalizationOperation direction,
-                                     const IntersectionShapeData &lhs,
-                                     const IntersectionShapeData &rhs,
-                                     const double opposite_bearing) const;
-
-    // Merge segregated roads to omit invalid turns in favor of treating segregated roads as
-    // one.
-    // This function combines roads the following way:
-    //
-    //     *                           *
-    //     *        is converted to    *
-    //   v   ^                         +
-    //   v   ^                         +
-    //
-    // The treatment results in a straight turn angle of 180º rather than a turn angle of approx
-    // 160
-    OSRM_ATTR_WARN_UNUSED
-    NormalizationResult MergeSegregatedRoads(const NodeID intersection_node,
-                                             IntersectionShape intersection) const;
-
-    // The counterpiece to mergeSegregatedRoads. While we can adjust roads that split up at the
-    // intersection itself, it can also happen that intersections are connected to joining roads.
-    //
-    //     *                           *
-    //     *        is converted to    *
-    //   v   a ---                     a ---
-    //   v   ^                         +
-    //   v   ^                         +
-    //       b
-    //
-    // for the local view of b at a.
-    OSRM_ATTR_WARN_UNUSED
-    IntersectionShape AdjustBearingsForMergeAtDestination(const NodeID node_at_intersection,
-                                                          IntersectionShape intersection) const;
-};
-
-} // namespace guidance
-} // namespace extractor
-} // namespace osrm
-
-#endif /* OSRM_EXTRACTOR_GUIDANCE_INTERSECTION_NORMALIZER_HPP_ */

include/extractor/guidance/mergable_road_detector.hpp

@@ -1,7 +1,11 @@
 #ifndef OSRM_EXTRACTOR_GUIDANCE_MERGEABLE_ROADS
 #define OSRM_EXTRACTOR_GUIDANCE_MERGEABLE_ROADS
 
+#include "extractor/compressed_edge_container.hpp"
+#include "extractor/guidance/coordinate_extractor.hpp"
 #include "extractor/guidance/intersection.hpp"
+#include "extractor/guidance/turn_lane_types.hpp"
+#include "extractor/restriction_index.hpp"
 #include "util/coordinate.hpp"
 #include "util/node_based_graph.hpp"
 #include "util/typedefs.hpp"
@@ -9,6 +13,7 @@
 #include <cstdint>
 #include <functional>
 #include <limits>
+#include <unordered_set>
 #include <vector>
 
 namespace osrm
@@ -39,8 +44,10 @@ class MergableRoadDetector
     MergableRoadDetector(const util::NodeBasedDynamicGraph &node_based_graph,
                          const EdgeBasedNodeDataContainer &node_data_container,
                          const std::vector<util::Coordinate> &node_coordinates,
-                         const IntersectionGenerator &intersection_generator,
-                         const CoordinateExtractor &coordinate_extractor,
+                         const extractor::CompressedEdgeContainer &compressed_geometries,
+                         const RestrictionMap &node_restriction_map,
+                         const std::unordered_set<NodeID> &barrier_nodes,
+                         const guidance::TurnLanesIndexedArray &turn_lanes_data,
                          const util::NameTable &name_table,
                          const SuffixTable &street_name_suffix_table);
 
@@ -159,15 +166,19 @@ class MergableRoadDetector
     const util::NodeBasedDynamicGraph &node_based_graph;
     const EdgeBasedNodeDataContainer &node_data_container;
     const std::vector<util::Coordinate> &node_coordinates;
-    const IntersectionGenerator &intersection_generator;
-    const CoordinateExtractor &coordinate_extractor;
+    const extractor::CompressedEdgeContainer &compressed_geometries;
+    const RestrictionMap &node_restriction_map;
+    const std::unordered_set<NodeID> &barrier_nodes;
+    const guidance::TurnLanesIndexedArray &turn_lanes_data;
 
     // name detection
     const util::NameTable &name_table;
     const SuffixTable &street_name_suffix_table;
 
+    const CoordinateExtractor coordinate_extractor;
+
     // limit for detecting circles / parallel roads
-    const static double constexpr distance_to_extract = 150;
+    const static double constexpr distance_to_extract = 120;
 };
 
 } // namespace guidance

include/extractor/guidance/motorway_handler.hpp

@@ -2,7 +2,6 @@
 #define OSRM_EXTRACTOR_GUIDANCE_MOTORWAY_HANDLER_HPP_
 
 #include "extractor/guidance/intersection.hpp"
-#include "extractor/guidance/intersection_generator.hpp"
 #include "extractor/guidance/intersection_handler.hpp"
 #include "extractor/query_node.hpp"
 
@@ -26,9 +25,12 @@ class MotorwayHandler : public IntersectionHandler
     MotorwayHandler(const util::NodeBasedDynamicGraph &node_based_graph,
                     const EdgeBasedNodeDataContainer &node_data_container,
                     const std::vector<util::Coordinate> &coordinates,
+                    const extractor::CompressedEdgeContainer &compressed_geometries,
+                    const RestrictionMap &node_restriction_map,
+                    const std::unordered_set<NodeID> &barrier_nodes,
+                    const guidance::TurnLanesIndexedArray &turn_lanes_data,
                     const util::NameTable &name_table,
-                    const SuffixTable &street_name_suffix_table,
-                    const IntersectionGenerator &intersection_generator);
+                    const SuffixTable &street_name_suffix_table);
 
     ~MotorwayHandler() override final = default;
 

include/extractor/guidance/node_based_graph_walker.hpp

@@ -2,7 +2,9 @@
 #define OSRM_EXTRACTOR_GUIDANCE_NODE_BASED_GRAPH_WALKER
 
 #include "extractor/guidance/constants.hpp"
-#include "extractor/guidance/intersection_generator.hpp"
+#include "extractor/guidance/coordinate_extractor.hpp"
+#include "extractor/guidance/turn_lane_data.hpp"
+#include "extractor/intersection/intersection_analysis.hpp"
 #include "util/coordinate.hpp"
 #include "util/coordinate_calculation.hpp"
 #include "util/node_based_graph.hpp"
@@ -29,7 +31,11 @@ class NodeBasedGraphWalker
   public:
     NodeBasedGraphWalker(const util::NodeBasedDynamicGraph &node_based_graph,
                          const EdgeBasedNodeDataContainer &node_data_container,
-                         const IntersectionGenerator &intersection_generator);
+                         const std::vector<util::Coordinate> &node_coordinates,
+                         const extractor::CompressedEdgeContainer &compressed_geometries,
+                         const RestrictionMap &node_restriction_map,
+                         const std::unordered_set<NodeID> &barrier_nodes,
+                         const guidance::TurnLanesIndexedArray &turn_lanes_data);
 
     /*
      * the returned node-id, edge-id are either the last ones used, just prior accumulator
@@ -48,7 +54,11 @@ class NodeBasedGraphWalker
   private:
     const util::NodeBasedDynamicGraph &node_based_graph;
     const EdgeBasedNodeDataContainer &node_data_container;
-    const IntersectionGenerator &intersection_generator;
+    const std::vector<util::Coordinate> &node_coordinates;
+    const extractor::CompressedEdgeContainer &compressed_geometries;
+    const RestrictionMap &node_restriction_map;
+    const std::unordered_set<NodeID> &barrier_nodes;
+    const guidance::TurnLanesIndexedArray &turn_lanes_data;
 };
 
 /*
@@ -149,7 +159,13 @@ struct SelectStraightmostRoadByNameAndOnlyChoice
 struct IntersectionFinderAccumulator
 {
     IntersectionFinderAccumulator(const std::uint8_t hop_limit,
-                                  const IntersectionGenerator &intersection_generator);
+                                  const util::NodeBasedDynamicGraph &node_based_graph,
+                                  const EdgeBasedNodeDataContainer &node_data_container,
+                                  const std::vector<util::Coordinate> &node_coordinates,
+                                  const extractor::CompressedEdgeContainer &compressed_geometries,
+                                  const RestrictionMap &node_restriction_map,
+                                  const std::unordered_set<NodeID> &barrier_nodes,
+                                  const guidance::TurnLanesIndexedArray &turn_lanes_data);
     // true if the path has traversed enough distance
     bool terminate();
 
@@ -159,13 +175,19 @@ struct IntersectionFinderAccumulator
     std::uint8_t hops;
     const std::uint8_t hop_limit;
 
-    // we need to be able to look-up the intersection
-    const IntersectionGenerator &intersection_generator;
-
     // the result we are looking for
     NodeID nid;
     EdgeID via_edge_id;
     IntersectionView intersection;
+
+  private:
+    const util::NodeBasedDynamicGraph &node_based_graph;
+    const EdgeBasedNodeDataContainer &node_data_container;
+    const std::vector<util::Coordinate> &node_coordinates;
+    const extractor::CompressedEdgeContainer &compressed_geometries;
+    const RestrictionMap &node_restriction_map;
+    const std::unordered_set<NodeID> &barrier_nodes;
+    const guidance::TurnLanesIndexedArray &turn_lanes_data;
 };
 
 template <class accumulator_type, class selector_type>
@@ -199,9 +221,15 @@ NodeBasedGraphWalker::TraverseRoad(NodeID current_node_id,
             return {};
 
         // look at the next intersection
-        const constexpr auto LOW_PRECISION = true;
-        const auto next_intersection = intersection_generator.GetConnectedRoads(
-            current_node_id, current_edge_id, LOW_PRECISION);
+        const auto next_intersection =
+            intersection::getConnectedRoads<true>(node_based_graph,
+                                                  node_data_container,
+                                                  node_coordinates,
+                                                  compressed_geometries,
+                                                  node_restriction_map,
+                                                  barrier_nodes,
+                                                  turn_lanes_data,
+                                                  {current_node_id, current_edge_id});
 
         // don't follow u-turns or go past our initial intersection
         if (next_intersection.size() <= 1)

include/extractor/guidance/roundabout_handler.hpp

@@ -4,7 +4,6 @@
 #include "extractor/compressed_edge_container.hpp"
 #include "extractor/guidance/coordinate_extractor.hpp"
 #include "extractor/guidance/intersection.hpp"
-#include "extractor/guidance/intersection_generator.hpp"
 #include "extractor/guidance/intersection_handler.hpp"
 #include "extractor/guidance/roundabout_type.hpp"
 #include "extractor/query_node.hpp"
@@ -42,10 +41,12 @@ class RoundaboutHandler : public IntersectionHandler
     RoundaboutHandler(const util::NodeBasedDynamicGraph &node_based_graph,
                       const EdgeBasedNodeDataContainer &node_data_container,
                       const std::vector<util::Coordinate> &coordinates,
-                      const CompressedEdgeContainer &compressed_edge_container,
+                      const extractor::CompressedEdgeContainer &compressed_geometries,
+                      const RestrictionMap &node_restriction_map,
+                      const std::unordered_set<NodeID> &barrier_nodes,
+                      const guidance::TurnLanesIndexedArray &turn_lanes_data,
                       const util::NameTable &name_table,
-                      const SuffixTable &street_name_suffix_table,
-                      const IntersectionGenerator &intersection_generator);
+                      const SuffixTable &street_name_suffix_table);
 
     ~RoundaboutHandler() override final = default;
 
@@ -64,10 +65,6 @@ class RoundaboutHandler : public IntersectionHandler
                                                const EdgeID via_eid,
                                                const Intersection &intersection) const;
 
-    void invalidateExitAgainstDirection(const NodeID from_nid,
-                                        const EdgeID via_eid,
-                                        Intersection &intersection) const;
-
     // decide whether we lookk at a roundabout or a rotary
     RoundaboutType getRoundaboutType(const NodeID nid) const;
 
@@ -84,7 +81,6 @@ class RoundaboutHandler : public IntersectionHandler
     bool
     qualifiesAsRoundaboutIntersection(const std::unordered_set<NodeID> &roundabout_nodes) const;
 
-    const CompressedEdgeContainer &compressed_edge_container;
     const CoordinateExtractor coordinate_extractor;
 };
 

include/extractor/guidance/segregated_intersection_classification.hpp

@@ -0,0 +1,27 @@
+#include "util/typedefs.hpp"
+
+#include <unordered_set>
+
+namespace osrm
+{
+namespace util
+{
+class NameTable;
+}
+
+namespace extractor
+{
+class NodeBasedGraphFactory;
+
+namespace guidance
+{
+// Find all "segregated" edges, e.g. edges that can be skipped in turn instructions.
+// The main cases are:
+// - middle edges between two osm ways in one logic road (U-turn)
+// - staggered intersections (X-cross)
+// - square/circle intersections
+std::unordered_set<EdgeID> findSegregatedNodes(const NodeBasedGraphFactory &factory,
+                                               const util::NameTable &names);
+}
+}
+}

include/extractor/guidance/sliproad_handler.hpp

@@ -2,7 +2,6 @@
 #define OSRM_EXTRACTOR_GUIDANCE_SLIPROAD_HANDLER_HPP_
 
 #include "extractor/guidance/intersection.hpp"
-#include "extractor/guidance/intersection_generator.hpp"
 #include "extractor/guidance/intersection_handler.hpp"
 #include "extractor/query_node.hpp"
 
@@ -24,10 +23,13 @@ namespace guidance
 class SliproadHandler final : public IntersectionHandler
 {
   public:
-    SliproadHandler(const IntersectionGenerator &intersection_generator,
-                    const util::NodeBasedDynamicGraph &node_based_graph,
+    SliproadHandler(const util::NodeBasedDynamicGraph &node_based_graph,
                     const EdgeBasedNodeDataContainer &node_data_container,
                     const std::vector<util::Coordinate> &coordinates,
+                    const extractor::CompressedEdgeContainer &compressed_geometries,
+                    const RestrictionMap &node_restriction_map,
+                    const std::unordered_set<NodeID> &barrier_nodes,
+                    const guidance::TurnLanesIndexedArray &turn_lanes_data,
                     const util::NameTable &name_table,
                     const SuffixTable &street_name_suffix_table);
 
@@ -78,6 +80,8 @@ class SliproadHandler final : public IntersectionHandler
     // The return value is guaranteed to not be larger than `threshold`.
     static double scaledThresholdByRoadClass(const double max_threshold,
                                              const RoadClassification &classification);
+
+    const CoordinateExtractor coordinate_extractor;
 };
 
 } // namespace guidance

include/extractor/guidance/statistics_handler.hpp

@@ -10,8 +10,8 @@
 #include <algorithm>
 #include <iomanip>
 #include <iterator>
+#include <map>
 #include <mutex>
-#include <unordered_map>
 
 #include <cstdint>
 
@@ -27,18 +27,24 @@ namespace guidance
 class StatisticsHandler final : public IntersectionHandler
 {
   public:
-    StatisticsHandler(const IntersectionGenerator &intersection_generator,
-                      const util::NodeBasedDynamicGraph &node_based_graph,
+    StatisticsHandler(const util::NodeBasedDynamicGraph &node_based_graph,
                       const EdgeBasedNodeDataContainer &node_data_container,
                       const std::vector<util::Coordinate> &coordinates,
+                      const extractor::CompressedEdgeContainer &compressed_geometries,
+                      const RestrictionMap &node_restriction_map,
+                      const std::unordered_set<NodeID> &barrier_nodes,
+                      const guidance::TurnLanesIndexedArray &turn_lanes_data,
                       const util::NameTable &name_table,
                       const SuffixTable &street_name_suffix_table)
         : IntersectionHandler(node_based_graph,
                               node_data_container,
                               coordinates,
+                              compressed_geometries,
+                              node_restriction_map,
+                              barrier_nodes,
+                              turn_lanes_data,
                               name_table,
-                              street_name_suffix_table,
-                              intersection_generator)
+                              street_name_suffix_table)
     {
     }
 
@@ -55,7 +61,7 @@ class StatisticsHandler final : public IntersectionHandler
 
         for (const auto &kv : type_hist)
             if (kv.second > 0)
-                util::Log() << std::fixed << std::setprecision(2)
+                util::Log() << "  " << std::fixed << std::setprecision(2)
                             << internalInstructionTypeToString(kv.first) << ": " << kv.second
                             << " (" << (kv.second / static_cast<float>(num_types) * 100.) << "%)";
 
@@ -63,7 +69,7 @@ class StatisticsHandler final : public IntersectionHandler
 
         for (const auto &kv : modifier_hist)
             if (kv.second > 0)
-                util::Log() << std::fixed << std::setprecision(2)
+                util::Log() << "  " << std::fixed << std::setprecision(2)
                             << instructionModifierToString(kv.first) << ": " << kv.second << " ("
                             << (kv.second / static_cast<float>(num_modifiers) * 100.) << "%)";
     }
@@ -84,12 +90,14 @@ class StatisticsHandler final : public IntersectionHandler
         // numbers closer to the handlers and see how often handlers ran.
         for (const auto &road : intersection)
         {
+            if (road.entry_allowed)
+            {
+                const auto type = road.instruction.type;
+                const auto modifier = road.instruction.direction_modifier;
 
-            const auto type = road.instruction.type;
-            const auto modifier = road.instruction.direction_modifier;
-
-            type_hist[type] += 1;
-            modifier_hist[modifier] += 1;
+                type_hist[type] += 1;
+                modifier_hist[modifier] += 1;
+            }
         }
 
         return intersection;
@@ -97,8 +105,8 @@ class StatisticsHandler final : public IntersectionHandler
 
   private:
     mutable std::mutex lock;
-    mutable std::unordered_map<TurnType::Enum, std::uint64_t> type_hist;
-    mutable std::unordered_map<DirectionModifier::Enum, std::uint64_t> modifier_hist;
+    mutable std::map<TurnType::Enum, std::uint64_t> type_hist;
+    mutable std::map<DirectionModifier::Enum, std::uint64_t> modifier_hist;
 };
 
 } // namespace guidance

include/extractor/guidance/suppress_mode_handler.hpp

@@ -3,7 +3,6 @@
 
 #include "extractor/guidance/constants.hpp"
 #include "extractor/guidance/intersection.hpp"
-#include "extractor/guidance/intersection_generator.hpp"
 #include "extractor/guidance/intersection_handler.hpp"
 #include "extractor/travel_mode.hpp"
 #include "util/node_based_graph.hpp"
@@ -21,10 +20,13 @@ namespace guidance
 class SuppressModeHandler final : public IntersectionHandler
 {
   public:
-    SuppressModeHandler(const IntersectionGenerator &intersection_generator,
-                        const util::NodeBasedDynamicGraph &node_based_graph,
+    SuppressModeHandler(const util::NodeBasedDynamicGraph &node_based_graph,
                         const EdgeBasedNodeDataContainer &node_data_container,
                         const std::vector<util::Coordinate> &coordinates,
+                        const extractor::CompressedEdgeContainer &compressed_geometries,
+                        const RestrictionMap &node_restriction_map,
+                        const std::unordered_set<NodeID> &barrier_nodes,
+                        const guidance::TurnLanesIndexedArray &turn_lanes_data,
                         const util::NameTable &name_table,
                         const SuffixTable &street_name_suffix_table);
 

include/extractor/guidance/turn_analysis.hpp

@@ -4,9 +4,6 @@
 #include "extractor/compressed_edge_container.hpp"
 #include "extractor/guidance/driveway_handler.hpp"
 #include "extractor/guidance/intersection.hpp"
-#include "extractor/guidance/intersection_generator.hpp"
-#include "extractor/guidance/intersection_normalization_operation.hpp"
-#include "extractor/guidance/intersection_normalizer.hpp"
 #include "extractor/guidance/motorway_handler.hpp"
 #include "extractor/guidance/roundabout_handler.hpp"
 #include "extractor/guidance/sliproad_handler.hpp"
@@ -43,10 +40,11 @@ class TurnAnalysis
   public:
     TurnAnalysis(const util::NodeBasedDynamicGraph &node_based_graph,
                  const EdgeBasedNodeDataContainer &node_data_container,
-                 const std::vector<util::Coordinate> &coordinates,
+                 const std::vector<util::Coordinate> &node_coordinates,
+                 const CompressedEdgeContainer &compressed_edge_container,
                  const RestrictionMap &restriction_map,
                  const std::unordered_set<NodeID> &barrier_nodes,
-                 const CompressedEdgeContainer &compressed_edge_container,
+                 const guidance::TurnLanesIndexedArray &turn_lanes_data,
                  const util::NameTable &name_table,
                  const SuffixTable &street_name_suffix_table);
 
@@ -56,34 +54,14 @@ class TurnAnalysis
     Intersection operator()(const NodeID node_prior_to_intersection,
                             const EdgeID entering_via_edge) const;
 
-    /*
-     * Returns a normalized intersection without any assigned turn types.
-     * This intersection can be used as input for intersection classification, turn lane assignment
-     * and similar.
-     */
-    struct ShapeResult
-    {
-        // the basic shape, containing all turns
-        IntersectionShape intersection_shape;
-        // normalized shape, merged some roads into others, adjusted bearings
-        // see intersection_normalizer for further explanations
-        IntersectionNormalizer::NormalizationResult annotated_normalized_shape;
-    };
-    OSRM_ATTR_WARN_UNUSED
-    ShapeResult ComputeIntersectionShapes(const NodeID node_at_center_of_intersection) const;
-
     // Select turn types based on the intersection shape
     OSRM_ATTR_WARN_UNUSED
     Intersection AssignTurnTypes(const NodeID from_node,
                                  const EdgeID via_eid,
                                  const IntersectionView &intersection) const;
 
-    const IntersectionGenerator &GetIntersectionGenerator() const;
-
   private:
     const util::NodeBasedDynamicGraph &node_based_graph;
-    const IntersectionGenerator intersection_generator;
-    const IntersectionNormalizer intersection_normalizer;
     const RoundaboutHandler roundabout_handler;
     const MotorwayHandler motorway_handler;
     const TurnHandler turn_handler;

include/extractor/guidance/turn_discovery.hpp

@@ -2,15 +2,27 @@
 #define OSRM_EXTRACTOR_GUIDANCE_TURN_DISCOVERY_HPP_
 
 #include "extractor/guidance/intersection.hpp"
-#include "extractor/guidance/intersection_generator.hpp"
+#include "extractor/guidance/turn_lane_data.hpp"
+#include "extractor/restriction_index.hpp"
 #include "util/typedefs.hpp"
 
+#include <unordered_set>
+
 namespace osrm
 {
+namespace util
+{
+class Coordinate;
+}
+
 namespace extractor
 {
+
+class CompressedEdgeContainer;
+
 namespace guidance
 {
+
 namespace lanes
 {
 
@@ -21,8 +33,13 @@ bool findPreviousIntersection(
     const NodeID node,
     const EdgeID via_edge,
     const Intersection &intersection,
-    const IntersectionGenerator &intersection_generator,
     const util::NodeBasedDynamicGraph &node_based_graph, // query edge data
+    const EdgeBasedNodeDataContainer &node_data_container,
+    const std::vector<util::Coordinate> &node_coordinates,
+    const extractor::CompressedEdgeContainer &compressed_geometries,
+    const RestrictionMap &node_restriction_map,
+    const std::unordered_set<NodeID> &barrier_nodes,
+    const guidance::TurnLanesIndexedArray &turn_lanes_data,
     // output parameters, will be in an arbitrary state on failure
     NodeID &result_node,
     EdgeID &result_via_edge,

include/extractor/guidance/turn_handler.hpp

@@ -2,7 +2,6 @@
 #define OSRM_EXTRACTOR_GUIDANCE_TURN_HANDLER_HPP_
 
 #include "extractor/guidance/intersection.hpp"
-#include "extractor/guidance/intersection_generator.hpp"
 #include "extractor/guidance/intersection_handler.hpp"
 #include "extractor/query_node.hpp"
 
@@ -30,9 +29,12 @@ class TurnHandler : public IntersectionHandler
     TurnHandler(const util::NodeBasedDynamicGraph &node_based_graph,
                 const EdgeBasedNodeDataContainer &node_data_container,
                 const std::vector<util::Coordinate> &coordinates,
+                const extractor::CompressedEdgeContainer &compressed_geometries,
+                const RestrictionMap &node_restriction_map,
+                const std::unordered_set<NodeID> &barrier_nodes,
+                const guidance::TurnLanesIndexedArray &turn_lanes_data,
                 const util::NameTable &name_table,
-                const SuffixTable &street_name_suffix_table,
-                const IntersectionGenerator &intersection_generator);
+                const SuffixTable &street_name_suffix_table);
 
     ~TurnHandler() override final = default;
 

include/extractor/guidance/turn_instruction.hpp

@@ -77,7 +77,11 @@ struct TurnInstruction
 
     TurnType::Enum type : 5;
     DirectionModifier::Enum direction_modifier : 3;
-    // the lane tupel that is used for the turn
+
+    bool IsUTurn() const
+    {
+        return type != TurnType::NoTurn && direction_modifier == DirectionModifier::UTurn;
+    }
 
     static TurnInstruction INVALID() { return {TurnType::Invalid, DirectionModifier::UTurn}; }
 

include/extractor/guidance/turn_lane_handler.hpp

@@ -74,6 +74,11 @@ class TurnLaneHandler
 
     TurnLaneHandler(const util::NodeBasedDynamicGraph &node_based_graph,
                     const EdgeBasedNodeDataContainer &node_data_container,
+                    const std::vector<util::Coordinate> &node_coordinates,
+                    const extractor::CompressedEdgeContainer &compressed_geometries,
+                    const RestrictionMap &node_restriction_map,
+                    const std::unordered_set<NodeID> &barrier_nodes,
+                    const guidance::TurnLanesIndexedArray &turn_lanes_data,
                     LaneDescriptionMap &lane_description_map,
                     const TurnAnalysis &turn_analysis,
                     util::guidance::LaneDataIdMap &id_map);
@@ -90,6 +95,12 @@ class TurnLaneHandler
     // lanes for a turn
     const util::NodeBasedDynamicGraph &node_based_graph;
     const EdgeBasedNodeDataContainer &node_data_container;
+    const std::vector<util::Coordinate> &node_coordinates;
+    const extractor::CompressedEdgeContainer &compressed_geometries;
+    const RestrictionMap &node_restriction_map;
+    const std::unordered_set<NodeID> &barrier_nodes;
+    const guidance::TurnLanesIndexedArray &turn_lanes_data;
+
     std::vector<std::uint32_t> turn_lane_offsets;
     std::vector<TurnLaneType::Mask> turn_lane_masks;
     LaneDescriptionMap &lane_description_map;

include/extractor/guidance/turn_lane_types.hpp

@@ -100,8 +100,10 @@ typedef util::ConcurrentIDMap<guidance::TurnLaneDescription,
                               guidance::TurnLaneDescription_hash>
     LaneDescriptionMap;
 
-inline std::tuple<std::vector<std::uint32_t>, std::vector<TurnLaneType::Mask>>
-transformTurnLaneMapIntoArrays(const LaneDescriptionMap &turn_lane_map)
+using TurnLanesIndexedArray =
+    std::tuple<std::vector<std::uint32_t>, std::vector<TurnLaneType::Mask>>;
+
+inline TurnLanesIndexedArray transformTurnLaneMapIntoArrays(const LaneDescriptionMap &turn_lane_map)
 {
     // could use some additional capacity? To avoid a copy during processing, though small data so
     // probably not that important.
@@ -111,8 +113,7 @@ transformTurnLaneMapIntoArrays(const LaneDescriptionMap &turn_lane_map)
     //
     // turn lane offsets points into the locations of the turn_lane_masks array. We use a standard
     // adjacency array like structure to store the turn lane masks.
-    std::vector<std::uint32_t> turn_lane_offsets(turn_lane_map.data.size() +
-                                                 2); // empty ID + sentinel
+    std::vector<std::uint32_t> turn_lane_offsets(turn_lane_map.data.size() + 1); // + sentinel
     for (auto entry = turn_lane_map.data.begin(); entry != turn_lane_map.data.end(); ++entry)
         turn_lane_offsets[entry->second + 1] = entry->first.size();
 
@@ -125,6 +126,7 @@ transformTurnLaneMapIntoArrays(const LaneDescriptionMap &turn_lane_map)
         std::copy(entry->first.begin(),
                   entry->first.end(),
                   turn_lane_masks.begin() + turn_lane_offsets[entry->second]);
+
     return std::make_tuple(std::move(turn_lane_offsets), std::move(turn_lane_masks));
 }
 

include/extractor/intersection/intersection_analysis.hpp

@@ -0,0 +1,87 @@
+#ifndef OSRM_EXTRACTOR_INTERSECTION_INTERSECTION_ANALYSIS_HPP
+#define OSRM_EXTRACTOR_INTERSECTION_INTERSECTION_ANALYSIS_HPP
+
+#include "extractor/compressed_edge_container.hpp"
+#include "extractor/guidance/mergable_road_detector.hpp"
+#include "extractor/guidance/turn_lane_types.hpp"
+#include "extractor/intersection/intersection_edge.hpp"
+#include "extractor/restriction_index.hpp"
+
+#include "util/coordinate.hpp"
+#include "util/node_based_graph.hpp"
+
+#include <unordered_set>
+#include <vector>
+
+namespace osrm
+{
+namespace extractor
+{
+namespace intersection
+{
+
+IntersectionEdges getIncomingEdges(const util::NodeBasedDynamicGraph &graph,
+                                   const NodeID intersection);
+
+IntersectionEdges getOutgoingEdges(const util::NodeBasedDynamicGraph &graph,
+                                   const NodeID intersection);
+
+bool isTurnAllowed(const util::NodeBasedDynamicGraph &graph,
+                   const EdgeBasedNodeDataContainer &node_data_container,
+                   const RestrictionMap &restriction_map,
+                   const std::unordered_set<NodeID> &barrier_nodes,
+                   const IntersectionEdgeGeometries &geometries,
+                   const guidance::TurnLanesIndexedArray &turn_lanes_data,
+                   const IntersectionEdge &from,
+                   const IntersectionEdge &to);
+
+double findEdgeBearing(const IntersectionEdgeGeometries &geometries, const EdgeID &edge);
+
+double findEdgeLength(const IntersectionEdgeGeometries &geometries, const EdgeID &edge);
+
+std::pair<IntersectionEdgeGeometries, std::unordered_set<EdgeID>>
+getIntersectionGeometries(const util::NodeBasedDynamicGraph &graph,
+                          const extractor::CompressedEdgeContainer &compressed_geometries,
+                          const std::vector<util::Coordinate> &node_coordinates,
+                          const guidance::MergableRoadDetector &detector,
+                          const NodeID intersection);
+
+guidance::IntersectionView
+convertToIntersectionView(const util::NodeBasedDynamicGraph &graph,
+                          const EdgeBasedNodeDataContainer &node_data_container,
+                          const RestrictionMap &restriction_map,
+                          const std::unordered_set<NodeID> &barrier_nodes,
+                          const IntersectionEdgeGeometries &edge_geometries,
+                          const guidance::TurnLanesIndexedArray &turn_lanes_data,
+                          const IntersectionEdge &incoming_edge,
+                          const IntersectionEdges &outgoing_edges,
+                          const std::unordered_set<EdgeID> &merged_edges);
+
+// Check for restrictions/barriers and generate a list of valid and invalid turns present at
+// the node reached from `incoming_edge`. The resulting candidates have to be analyzed
+// for their actual instructions later on.
+template <bool USE_CLOSE_COORDINATE>
+guidance::IntersectionView
+getConnectedRoads(const util::NodeBasedDynamicGraph &graph,
+                  const EdgeBasedNodeDataContainer &node_data_container,
+                  const std::vector<util::Coordinate> &node_coordinates,
+                  const extractor::CompressedEdgeContainer &compressed_geometries,
+                  const RestrictionMap &node_restriction_map,
+                  const std::unordered_set<NodeID> &barrier_nodes,
+                  const guidance::TurnLanesIndexedArray &turn_lanes_data,
+                  const IntersectionEdge &incoming_edge);
+
+// Graph Compression cannot compress every setting. For example any barrier/traffic light cannot
+// be compressed. As a result, a simple road of the form `a ----- b` might end up as having an
+// intermediate intersection, if there is a traffic light in between. If we want to look farther
+// down a road, finding the next actual decision requires the look at multiple intersections.
+// Here we follow the road until we either reach a dead end or find the next intersection with
+// more than a single next road. This function skips over degree two nodes to find correct input
+// for getConnectedRoads.
+IntersectionEdge skipDegreeTwoNodes(const util::NodeBasedDynamicGraph &graph,
+                                    IntersectionEdge road);
+}
+}
+}
+
+#endif

include/extractor/intersection/intersection_edge.hpp

@@ -0,0 +1,44 @@
+#ifndef OSRM_EXTRACTOR_INTERSECTION_INTERSECTION_EDGE_HPP
+#define OSRM_EXTRACTOR_INTERSECTION_INTERSECTION_EDGE_HPP
+
+#include "util/typedefs.hpp"
+
+#include <vector>
+
+namespace osrm
+{
+namespace extractor
+{
+namespace intersection
+{
+
+// IntersectionEdge is an alias for incoming and outgoing node-based graph edges of an intersection
+struct IntersectionEdge
+{
+    NodeID node;
+    EdgeID edge;
+
+    bool operator<(const IntersectionEdge &other) const
+    {
+        return std::tie(node, edge) < std::tie(other.node, other.edge);
+    }
+};
+
+using IntersectionEdges = std::vector<IntersectionEdge>;
+
+struct IntersectionEdgeGeometry
+{
+    EdgeID edge;
+    double initial_bearing;
+    double perceived_bearing;
+    double length;
+
+    bool operator<(const IntersectionEdgeGeometry &other) const { return edge < other.edge; }
+};
+
+using IntersectionEdgeGeometries = std::vector<IntersectionEdgeGeometry>;
+}
+}
+}
+
+#endif

include/extractor/node_based_graph_factory.hpp

@@ -41,9 +41,13 @@ class NodeBasedGraphFactory
                           std::vector<TurnRestriction> &turn_restrictions,
                           std::vector<ConditionalTurnRestriction> &conditional_turn_restrictions);
 
-    auto const &GetGraph() { return compressed_output_graph; }
+    auto const &GetGraph() const { return compressed_output_graph; }
     auto const &GetBarriers() const { return barriers; }
     auto const &GetTrafficSignals() const { return traffic_signals; }
+    auto const &GetCompressedEdges() const { return compressed_edge_container; }
+    auto const &GetCoordinates() const { return coordinates; }
+    auto const &GetAnnotationData() const { return annotation_data; }
+    auto const &GetOsmNodes() const { return osm_node_ids; }
     auto &GetCompressedEdges() { return compressed_edge_container; }
     auto &GetCoordinates() { return coordinates; }
     auto &GetAnnotationData() { return annotation_data; }

include/nodejs/node_osrm_support.hpp

@@ -186,6 +186,8 @@ inline engine_config_ptr argumentsToEngineConfig(const Nan::FunctionCallbackInfo
         params->Get(Nan::New("max_locations_map_matching").ToLocalChecked());
     auto max_results_nearest = params->Get(Nan::New("max_results_nearest").ToLocalChecked());
     auto max_alternatives = params->Get(Nan::New("max_alternatives").ToLocalChecked());
+    auto max_radius_map_matching =
+        params->Get(Nan::New("max_radius_map_matching").ToLocalChecked());
 
     if (!max_locations_trip->IsUndefined() && !max_locations_trip->IsNumber())
     {
@@ -233,6 +235,9 @@ inline engine_config_ptr argumentsToEngineConfig(const Nan::FunctionCallbackInfo
         engine_config->max_results_nearest = static_cast<int>(max_results_nearest->NumberValue());
     if (max_alternatives->IsNumber())
         engine_config->max_alternatives = static_cast<int>(max_alternatives->NumberValue());
+    if (max_radius_map_matching->IsNumber())
+        engine_config->max_radius_map_matching =
+            static_cast<double>(max_radius_map_matching->NumberValue());
 
     return engine_config;
 }

include/storage/shared_datatype.hpp

@@ -48,14 +48,6 @@ const constexpr char *block_id_to_name[] = {"NAME_CHAR_DATA",
                                             "HSGR_CHECKSUM",
                                             "TIMESTAMP",
                                             "FILE_INDEX_PATH",
-                                            "CH_CORE_MARKER_0",
-                                            "CH_CORE_MARKER_1",
-                                            "CH_CORE_MARKER_2",
-                                            "CH_CORE_MARKER_3",
-                                            "CH_CORE_MARKER_4",
-                                            "CH_CORE_MARKER_5",
-                                            "CH_CORE_MARKER_6",
-                                            "CH_CORE_MARKER_7",
                                             "DATASOURCES_NAMES",
                                             "PROPERTIES",
                                             "BEARING_CLASSID",
@@ -132,14 +124,6 @@ struct DataLayout
         HSGR_CHECKSUM,
         TIMESTAMP,
         FILE_INDEX_PATH,
-        CH_CORE_MARKER_0,
-        CH_CORE_MARKER_1,
-        CH_CORE_MARKER_2,
-        CH_CORE_MARKER_3,
-        CH_CORE_MARKER_4,
-        CH_CORE_MARKER_5,
-        CH_CORE_MARKER_6,
-        CH_CORE_MARKER_7,
         DATASOURCES_NAMES,
         PROPERTIES,
         BEARING_CLASSID,
@@ -200,15 +184,7 @@ struct DataLayout
 
     inline uint64_t GetBlockEntries(BlockID bid) const { return num_entries[bid]; }
 
-    inline uint64_t GetBlockSize(BlockID bid) const
-    {
-        // special bit encoding
-        if (bid >= CH_CORE_MARKER_0 && bid <= CH_CORE_MARKER_7)
-        {
-            return (num_entries[bid] / 32 + 1) * entry_size[bid];
-        }
-        return num_entries[bid] * entry_size[bid];
-    }
+    inline uint64_t GetBlockSize(BlockID bid) const { return num_entries[bid] * entry_size[bid]; }
 
     inline uint64_t GetSizeOfLayout() const
     {

include/storage/storage_config.hpp

@@ -64,7 +64,6 @@ struct StorageConfig final : IOConfig
                    {".osrm.hsgr",
                     ".osrm.nbg_nodes",
                     ".osrm.ebg_nodes",
-                    ".osrm.core",
                     ".osrm.cells",
                     ".osrm.cell_metrics",
                     ".osrm.mldgr",

include/util/bearing.hpp

@@ -144,18 +144,6 @@ inline double restrictAngleToValidRange(const double angle)
         return angle;
 }
 
-// finds the angle between two angles, based on the minum difference between the two
-inline double angleBetween(const double lhs, const double rhs)
-{
-    const auto difference = std::abs(lhs - rhs);
-    const auto is_clockwise_difference = difference <= 180;
-    const auto angle_between_candidate = .5 * (lhs + rhs);
-    if (is_clockwise_difference)
-        return angle_between_candidate;
-    else
-        return restrictAngleToValidRange(angle_between_candidate + 180);
-}
-
 } // namespace util
 } // namespace osrm
 

include/util/dynamic_graph.hpp

@@ -115,7 +115,7 @@ template <typename EdgeDataT> class DynamicGraph
 
         number_of_nodes = nodes;
         number_of_edges = static_cast<EdgeIterator>(graph.size());
-        node_array.resize(number_of_nodes + 1);
+        node_array.resize(number_of_nodes);
         EdgeIterator edge = 0;
         EdgeIterator position = 0;
         for (const auto node : irange(0u, number_of_nodes))
@@ -129,7 +129,6 @@ template <typename EdgeDataT> class DynamicGraph
             node_array[node].edges = edge - last_edge;
             position += node_array[node].edges;
         }
-        node_array.back().first_edge = position;
         edge_list.reserve(static_cast<std::size_t>(edge_list.size() * 1.1));
         edge_list.resize(position);
         edge = 0;
@@ -144,6 +143,8 @@ template <typename EdgeDataT> class DynamicGraph
                 ++edge;
             }
         }
+
+        BOOST_ASSERT(node_array.size() == number_of_nodes);
     }
 
     // Copy&move for the same data
@@ -191,6 +192,8 @@ template <typename EdgeDataT> class DynamicGraph
     // Removes all edges to and from nodes for which filter(node_id) returns false
     template <typename Pred> auto Filter(Pred filter) const &
     {
+        BOOST_ASSERT(node_array.size() == number_of_nodes);
+
         DynamicGraph other;
 
         other.number_of_nodes = number_of_nodes;
@@ -202,6 +205,8 @@ template <typename EdgeDataT> class DynamicGraph
         std::transform(
             node_array.begin(), node_array.end(), other.node_array.begin(), [&](const Node &node) {
                 const EdgeIterator first_edge = other.edge_list.size();
+
+                BOOST_ASSERT(node_id < number_of_nodes);
                 if (filter(node_id++))
                 {
                     std::copy_if(edge_list.begin() + node.first_edge,
@@ -416,7 +421,7 @@ template <typename EdgeDataT> class DynamicGraph
     void Renumber(const std::vector<NodeID> &old_to_new_node)
     {
         // permutate everything but the sentinel
-        util::inplacePermutation(node_array.begin(), std::prev(node_array.end()), old_to_new_node);
+        util::inplacePermutation(node_array.begin(), node_array.end(), old_to_new_node);
 
         // Build up edge permutation
         auto new_edge_index = 0;

include/util/guidance/name_announcements.hpp

@@ -26,7 +26,8 @@ namespace guidance
 // Name Change Logic
 // Used both during Extraction as well as during Post-Processing
 
-inline std::string longest_common_substring(const std::string &lhs, const std::string &rhs)
+inline util::StringView longest_common_substring(const util::StringView &lhs,
+                                                 const util::StringView &rhs)
 {
     if (lhs.empty() || rhs.empty())
         return "";
@@ -60,15 +61,15 @@ inline std::string longest_common_substring(const std::string &lhs, const std::s
 
 // TODO US-ASCII support only, no UTF-8 support
 // While UTF-8 might work in some cases, we do not guarantee full functionality
-inline auto decompose(const std::string &lhs, const std::string &rhs)
+template <typename StringView> inline auto decompose(const StringView &lhs, const StringView &rhs)
 {
     auto const lcs = longest_common_substring(lhs, rhs);
 
     // trim spaces, transform to lower
-    const auto trim = [](auto str) {
+    const auto trim = [](StringView view) {
         // we compare suffixes based on this value, it might break UTF chars, but as long as we are
         // consistent in handling, we do not create bad results
-        boost::to_lower(str);
+        std::string str = boost::to_lower_copy(view.to_string());
         auto front = str.find_first_not_of(" ");
 
         if (front == std::string::npos)
@@ -80,8 +81,7 @@ inline auto decompose(const std::string &lhs, const std::string &rhs)
 
     if (lcs.empty())
     {
-        std::string empty = "";
-        return std::make_tuple(trim(lhs), trim(rhs), empty, empty);
+        return std::make_tuple(trim(lhs), trim(rhs), std::string(), std::string());
     }
 
     // find the common substring in both
@@ -92,32 +92,27 @@ inline auto decompose(const std::string &lhs, const std::string &rhs)
     BOOST_ASSERT(rhs_pos + lcs.size() <= rhs.size());
 
     // prefixes
-    std::string lhs_prefix = (lhs_pos > 0) ? lhs.substr(0, lhs_pos) : "";
-    std::string rhs_prefix = (rhs_pos > 0) ? rhs.substr(0, rhs_pos) : "";
+    auto lhs_prefix = (lhs_pos > 0) ? lhs.substr(0, lhs_pos) : StringView();
+    auto rhs_prefix = (rhs_pos > 0) ? rhs.substr(0, rhs_pos) : StringView();
 
     // suffices
-    std::string lhs_suffix = lhs.substr(lhs_pos + lcs.size());
-    std::string rhs_suffix = rhs.substr(rhs_pos + lcs.size());
+    auto lhs_suffix = lhs.substr(lhs_pos + lcs.size());
+    auto rhs_suffix = rhs.substr(rhs_pos + lcs.size());
 
-    lhs_prefix = trim(std::move(lhs_prefix));
-    lhs_suffix = trim(std::move(lhs_suffix));
-    rhs_prefix = trim(std::move(rhs_prefix));
-    rhs_suffix = trim(std::move(rhs_suffix));
-
-    return std::make_tuple(lhs_prefix, lhs_suffix, rhs_prefix, rhs_suffix);
+    return std::make_tuple(trim(lhs_prefix), trim(lhs_suffix), trim(rhs_prefix), trim(rhs_suffix));
 }
 
 // Note: there is an overload without suffix checking below.
 // (that's the reason we template the suffix table here)
-template <typename SuffixTable>
-inline bool requiresNameAnnounced(const std::string &from_name,
-                                  const std::string &from_ref,
-                                  const std::string &from_pronunciation,
-                                  const std::string &from_exits,
-                                  const std::string &to_name,
-                                  const std::string &to_ref,
-                                  const std::string &to_pronunciation,
-                                  const std::string &to_exits,
+template <typename StringView, typename SuffixTable>
+inline bool requiresNameAnnounced(const StringView &from_name,
+                                  const StringView &from_ref,
+                                  const StringView &from_pronunciation,
+                                  const StringView &from_exits,
+                                  const StringView &to_name,
+                                  const StringView &to_ref,
+                                  const StringView &to_pronunciation,
+                                  const StringView &to_exits,
                                   const SuffixTable &suffix_table)
 {
     // first is empty and the second is not
@@ -134,7 +129,7 @@ inline bool requiresNameAnnounced(const std::string &from_name,
         boost::starts_with(from_name, to_name) || boost::starts_with(to_name, from_name);
 
     const auto checkForPrefixOrSuffixChange =
-        [](const std::string &first, const std::string &second, const SuffixTable &suffix_table) {
+        [](const StringView &first, const StringView &second, const SuffixTable &suffix_table) {
             std::string first_prefix, first_suffix, second_prefix, second_suffix;
             std::tie(first_prefix, first_suffix, second_prefix, second_suffix) =
                 decompose(first, second);
@@ -203,17 +198,17 @@ inline bool requiresNameAnnounced(const std::string &from_name,
     struct NopSuffixTable final
     {
         NopSuffixTable() {}
-        bool isSuffix(const std::string &) const { return false; }
+        bool isSuffix(const StringView &) const { return false; }
     } static const table;
 
-    return requiresNameAnnounced(from_name,
-                                 from_ref,
-                                 from_pronunciation,
-                                 from_exits,
-                                 to_name,
-                                 to_ref,
-                                 to_pronunciation,
-                                 to_exits,
+    return requiresNameAnnounced(util::StringView(from_name),
+                                 util::StringView(from_ref),
+                                 util::StringView(from_pronunciation),
+                                 util::StringView(from_exits),
+                                 util::StringView(to_name),
+                                 util::StringView(to_ref),
+                                 util::StringView(to_pronunciation),
+                                 util::StringView(to_exits),
                                  table);
 }
 
@@ -225,37 +220,17 @@ inline bool requiresNameAnnounced(const NameID from_name_id,
     if (from_name_id == to_name_id)
         return false;
     else
-        return requiresNameAnnounced(name_table.GetNameForID(from_name_id).to_string(),
-                                     name_table.GetRefForID(from_name_id).to_string(),
-                                     name_table.GetPronunciationForID(from_name_id).to_string(),
-                                     name_table.GetExitsForID(from_name_id).to_string(),
+        return requiresNameAnnounced(name_table.GetNameForID(from_name_id),
+                                     name_table.GetRefForID(from_name_id),
+                                     name_table.GetPronunciationForID(from_name_id),
+                                     name_table.GetExitsForID(from_name_id),
                                      //
-                                     name_table.GetNameForID(to_name_id).to_string(),
-                                     name_table.GetRefForID(to_name_id).to_string(),
-                                     name_table.GetPronunciationForID(to_name_id).to_string(),
-                                     name_table.GetExitsForID(to_name_id).to_string(),
+                                     name_table.GetNameForID(to_name_id),
+                                     name_table.GetRefForID(to_name_id),
+                                     name_table.GetPronunciationForID(to_name_id),
+                                     name_table.GetExitsForID(to_name_id),
                                      //
                                      suffix_table);
-    // FIXME: converts StringViews to strings since the name change heuristics mutates in place
-}
-
-inline bool requiresNameAnnounced(const NameID from_name_id,
-                                  const NameID to_name_id,
-                                  const util::NameTable &name_table)
-{
-    if (from_name_id == to_name_id)
-        return false;
-    else
-        return requiresNameAnnounced(name_table.GetNameForID(from_name_id).to_string(),
-                                     name_table.GetRefForID(from_name_id).to_string(),
-                                     name_table.GetPronunciationForID(from_name_id).to_string(),
-                                     name_table.GetExitsForID(from_name_id).to_string(),
-                                     //
-                                     name_table.GetNameForID(to_name_id).to_string(),
-                                     name_table.GetRefForID(to_name_id).to_string(),
-                                     name_table.GetExitsForID(to_name_id).to_string(),
-                                     name_table.GetPronunciationForID(to_name_id).to_string());
-    // FIXME: converts StringViews to strings since the name change heuristics mutates in place
 }
 
 } // namespace guidance

package.json

@@ -1,6 +1,6 @@
 {
   "name": "osrm",
-  "version": "5.14.0-latest.1",
+  "version": "5.15.0-latest.4",
   "private": false,
   "description": "The Open Source Routing Machine is a high performance routing engine written in C++14 designed to run on OpenStreetMap data.",
   "dependencies": {

profiles/car.lua

@@ -37,6 +37,10 @@ function setup()
     turn_bias                 = 1.075,
     cardinal_directions       = false,
 
+    -- Size of the vehicle, to be limited by physical restriction of the way
+    vehicle_height = 2.5, -- in metters, 2.5m is the height of van
+    vehicle_width = 1.9, -- in metters, ways with narrow tag are considered narrower than 2.2m
+
     -- a list of suffixes to suppress in name change instructions. The suffixes also include common substrings of each other
     suffix_list = {
       'N', 'NE', 'E', 'SE', 'S', 'SW', 'W', 'NW', 'North', 'South', 'West', 'East', 'Nor', 'Sou', 'We', 'Ea'
@@ -253,6 +257,8 @@ function setup()
       ["at:rural"] = 100,
       ["at:trunk"] = 100,
       ["be:motorway"] = 120,
+      ["by:urban"] = 60,
+      ["by:motorway"] = 110,
       ["ch:rural"] = 80,
       ["ch:trunk"] = 100,
       ["ch:motorway"] = 120,
@@ -276,7 +282,6 @@ function setup()
       ["ru:living_street"] = 20,
       ["ru:urban"] = 60,
       ["ru:motorway"] = 110,
-      ["ua:urban"] = 60,
       ["uk:nsl_single"] = (60*1609)/1000,
       ["uk:nsl_dual"] = (70*1609)/1000,
       ["uk:motorway"] = (70*1609)/1000,
@@ -356,6 +361,9 @@ function process_way(profile, way, result, relations)
     -- routable. this includes things like status=impassable,
     -- toll=yes and oneway=reversible
     WayHandlers.blocked_ways,
+    WayHandlers.avoid_ways,
+    WayHandlers.handle_height,
+    WayHandlers.handle_width,
 
     -- determine access status by checking our hierarchy of
     -- access tags, e.g: motorcar, motor_vehicle, vehicle

profiles/lib/measure.lua

@@ -0,0 +1,87 @@
+local Sequence = require('lib/sequence')
+
+Measure = {}
+
+-- measurements conversion constants
+local inch_to_meters = 0.0254
+local feet_to_inches = 12
+
+--- Parse string as a height in meters.
+--- according to http://wiki.openstreetmap.org/wiki/Key:maxheight
+function Measure.parse_value_meters(value)
+  local n = tonumber(value:gsub(",", "."):match("%d+%.?%d*"))
+  if n then
+    inches = value:match("'.*")
+    if inches then -- Imperial unit to metric
+      -- try to parse feets/inch
+      n = n * feet_to_inches
+      local m = tonumber(inches:match("%d+"))
+      if m then
+        n = n + m
+      end
+      n = n * inch_to_meters
+    end
+    return n
+  end
+
+  print("Can't parse value: ", value)
+end
+
+--- according to http://wiki.openstreetmap.org/wiki/Map_Features/Units#Explicit_specifications
+local tonns_parse_patterns = Sequence {
+  "%d+",
+  "%d+.%d+",
+  "%d+.%d+ ?t"
+}
+
+local kg_parse_patterns = Sequence {
+  "%d+ ?kg"
+}
+
+--- Parse weight value in kilograms
+function Measure.parse_value_kilograms(value)
+  -- try to parse kilograms
+  for i, templ in ipairs(kg_parse_patterns) do
+    m = string.match(value, templ)
+    if m then
+      return tonumber(m)
+    end
+  end
+
+  -- try to parse tonns
+  for i, templ in ipairs(tonns_parse_patterns) do
+    m = string.match(value, templ)
+    if m then
+      return tonumber(m) * 1000
+    end
+  end
+
+  --
+  print("Can't parse value: ", value)
+  return
+end
+
+--- Get maxheight of specified way in meters. If there are no
+--- max height, then return nil
+function Measure.get_max_height(raw_value)
+  if raw_value then
+    return Measure.parse_value_meters(raw_value)
+  end
+end
+
+--- Get maxwidth of specified way in meters.
+function Measure.get_max_width(raw_value)
+  if raw_value then
+    return Measure.parse_value_meters(raw_value)
+  end
+end
+
+--- Get maxweight of specified way in kilogramms
+function Measure.get_max_weight(raw_value)
+  if raw_value then
+    return Measure.parse_value_kilograms(raw_value)
+  end
+end
+
+
+return Measure;

profiles/lib/way_handlers.lua

@@ -8,6 +8,7 @@ local get_turn_lanes = require("lib/guidance").get_turn_lanes
 local set_classification = require("lib/guidance").set_classification
 local get_destination = require("lib/destination").get_destination
 local Tags = require('lib/tags')
+local Measure = require("lib/measure")
 
 WayHandlers = {}
 
@@ -429,6 +430,47 @@ function WayHandlers.parse_maxspeed(source,profile)
   return n
 end
 
+-- handle maxheight tags
+function WayHandlers.handle_height(profile,way,result,data)
+  local keys = Sequence { 'maxheight:physical', 'maxheight' }
+  local forward, backward = Tags.get_forward_backward_by_set(way,data,keys)
+  forward = Measure.get_max_height(forward)
+  backward = Measure.get_max_height(backward)
+
+  if forward and forward < profile.vehicle_height then
+    result.forward_mode = mode.inaccessible
+  end
+
+  if backward and backward < profile.vehicle_height then
+    result.backward_mode = mode.inaccessible
+  end
+end
+
+-- handle maxwidth tags
+function WayHandlers.handle_width(profile,way,result,data)
+  local keys = Sequence { 'maxwidth:physical', 'maxwidth', 'width', 'est_width' }
+  local forward, backward = Tags.get_forward_backward_by_set(way,data,keys)
+  local narrow = way:get_value_by_key('narrow')
+
+  if ((forward and forward == 'narrow') or (narrow and narrow == 'yes')) and profile.vehicle_width > 2.2 then
+    result.forward_mode = mode.inaccessible
+  elseif forward then
+    forward = Measure.get_max_width(forward)
+    if forward and forward <= profile.vehicle_width then
+      result.forward_mode = mode.inaccessible
+    end
+  end
+
+  if ((backward and backward == 'narrow') or (narrow and narrow == 'yes')) and profile.vehicle_width > 2.2 then
+    result.backward_mode = mode.inaccessible
+  elseif backward then
+    backward = Measure.get_max_width(backward)
+    if backward and backward <= profile.vehicle_width then
+      result.backward_mode = mode.inaccessible
+    end
+  end
+end
+
 -- handle oneways tags
 function WayHandlers.oneway(profile,way,result,data)
   if not profile.oneway_handling then
@@ -490,6 +532,15 @@ function WayHandlers.weights(profile,way,result,data)
   end
 end
 
+
+-- handle general avoid rules
+
+function WayHandlers.avoid_ways(profile,way,result,data)
+  if profile.avoid[data.highway] then
+    return false
+  end
+end
+
 -- handle various that can block access
 function WayHandlers.blocked_ways(profile,way,result,data)
 

scripts/gdb_printers.py

@@ -71,10 +71,10 @@ def build_pretty_printer():
     pp.add_printer('TurnLaneData', '::TurnLaneData$', TurnLaneDataPrinter)
     return pp
 
-gdb.pretty_printers = [x for x in gdb.pretty_printers if x.name != 'OSRM'] # unregister OSRM pretty printer before (re)loading
+## unregister OSRM pretty printer before (re)loading
+gdb.pretty_printers = [x for x in gdb.pretty_printers if not isinstance(x, gdb.printing.RegexpCollectionPrettyPrinter) or x.name != 'OSRM']
 gdb.printing.register_pretty_printer(gdb.current_objfile(), build_pretty_printer())
 
-
 import geojson
 import os
 import time

src/contractor/graph_contractor.cpp

@@ -384,7 +384,7 @@ void RenumberData(std::vector<RemainingNodeData> &remaining_nodes,
     // we need to make a copy here because we are going to modify it
     auto to_orig = new_to_old_node_id;
 
-    auto new_node_id = 0;
+    auto new_node_id = 0u;
 
     // All remaining nodes get the low IDs
     for (auto &remaining : remaining_nodes)

src/engine/engine_config.cpp

@@ -11,12 +11,13 @@ bool EngineConfig::IsValid() const
     // leads to an empty path
     const bool all_path_are_empty = storage_config.GetPath("").empty();
 
-    const auto unlimited_or_more_than = [](const int v, const int limit) {
+    const auto unlimited_or_more_than = [](const auto v, const auto limit) {
         return v == -1 || v > limit;
     };
 
     const bool limits_valid = unlimited_or_more_than(max_locations_distance_table, 2) &&
                               unlimited_or_more_than(max_locations_map_matching, 2) &&
+                              unlimited_or_more_than(max_radius_map_matching, 0) &&
                               unlimited_or_more_than(max_locations_trip, 2) &&
                               unlimited_or_more_than(max_locations_viaroute, 2) &&
                               unlimited_or_more_than(max_results_nearest, 0) &&

src/engine/guidance/collapse_scenario_detection.cpp

@@ -41,15 +41,14 @@ bool noIntermediaryIntersections(const RouteStep &step)
 }
 
 // Link roads, as far as we are concerned, are short unnamed segments between to named segments.
-bool isLinkroad(const RouteStep &pre_link_step,
+bool isLinkRoad(const RouteStep &pre_link_step,
                 const RouteStep &link_step,
                 const RouteStep &post_link_step)
 {
     const constexpr double MAX_LINK_ROAD_LENGTH = 2 * MAX_COLLAPSE_DISTANCE;
     const auto is_short = link_step.distance <= MAX_LINK_ROAD_LENGTH;
-    const auto unnamed = link_step.name_id == EMPTY_NAMEID;
-    const auto between_named =
-        (pre_link_step.name_id != EMPTY_NAMEID) && (post_link_step.name_id != EMPTY_NAMEID);
+    const auto unnamed = link_step.name.empty();
+    const auto between_named = !pre_link_step.name.empty() && !post_link_step.name.empty();
 
     return is_short && unnamed && between_named && noIntermediaryIntersections(link_step);
 }
@@ -196,7 +195,7 @@ bool isUTurn(const RouteStepIterator step_prior_to_intersection,
     const auto only_allowed_turn = (numberOfAllowedTurns(*step_leaving_intersection) == 1) &&
                                    noIntermediaryIntersections(*step_entering_intersection);
 
-    return collapsable || isLinkroad(*step_prior_to_intersection,
+    return collapsable || isLinkRoad(*step_prior_to_intersection,
                                      *step_entering_intersection,
                                      *step_leaving_intersection) ||
            only_allowed_turn;

src/engine/plugins/match.cpp

@@ -139,6 +139,17 @@ Status MatchPlugin::HandleRequest(const RoutingAlgorithmsInterface &algorithms,
         return Error("InvalidValue", "Invalid coordinate value.", json_result);
     }
 
+    if (max_radius_map_matching > 0 && std::any_of(parameters.radiuses.begin(),
+                                                   parameters.radiuses.end(),
+                                                   [&](const auto &radius) {
+                                                       if (!radius)
+                                                           return false;
+                                                       return *radius > max_radius_map_matching;
+                                                   }))
+    {
+        return Error("TooBig", "Radius search size is too large for map matching.", json_result);
+    }
+
     // Check for same or increasing timestamps. Impl. note: Incontrast to `sort(first,
     // last, less_equal)` checking `greater` in reverse meets irreflexive requirements.
     const auto time_increases_monotonically = std::is_sorted(

src/engine/routing_algorithms/alternative_path_mld.cpp

@@ -784,9 +784,8 @@ InternalManyRoutesResult alternativePathSearch(SearchEngineData<Algorithm> &sear
                                                                 begin(weighted_packed_paths) + 1,
                                                                 alternative_paths_last);
 
-    alternative_paths_last = filterPackedPathsByCellSharing(begin(weighted_packed_paths), //
-                                                            end(weighted_packed_paths),   //
-                                                            partition);                   //
+    alternative_paths_last = filterPackedPathsByCellSharing(
+        begin(weighted_packed_paths), alternative_paths_last, partition);
 
     BOOST_ASSERT(weighted_packed_paths.size() >= 1);
 

src/extractor/edge_based_graph_factory.cpp

@@ -7,6 +7,8 @@
 #include "extractor/scripting_environment.hpp"
 #include "extractor/suffix_table.hpp"
 
+#include "extractor/intersection/intersection_analysis.hpp"
+
 #include "extractor/serialization.hpp"
 #include "storage/io.hpp"
 
@@ -375,7 +377,9 @@ EdgeBasedGraphFactory::GenerateEdgeExpandedNodes(const WayRestrictionMap &way_re
             m_edge_based_node_container.nodes[edge_based_node_id].segregated =
                 segregated_edges.count(eid) > 0;
 
-            m_edge_based_node_weights.push_back(m_edge_based_node_weights[eid]);
+            const auto ebn_weight = m_edge_based_node_weights[nbe_to_ebn_mapping[eid]];
+            BOOST_ASSERT(ebn_weight == INVALID_EDGE_WEIGHT || ebn_weight == edge_data.weight);
+            m_edge_based_node_weights.push_back(ebn_weight);
 
             edge_based_node_id++;
             progress.PrintStatus(progress_counter++);
@@ -419,22 +423,39 @@ void EdgeBasedGraphFactory::GenerateEdgeExpandedEdges(
 
     TurnDataExternalContainer turn_data_container;
 
+    SuffixTable street_name_suffix_table(scripting_environment);
+    const auto &turn_lanes_data = transformTurnLaneMapIntoArrays(lane_description_map);
+    guidance::MergableRoadDetector mergable_road_detector(m_node_based_graph,
+                                                          m_edge_based_node_container,
+                                                          m_coordinates,
+                                                          m_compressed_edge_container,
+                                                          node_restriction_map,
+                                                          m_barrier_nodes,
+                                                          turn_lanes_data,
+                                                          name_table,
+                                                          street_name_suffix_table);
+
     // Loop over all turns and generate new set of edges.
     // Three nested loop look super-linear, but we are dealing with a (kind of)
     // linear number of turns only.
-    SuffixTable street_name_suffix_table(scripting_environment);
     guidance::TurnAnalysis turn_analysis(m_node_based_graph,
                                          m_edge_based_node_container,
                                          m_coordinates,
+                                         m_compressed_edge_container,
                                          node_restriction_map,
                                          m_barrier_nodes,
-                                         m_compressed_edge_container,
+                                         turn_lanes_data,
                                          name_table,
                                          street_name_suffix_table);
 
     util::guidance::LaneDataIdMap lane_data_map;
     guidance::lanes::TurnLaneHandler turn_lane_handler(m_node_based_graph,
                                                        m_edge_based_node_container,
+                                                       m_coordinates,
+                                                       m_compressed_edge_container,
+                                                       node_restriction_map,
+                                                       m_barrier_nodes,
+                                                       turn_lanes_data,
                                                        lane_description_map,
                                                        turn_analysis,
                                                        lane_data_map);
@@ -537,14 +558,14 @@ void EdgeBasedGraphFactory::GenerateEdgeExpandedEdges(
             // the situation of the turn
             const auto node_along_road_entering,
             const auto node_based_edge_from,
-            const auto node_at_center_of_intersection,
+            const auto intersection_node,
             const auto node_based_edge_to,
-            const auto &intersection,
+            const auto incoming_bearing,
             const auto &turn,
             const auto entry_class_id) {
 
             const auto node_restricted = isRestricted(node_along_road_entering,
-                                                      node_at_center_of_intersection,
+                                                      intersection_node,
                                                       m_node_based_graph.GetTarget(turn.eid),
                                                       conditional_restriction_map);
 
@@ -556,7 +577,7 @@ void EdgeBasedGraphFactory::GenerateEdgeExpandedEdges(
                 conditional = {{edge_based_node_from,
                                 edge_based_node_to,
                                 {static_cast<std::uint64_t>(-1),
-                                 m_coordinates[node_at_center_of_intersection],
+                                 m_coordinates[intersection_node],
                                  conditions}}};
             }
 
@@ -572,15 +593,15 @@ void EdgeBasedGraphFactory::GenerateEdgeExpandedEdges(
             TurnData turn_data = {turn.instruction,
                                   turn.lane_data_id,
                                   entry_class_id,
-                                  util::guidance::TurnBearing(intersection[0].bearing),
+                                  util::guidance::TurnBearing(incoming_bearing),
                                   util::guidance::TurnBearing(turn.bearing)};
 
             // compute weight and duration penalties
-            auto is_traffic_light = m_traffic_lights.count(node_at_center_of_intersection);
+            auto is_traffic_light = m_traffic_lights.count(intersection_node);
             ExtractionTurn extracted_turn(
                 turn.angle,
-                m_node_based_graph.GetOutDegree(node_at_center_of_intersection),
-                turn.instruction.direction_modifier == guidance::DirectionModifier::UTurn,
+                m_node_based_graph.GetOutDegree(intersection_node),
+                turn.instruction.IsUTurn(),
                 is_traffic_light,
                 edge_data1.flags.restricted,
                 edge_data2.flags.restricted,
@@ -630,8 +651,7 @@ void EdgeBasedGraphFactory::GenerateEdgeExpandedEdges(
                           : m_compressed_edge_container.GetLastEdgeSourceID(node_based_edge_from);
             const auto &to_node = m_compressed_edge_container.GetFirstEdgeTargetID(turn.eid);
 
-            lookup::TurnIndexBlock turn_index_block = {
-                from_node, node_at_center_of_intersection, to_node};
+            lookup::TurnIndexBlock turn_index_block = {from_node, intersection_node, to_node};
 
             // insert data into the designated buffer
             return std::make_pair(
@@ -653,17 +673,26 @@ void EdgeBasedGraphFactory::GenerateEdgeExpandedEdges(
                 if (buffer->nodes_processed == 0)
                     return buffer;
 
-                for (auto node_at_center_of_intersection = intersection_node_range.begin(),
+                for (auto intersection_node = intersection_node_range.begin(),
                           end = intersection_node_range.end();
-                     node_at_center_of_intersection < end;
-                     ++node_at_center_of_intersection)
+                     intersection_node < end;
+                     ++intersection_node)
                 {
-
                     // We capture the thread-local work in these objects, then flush
                     // them in a controlled manner at the end of the parallel range
+                    const auto &incoming_edges =
+                        intersection::getIncomingEdges(m_node_based_graph, intersection_node);
+                    const auto &outgoing_edges =
+                        intersection::getOutgoingEdges(m_node_based_graph, intersection_node);
 
-                    const auto shape_result =
-                        turn_analysis.ComputeIntersectionShapes(node_at_center_of_intersection);
+                    intersection::IntersectionEdgeGeometries edge_geometries;
+                    std::unordered_set<EdgeID> merged_edge_ids;
+                    std::tie(edge_geometries, merged_edge_ids) =
+                        intersection::getIntersectionGeometries(m_node_based_graph,
+                                                                m_compressed_edge_container,
+                                                                m_coordinates,
+                                                                mergable_road_detector,
+                                                                intersection_node);
 
                     // all nodes in the graph are connected in both directions. We check all
                     // outgoing nodes to find the incoming edge. This is a larger search overhead,
@@ -683,45 +712,33 @@ void EdgeBasedGraphFactory::GenerateEdgeExpandedEdges(
                     // From the flags alone, we cannot determine which nodes are connected to
                     // `b` by an outgoing edge. Therefore, we have to search all connected edges for
                     // edges entering `b`
-                    for (const EdgeID outgoing_edge :
-                         m_node_based_graph.GetAdjacentEdgeRange(node_at_center_of_intersection))
+
+                    for (const auto &incoming_edge : incoming_edges)
                     {
-                        const NodeID node_along_road_entering =
-                            m_node_based_graph.GetTarget(outgoing_edge);
-
-                        const auto incoming_edge = m_node_based_graph.FindEdge(
-                            node_along_road_entering, node_at_center_of_intersection);
-
-                        if (m_node_based_graph.GetEdgeData(incoming_edge).reversed)
-                            continue;
-
                         ++node_based_edge_counter;
 
-                        auto intersection_with_flags_and_angles =
-                            turn_analysis.GetIntersectionGenerator()
-                                .TransformIntersectionShapeIntoView(
-                                    node_along_road_entering,
-                                    incoming_edge,
-                                    shape_result.annotated_normalized_shape.normalized_shape,
-                                    shape_result.intersection_shape,
-                                    shape_result.annotated_normalized_shape.performed_merges);
+                        const auto intersection_view =
+                            convertToIntersectionView(m_node_based_graph,
+                                                      m_edge_based_node_container,
+                                                      node_restriction_map,
+                                                      m_barrier_nodes,
+                                                      edge_geometries,
+                                                      turn_lanes_data,
+                                                      incoming_edge,
+                                                      outgoing_edges,
+                                                      merged_edge_ids);
 
-                        auto intersection =
-                            turn_analysis.AssignTurnTypes(node_along_road_entering,
-                                                          incoming_edge,
-                                                          intersection_with_flags_and_angles);
-
-                        OSRM_ASSERT(intersection.valid(),
-                                    m_coordinates[node_at_center_of_intersection]);
+                        auto intersection = turn_analysis.AssignTurnTypes(
+                            incoming_edge.node, incoming_edge.edge, intersection_view);
 
+                        OSRM_ASSERT(intersection.valid(), m_coordinates[intersection_node]);
                         intersection = turn_lane_handler.assignTurnLanes(
-                            node_along_road_entering, incoming_edge, std::move(intersection));
+                            incoming_edge.node, incoming_edge.edge, std::move(intersection));
 
                         // the entry class depends on the turn, so we have to classify the
-                        // interesction for
-                        // every edge
-                        const auto turn_classification = classifyIntersection(
-                            intersection, m_coordinates[node_at_center_of_intersection]);
+                        // interesction for every edge
+                        const auto turn_classification =
+                            classifyIntersection(intersection, m_coordinates[intersection_node]);
 
                         const auto entry_class_id =
                             entry_class_hash.ConcurrentFindOrAdd(turn_classification.first);
@@ -732,19 +749,37 @@ void EdgeBasedGraphFactory::GenerateEdgeExpandedEdges(
                         // Note - this is strictly speaking not thread safe, but we know we
                         // should never be touching the same element twice, so we should
                         // be fine.
-                        bearing_class_by_node_based_node[node_at_center_of_intersection] =
-                            bearing_class_id;
+                        bearing_class_by_node_based_node[intersection_node] = bearing_class_id;
 
                         // check if we are turning off a via way
-                        const auto turning_off_via_way = way_restriction_map.IsViaWay(
-                            node_along_road_entering, node_at_center_of_intersection);
+                        const auto turning_off_via_way =
+                            way_restriction_map.IsViaWay(incoming_edge.node, intersection_node);
 
-                        for (const auto &turn : intersection)
+                        // Save reversed incoming bearing to compute turn angles
+                        const auto reversed_incoming_bearing = util::bearing::reverse(
+                            findEdgeBearing(edge_geometries, incoming_edge.edge));
+
+                        for (const auto &outgoing_edge : outgoing_edges)
                         {
-                            // only keep valid turns
-                            if (!turn.entry_allowed)
+                            if (!intersection::isTurnAllowed(m_node_based_graph,
+                                                             m_edge_based_node_container,
+                                                             node_restriction_map,
+                                                             m_barrier_nodes,
+                                                             edge_geometries,
+                                                             turn_lanes_data,
+                                                             incoming_edge,
+                                                             outgoing_edge))
                                 continue;
 
+                            const auto turn =
+                                std::find_if(intersection.begin(),
+                                             intersection.end(),
+                                             [edge = outgoing_edge.edge](const auto &road) {
+                                                 return road.eid == edge;
+                                             });
+                            OSRM_ASSERT(turn != intersection.end(),
+                                        m_coordinates[intersection_node]);
+
                             // In case a way restriction starts at a given location, add a turn onto
                             // every artificial node eminating here.
                             //
@@ -766,22 +801,22 @@ void EdgeBasedGraphFactory::GenerateEdgeExpandedEdges(
                             // duplicated node associated with the turn. (e.g. ab via bc switches bc
                             // to bc_dup)
                             auto const target_id = way_restriction_map.RemapIfRestricted(
-                                nbe_to_ebn_mapping[turn.eid],
-                                node_along_road_entering,
-                                node_at_center_of_intersection,
-                                m_node_based_graph.GetTarget(turn.eid),
+                                nbe_to_ebn_mapping[outgoing_edge.edge],
+                                incoming_edge.node,
+                                outgoing_edge.node,
+                                m_node_based_graph.GetTarget(outgoing_edge.edge),
                                 m_number_of_edge_based_nodes);
 
                             { // scope to forget edge_with_data after
                                 const auto edge_with_data_and_condition =
-                                    generate_edge(nbe_to_ebn_mapping[incoming_edge],
+                                    generate_edge(nbe_to_ebn_mapping[incoming_edge.edge],
                                                   target_id,
-                                                  node_along_road_entering,
-                                                  incoming_edge,
-                                                  node_at_center_of_intersection,
-                                                  turn.eid,
-                                                  intersection,
-                                                  turn,
+                                                  incoming_edge.node,
+                                                  incoming_edge.edge,
+                                                  outgoing_edge.node,
+                                                  outgoing_edge.edge,
+                                                  reversed_incoming_bearing,
+                                                  *turn,
                                                   entry_class_id);
 
                                 buffer->continuous_data.edges_list.push_back(
@@ -808,7 +843,7 @@ void EdgeBasedGraphFactory::GenerateEdgeExpandedEdges(
                             if (turning_off_via_way)
                             {
                                 const auto duplicated_nodes = way_restriction_map.DuplicatedNodeIDs(
-                                    node_along_road_entering, node_at_center_of_intersection);
+                                    incoming_edge.node, intersection_node);
 
                                 // next to the normal restrictions tracked in `entry_allowed`, via
                                 // ways might introduce additional restrictions. These are handled
@@ -816,12 +851,12 @@ void EdgeBasedGraphFactory::GenerateEdgeExpandedEdges(
                                 for (auto duplicated_node_id : duplicated_nodes)
                                 {
                                     const auto from_id =
-                                        m_number_of_edge_based_nodes -
-                                        way_restriction_map.NumberOfDuplicatedNodes() +
-                                        duplicated_node_id;
+                                        NodeID(m_number_of_edge_based_nodes -
+                                               way_restriction_map.NumberOfDuplicatedNodes() +
+                                               duplicated_node_id);
 
                                     auto const node_at_end_of_turn =
-                                        m_node_based_graph.GetTarget(turn.eid);
+                                        m_node_based_graph.GetTarget(outgoing_edge.edge);
 
                                     const auto is_way_restricted = way_restriction_map.IsRestricted(
                                         duplicated_node_id, node_at_end_of_turn);
@@ -836,14 +871,14 @@ void EdgeBasedGraphFactory::GenerateEdgeExpandedEdges(
 
                                         // add into delayed data
                                         auto edge_with_data_and_condition =
-                                            generate_edge(NodeID(from_id),
-                                                          nbe_to_ebn_mapping[turn.eid],
-                                                          node_along_road_entering,
-                                                          incoming_edge,
-                                                          node_at_center_of_intersection,
-                                                          turn.eid,
-                                                          intersection,
-                                                          turn,
+                                            generate_edge(from_id,
+                                                          nbe_to_ebn_mapping[outgoing_edge.edge],
+                                                          incoming_edge.node,
+                                                          incoming_edge.edge,
+                                                          outgoing_edge.node,
+                                                          outgoing_edge.edge,
+                                                          reversed_incoming_bearing,
+                                                          *turn,
                                                           entry_class_id);
 
                                         buffer->delayed_data.push_back(
@@ -860,24 +895,24 @@ void EdgeBasedGraphFactory::GenerateEdgeExpandedEdges(
                                         {
                                             // add a new conditional for the edge we just created
                                             buffer->conditionals.push_back(
-                                                {NodeID(from_id),
-                                                 nbe_to_ebn_mapping[turn.eid],
+                                                {from_id,
+                                                 nbe_to_ebn_mapping[outgoing_edge.edge],
                                                  {static_cast<std::uint64_t>(-1),
-                                                  m_coordinates[node_at_center_of_intersection],
+                                                  m_coordinates[intersection_node],
                                                   restriction.condition}});
                                         }
                                     }
                                     else
                                     {
                                         auto edge_with_data_and_condition =
-                                            generate_edge(NodeID(from_id),
-                                                          nbe_to_ebn_mapping[turn.eid],
-                                                          node_along_road_entering,
-                                                          incoming_edge,
-                                                          node_at_center_of_intersection,
-                                                          turn.eid,
-                                                          intersection,
-                                                          turn,
+                                            generate_edge(from_id,
+                                                          nbe_to_ebn_mapping[outgoing_edge.edge],
+                                                          incoming_edge.node,
+                                                          incoming_edge.edge,
+                                                          outgoing_edge.node,
+                                                          outgoing_edge.edge,
+                                                          reversed_incoming_bearing,
+                                                          *turn,
                                                           entry_class_id);
 
                                         buffer->delayed_data.push_back(

src/extractor/extractor.cpp

@@ -13,6 +13,8 @@
 #include "extractor/restriction_parser.hpp"
 #include "extractor/scripting_environment.hpp"
 
+#include "extractor/guidance/segregated_intersection_classification.hpp"
+
 #include "storage/io.hpp"
 
 #include "util/exception.hpp"
@@ -220,7 +222,8 @@ int Extractor::run(ScriptingEnvironment &scripting_environment)
     util::Log() << "Find segregated edges in node-based graph ..." << std::flush;
     TIMER_START(segregated);
 
-    auto segregated_edges = FindSegregatedNodes(node_based_graph_factory);
+    util::NameTable names(config.GetPath(".osrm.names").string());
+    auto segregated_edges = guidance::findSegregatedNodes(node_based_graph_factory, names);
 
     TIMER_STOP(segregated);
     util::Log() << "ok, after " << TIMER_SEC(segregated) << "s";
@@ -838,232 +841,5 @@ void Extractor::WriteCompressedNodeBasedGraph(const std::string &path,
     }
 }
 
-struct EdgeInfo
-{
-    NodeID node;
-
-    util::StringView name;
-
-    // 0 - outgoing (forward), 1 - incoming (reverse), 2 - both outgoing and incoming
-    int direction;
-
-    ClassData road_class;
-
-    guidance::RoadPriorityClass::Enum road_priority_class;
-
-    struct LessName
-    {
-        bool operator()(EdgeInfo const &e1, EdgeInfo const &e2) const { return e1.name < e2.name; }
-    };
-};
-
-bool IsSegregated(std::vector<EdgeInfo> v1,
-                  std::vector<EdgeInfo> v2,
-                  EdgeInfo const &current,
-                  double edgeLength)
-{
-    if (v1.size() < 2 || v2.size() < 2)
-        return false;
-
-    auto const sort_by_name_fn = [](std::vector<EdgeInfo> &v) {
-        std::sort(v.begin(), v.end(), EdgeInfo::LessName());
-    };
-
-    sort_by_name_fn(v1);
-    sort_by_name_fn(v2);
-
-    // Internal edge with the name should be connected with any other neibour edge with the same
-    // name, e.g. isolated edge with unique name is not segregated.
-    //              b - 'b' road continues here
-    //              |
-    //      - - a - |
-    //              b - segregated edge
-    //      - - a - |
-    if (!current.name.empty())
-    {
-        auto const findNameFn = [&current](std::vector<EdgeInfo> const &v) {
-            return std::binary_search(v.begin(), v.end(), current, EdgeInfo::LessName());
-        };
-
-        if (!findNameFn(v1) && !findNameFn(v2))
-            return false;
-    }
-
-    // set_intersection like routine to get equal result pairs
-    std::vector<std::pair<EdgeInfo const *, EdgeInfo const *>> commons;
-
-    auto i1 = v1.begin();
-    auto i2 = v2.begin();
-
-    while (i1 != v1.end() && i2 != v2.end())
-    {
-        if (i1->name == i2->name)
-        {
-            if (!i1->name.empty())
-                commons.push_back(std::make_pair(&(*i1), &(*i2)));
-
-            ++i1;
-            ++i2;
-        }
-        else if (i1->name < i2->name)
-            ++i1;
-        else
-            ++i2;
-    }
-
-    if (commons.size() < 2)
-        return false;
-
-    auto const check_equal_class = [](std::pair<EdgeInfo const *, EdgeInfo const *> const &e) {
-        // Or (e.first->road_class & e.second->road_class != 0)
-        return e.first->road_class == e.second->road_class;
-    };
-
-    size_t equal_class_count = 0;
-    for (auto const &e : commons)
-        if (check_equal_class(e))
-            ++equal_class_count;
-
-    if (equal_class_count < 2)
-        return false;
-
-    auto const get_length_threshold = [](EdgeInfo const *e) {
-        switch (e->road_priority_class)
-        {
-        case guidance::RoadPriorityClass::MOTORWAY:
-        case guidance::RoadPriorityClass::TRUNK:
-            return 30.0;
-        case guidance::RoadPriorityClass::PRIMARY:
-            return 20.0;
-        case guidance::RoadPriorityClass::SECONDARY:
-        case guidance::RoadPriorityClass::TERTIARY:
-            return 10.0;
-        default:
-            return 5.0;
-        }
-    };
-
-    double threshold = std::numeric_limits<double>::max();
-    for (auto const &e : commons)
-        threshold =
-            std::min(threshold, get_length_threshold(e.first) + get_length_threshold(e.second));
-
-    return edgeLength <= threshold;
-}
-
-std::unordered_set<EdgeID> Extractor::FindSegregatedNodes(NodeBasedGraphFactory &factory)
-{
-    util::NameTable names(config.GetPath(".osrm.names").string());
-
-    auto const &graph = factory.GetGraph();
-    auto const &annotation = factory.GetAnnotationData();
-
-    guidance::CoordinateExtractor coordExtractor(
-        graph, factory.GetCompressedEdges(), factory.GetCoordinates());
-
-    auto const get_edge_length = [&](NodeID from_node, EdgeID edgeID, NodeID to_node) {
-        auto const geom = coordExtractor.GetCoordinatesAlongRoad(from_node, edgeID, false, to_node);
-        double length = 0.0;
-        for (size_t i = 1; i < geom.size(); ++i)
-        {
-            length += osrm::util::coordinate_calculation::haversineDistance(geom[i - 1], geom[i]);
-        }
-        return length;
-    };
-
-    auto const get_edge_info = [&](NodeID node, auto const &edgeData) -> EdgeInfo {
-        /// @todo Make string normalization/lowercase/trim for comparison ...
-
-        auto const id = annotation[edgeData.annotation_data].name_id;
-        BOOST_ASSERT(id != INVALID_NAMEID);
-        auto const name = names.GetNameForID(id);
-
-        return {node,
-                name,
-                edgeData.reversed ? 1 : 0,
-                annotation[edgeData.annotation_data].classes,
-                edgeData.flags.road_classification.GetClass()};
-    };
-
-    auto const collect_edge_info_fn = [&](auto const &edges1, NodeID node2) {
-        std::vector<EdgeInfo> info;
-
-        for (auto const &e : edges1)
-        {
-            NodeID const target = graph.GetTarget(e);
-            if (target == node2)
-                continue;
-
-            info.push_back(get_edge_info(target, graph.GetEdgeData(e)));
-        }
-
-        if (info.empty())
-            return info;
-
-        std::sort(info.begin(), info.end(), [](EdgeInfo const &e1, EdgeInfo const &e2) {
-            return e1.node < e2.node;
-        });
-
-        // Merge equal infos with correct direction.
-        auto curr = info.begin();
-        auto next = curr;
-        while (++next != info.end())
-        {
-            if (curr->node == next->node)
-            {
-                BOOST_ASSERT(curr->name == next->name);
-                BOOST_ASSERT(curr->road_class == next->road_class);
-                BOOST_ASSERT(curr->direction != next->direction);
-                curr->direction = 2;
-            }
-            else
-                curr = next;
-        }
-
-        info.erase(
-            std::unique(info.begin(),
-                        info.end(),
-                        [](EdgeInfo const &e1, EdgeInfo const &e2) { return e1.node == e2.node; }),
-            info.end());
-
-        return info;
-    };
-
-    auto const isSegregatedFn = [&](auto const &edgeData,
-                                    auto const &edges1,
-                                    NodeID node1,
-                                    auto const &edges2,
-                                    NodeID node2,
-                                    double edgeLength) {
-        return IsSegregated(collect_edge_info_fn(edges1, node2),
-                            collect_edge_info_fn(edges2, node1),
-                            get_edge_info(node1, edgeData),
-                            edgeLength);
-    };
-
-    std::unordered_set<EdgeID> segregated_edges;
-
-    for (NodeID sourceID = 0; sourceID < graph.GetNumberOfNodes(); ++sourceID)
-    {
-        auto const sourceEdges = graph.GetAdjacentEdgeRange(sourceID);
-        for (EdgeID edgeID : sourceEdges)
-        {
-            auto const &edgeData = graph.GetEdgeData(edgeID);
-
-            if (edgeData.reversed)
-                continue;
-
-            NodeID const targetID = graph.GetTarget(edgeID);
-            auto const targetEdges = graph.GetAdjacentEdgeRange(targetID);
-
-            double const length = get_edge_length(sourceID, edgeID, targetID);
-            if (isSegregatedFn(edgeData, sourceEdges, sourceID, targetEdges, targetID, length))
-                segregated_edges.insert(edgeID);
-        }
-    }
-
-    return segregated_edges;
-}
-
 } // namespace extractor
 } // namespace osrm

src/extractor/guidance/driveway_handler.cpp

@@ -12,18 +12,24 @@ namespace extractor
 namespace guidance
 {
 
-DrivewayHandler::DrivewayHandler(const IntersectionGenerator &intersection_generator,
-                                 const util::NodeBasedDynamicGraph &node_based_graph,
+DrivewayHandler::DrivewayHandler(const util::NodeBasedDynamicGraph &node_based_graph,
                                  const EdgeBasedNodeDataContainer &node_data_container,
-                                 const std::vector<util::Coordinate> &coordinates,
+                                 const std::vector<util::Coordinate> &node_coordinates,
+                                 const extractor::CompressedEdgeContainer &compressed_geometries,
+                                 const RestrictionMap &node_restriction_map,
+                                 const std::unordered_set<NodeID> &barrier_nodes,
+                                 const guidance::TurnLanesIndexedArray &turn_lanes_data,
                                  const util::NameTable &name_table,
                                  const SuffixTable &street_name_suffix_table)
     : IntersectionHandler(node_based_graph,
                           node_data_container,
-                          coordinates,
+                          node_coordinates,
+                          compressed_geometries,
+                          node_restriction_map,
+                          barrier_nodes,
+                          turn_lanes_data,
                           name_table,
-                          street_name_suffix_table,
-                          intersection_generator)
+                          street_name_suffix_table)
 {
 }
 
@@ -64,12 +70,12 @@ operator()(const NodeID nid, const EdgeID source_edge_id, Intersection intersect
         });
 
     (void)nid;
-    OSRM_ASSERT(road != intersection.end(), coordinates[nid]);
+    OSRM_ASSERT(road != intersection.end(), node_coordinates[nid]);
 
     if (road->instruction == TurnInstruction::INVALID())
         return intersection;
 
-    OSRM_ASSERT(road->instruction.type == TurnType::Turn, coordinates[nid]);
+    OSRM_ASSERT(road->instruction.type == TurnType::Turn, node_coordinates[nid]);
 
     road->instruction.type =
         isSameName(source_edge_id, road->eid) ? TurnType::NoTurn : TurnType::NewName;

src/extractor/guidance/intersection_generator.cpp

@@ -1,488 +0,0 @@
-#include "extractor/guidance/intersection_generator.hpp"
-
-#include "extractor/geojson_debug_policies.hpp"
-
-#include "util/geojson_debug_logger.hpp"
-
-#include "util/assert.hpp"
-#include "util/bearing.hpp"
-#include "util/coordinate_calculation.hpp"
-#include "util/log.hpp"
-
-#include <algorithm>
-#include <cmath>
-#include <functional> // mem_fn
-#include <limits>
-#include <numeric>
-#include <utility>
-
-#include <boost/range/algorithm/count_if.hpp>
-
-namespace osrm
-{
-namespace extractor
-{
-namespace guidance
-{
-namespace
-{
-const constexpr bool USE_LOW_PRECISION_MODE = true;
-// the inverse of use low precision mode
-const constexpr bool USE_HIGH_PRECISION_MODE = !USE_LOW_PRECISION_MODE;
-}
-
-IntersectionGenerator::IntersectionGenerator(
-    const util::NodeBasedDynamicGraph &node_based_graph,
-    const EdgeBasedNodeDataContainer &node_data_container,
-    const RestrictionMap &restriction_map,
-    const std::unordered_set<NodeID> &barrier_nodes,
-    const std::vector<util::Coordinate> &coordinates,
-    const CompressedEdgeContainer &compressed_edge_container)
-    : node_based_graph(node_based_graph), node_data_container(node_data_container),
-      restriction_map(restriction_map), barrier_nodes(barrier_nodes), coordinates(coordinates),
-      coordinate_extractor(node_based_graph, compressed_edge_container, coordinates)
-{
-}
-
-IntersectionView IntersectionGenerator::operator()(const NodeID from_node,
-                                                   const EdgeID via_eid) const
-{
-    return GetConnectedRoads(from_node, via_eid, USE_HIGH_PRECISION_MODE);
-}
-
-IntersectionShape
-IntersectionGenerator::ComputeIntersectionShape(const NodeID node_at_center_of_intersection,
-                                                const boost::optional<NodeID> sorting_base,
-                                                const bool use_low_precision_angles) const
-{
-    const auto intersection_degree = node_based_graph.GetOutDegree(node_at_center_of_intersection);
-    const util::Coordinate turn_coordinate = coordinates[node_at_center_of_intersection];
-
-    // compute bearings in a relatively small circle to prevent wrong roads order with true bearings
-    struct RoadWithInitialBearing
-    {
-        double bearing;
-        IntersectionShapeData road;
-    };
-    std::vector<RoadWithInitialBearing> initial_roads_ordering;
-    // reserve enough items (+ the possibly missing u-turn edge)
-    initial_roads_ordering.reserve(intersection_degree);
-
-    // number of lanes at the intersection changes how far we look down the road
-    const auto edge_range = node_based_graph.GetAdjacentEdgeRange(node_at_center_of_intersection);
-    const auto max_lanes_intersection =
-        std::accumulate(edge_range.begin(),
-                        edge_range.end(),
-                        std::uint8_t{0},
-                        [this](const auto current_max, const auto current_eid) {
-                            return std::max(current_max,
-                                            node_based_graph.GetEdgeData(current_eid)
-                                                .flags.road_classification.GetNumberOfLanes());
-                        });
-
-    for (const EdgeID edge_connected_to_intersection :
-         node_based_graph.GetAdjacentEdgeRange(node_at_center_of_intersection))
-    {
-        BOOST_ASSERT(edge_connected_to_intersection != SPECIAL_EDGEID);
-        const NodeID to_node = node_based_graph.GetTarget(edge_connected_to_intersection);
-        double bearing = 0.;
-
-        auto coordinates = coordinate_extractor.GetCoordinatesAlongRoad(
-            node_at_center_of_intersection, edge_connected_to_intersection, !INVERT, to_node);
-
-        const auto close_coordinate =
-            coordinate_extractor.ExtractCoordinateAtLength(2. /*m*/, coordinates);
-        const auto initial_bearing =
-            util::coordinate_calculation::bearing(turn_coordinate, close_coordinate);
-
-        const auto segment_length = util::coordinate_calculation::getLength(
-            coordinates.begin(),
-            coordinates.end(),
-            util::coordinate_calculation::haversineDistance);
-
-        const auto extract_coordinate = [&](const NodeID from_node,
-                                            const EdgeID via_eid,
-                                            const bool traversed_in_reverse,
-                                            const NodeID to_node) {
-            return (use_low_precision_angles || intersection_degree <= 2)
-                       ? coordinate_extractor.GetCoordinateCloseToTurn(
-                             from_node, via_eid, traversed_in_reverse, to_node)
-                       : coordinate_extractor.ExtractRepresentativeCoordinate(
-                             from_node,
-                             via_eid,
-                             traversed_in_reverse,
-                             to_node,
-                             max_lanes_intersection,
-                             std::move(coordinates));
-        };
-
-        // we have to look down the road a bit to get the correct turn
-        const auto coordinate_along_edge_leaving = extract_coordinate(
-            node_at_center_of_intersection, edge_connected_to_intersection, !INVERT, to_node);
-
-        bearing =
-            util::coordinate_calculation::bearing(turn_coordinate, coordinate_along_edge_leaving);
-
-        // OSM data sometimes contains duplicated nodes with identical coordinates, or
-        // because of coordinate precision rounding, end up at the same coordinate.
-        // It's impossible to calculate a bearing between these, so we log a warning
-        // that the data should be checked.
-        // The bearing calculation should return 0 in these cases, which may not be correct,
-        // but is at least not random.
-        if (turn_coordinate == coordinate_along_edge_leaving)
-        {
-            util::Log(logDEBUG) << "Zero length segment at " << coordinate_along_edge_leaving
-                                << " could cause invalid intersection exit bearing.";
-            BOOST_ASSERT(std::abs(bearing) <= 0.1);
-        }
-
-        initial_roads_ordering.push_back(
-            {initial_bearing, {edge_connected_to_intersection, bearing, segment_length}});
-    }
-
-    if (!initial_roads_ordering.empty())
-    {
-        const auto base_initial_bearing = [&]() {
-            if (sorting_base)
-            {
-                const auto itr = std::find_if(initial_roads_ordering.begin(),
-                                              initial_roads_ordering.end(),
-                                              [&](const auto &data) {
-                                                  return node_based_graph.GetTarget(
-                                                             data.road.eid) == *sorting_base;
-                                              });
-                if (itr != initial_roads_ordering.end())
-                    return util::bearing::reverse(itr->bearing);
-            }
-            return util::bearing::reverse(initial_roads_ordering.begin()->bearing);
-        }();
-
-        // sort roads with respect to the initial bearings, a tie-breaker for equal initial bearings
-        // is to order roads via final bearings to have roads in clockwise order
-        //
-        //  rhs   <---.                        lhs   <----.
-        //           /                                   /
-        //    lhs   /                             rhs   /
-        //
-        //  lhs road is before rhs one         rhs road is before lhs one
-        //  bearing::angleBetween < 180        bearing::angleBetween > 180
-        const auto initial_bearing_order = makeCompareShapeDataAngleToBearing(base_initial_bearing);
-        std::sort(initial_roads_ordering.begin(),
-                  initial_roads_ordering.end(),
-                  [&initial_bearing_order](const auto &lhs, const auto &rhs) {
-                      return initial_bearing_order(lhs, rhs) ||
-                             (lhs.bearing == rhs.bearing &&
-                              util::bearing::angleBetween(lhs.road.bearing, rhs.road.bearing) <
-                                  180);
-                  });
-
-        // copy intersection data in the initial order
-        IntersectionShape intersection;
-        intersection.reserve(initial_roads_ordering.size());
-        std::transform(initial_roads_ordering.begin(),
-                       initial_roads_ordering.end(),
-                       std::back_inserter(intersection),
-                       [](const auto &entry) { return entry.road; });
-
-        if (intersection.size() > 2)
-        { // Check bearings ordering with respect to true bearings
-            const auto base_bearing = intersection.front().bearing;
-            const auto bearings_order =
-                makeCompareShapeDataAngleToBearing(util::bearing::reverse(base_bearing));
-            for (auto curr = intersection.begin(), next = std::next(curr);
-                 next != intersection.end();
-                 ++curr, ++next)
-            {
-                if (bearings_order(*next, *curr))
-                { // If the true bearing is out of the initial order (next before current) then
-                    // adjust the next bearing to keep the order. The adjustment angle is at most
-                    // 0.5° or a half-angle between the current bearing and the base bearing.
-                    // to prevent overlapping over base bearing + 360°.
-                    const auto angle_adjustment = std::min(
-                        .5, util::restrictAngleToValidRange(base_bearing - curr->bearing) / 2.);
-                    next->bearing =
-                        util::restrictAngleToValidRange(curr->bearing + angle_adjustment);
-                }
-            }
-        }
-        return intersection;
-    }
-
-    return IntersectionShape{};
-}
-
-//                                               a
-//                                               |
-//                                               |
-//                                               v
-// For an intersection from_node --via_eid--> turn_node ----> c
-//                                               ^
-//                                               |
-//                                               |
-//                                               b
-// This functions returns _all_ turns as if the graph was undirected.
-// That means we not only get (from_node, turn_node, c) in the above example
-// but also (from_node, turn_node, a), (from_node, turn_node, b). These turns are
-// marked as invalid and only needed for intersection classification.
-IntersectionView IntersectionGenerator::GetConnectedRoads(const NodeID from_node,
-                                                          const EdgeID via_eid,
-                                                          const bool use_low_precision_angles) const
-{
-    // make sure the via-eid is valid
-    BOOST_ASSERT([this](const NodeID from_node, const EdgeID via_eid) {
-        const auto range = node_based_graph.GetAdjacentEdgeRange(from_node);
-        return range.front() <= via_eid && via_eid <= range.back();
-    }(from_node, via_eid));
-
-    auto intersection = ComputeIntersectionShape(
-        node_based_graph.GetTarget(via_eid), boost::none, use_low_precision_angles);
-    return TransformIntersectionShapeIntoView(from_node, via_eid, std::move(intersection));
-}
-
-IntersectionGenerationParameters
-IntersectionGenerator::SkipDegreeTwoNodes(const NodeID starting_node, const EdgeID via_edge) const
-{
-    NodeID query_node = starting_node;
-    EdgeID query_edge = via_edge;
-
-    const auto get_next_edge = [this](const NodeID from, const EdgeID via) {
-        const NodeID new_node = node_based_graph.GetTarget(via);
-        BOOST_ASSERT(node_based_graph.GetOutDegree(new_node) == 2);
-        const EdgeID begin_edges_new_node = node_based_graph.BeginEdges(new_node);
-        return (node_based_graph.GetTarget(begin_edges_new_node) == from) ? begin_edges_new_node + 1
-                                                                          : begin_edges_new_node;
-    };
-
-    std::unordered_set<NodeID> visited_nodes;
-    // skip trivial nodes without generating the intersection in between, stop at the very first
-    // intersection of degree > 2
-    while (0 == visited_nodes.count(query_node) &&
-           2 == node_based_graph.GetOutDegree(node_based_graph.GetTarget(query_edge)))
-    {
-        visited_nodes.insert(query_node);
-        const auto next_node = node_based_graph.GetTarget(query_edge);
-        const auto next_edge = get_next_edge(query_node, query_edge);
-
-        query_node = next_node;
-        query_edge = next_edge;
-
-        // check if there is a relevant change in the graph
-        if (!CanBeCompressed(node_based_graph.GetEdgeData(query_edge),
-                             node_based_graph.GetEdgeData(next_edge),
-                             node_data_container) ||
-            (node_based_graph.GetTarget(next_edge) == starting_node))
-            break;
-    }
-
-    return {query_node, query_edge};
-}
-
-IntersectionView IntersectionGenerator::TransformIntersectionShapeIntoView(
-    const NodeID previous_node,
-    const EdgeID entering_via_edge,
-    const IntersectionShape &intersection_shape) const
-{
-    // requires a copy of the intersection
-    return TransformIntersectionShapeIntoView(previous_node,
-                                              entering_via_edge,
-                                              intersection_shape, // creates a copy
-                                              intersection_shape, // reference to local
-                                              {}); // empty vector of performed merges
-}
-
-IntersectionView IntersectionGenerator::TransformIntersectionShapeIntoView(
-    const NodeID previous_node,
-    const EdgeID entering_via_edge,
-    const IntersectionShape &normalized_intersection,
-    const IntersectionShape &intersection,
-    const std::vector<IntersectionNormalizationOperation> &performed_merges) const
-{
-    const auto node_at_intersection = node_based_graph.GetTarget(entering_via_edge);
-
-    // request all turn restrictions
-    auto const restrictions = restriction_map.Restrictions(previous_node, node_at_intersection);
-
-    // check turn restrictions to find a node that is the only allowed target when coming from a
-    // node to an intersection
-    //     d
-    //     |
-    // a - b - c  and `only_straight_on ab | bc would return `c` for `a,b`
-    const auto find_only_valid_turn = [&]() -> boost::optional<NodeID> {
-        const auto itr = std::find_if(restrictions.first, restrictions.second, [](auto pair) {
-            return pair.second->is_only;
-        });
-        if (itr != restrictions.second)
-            return itr->second->AsNodeRestriction().to;
-        else
-            return boost::none;
-    };
-
-    const auto only_valid_turn = find_only_valid_turn();
-
-    // barriers change our behaviour regarding u-turns
-    const bool is_barrier_node = barrier_nodes.find(node_at_intersection) != barrier_nodes.end();
-
-    const auto connect_to_previous_node = [this, previous_node](const IntersectionShapeData road) {
-        return node_based_graph.GetTarget(road.eid) == previous_node;
-    };
-
-    // check which of the edges is the u-turn edge
-    const auto uturn_edge_itr =
-        std::find_if(intersection.begin(), intersection.end(), connect_to_previous_node);
-
-    // there needs to be a connection, otherwise stuff went seriously wrong. Note that this is not
-    // necessarily the same id as `entering_via_edge`.
-    // In cases where parallel edges are present, we only remember the minimal edge. Both share
-    // exactly the same coordinates, so the u-turn is still the best choice here.
-    BOOST_ASSERT(uturn_edge_itr != intersection.end());
-
-    const auto is_restricted = [&](const NodeID destination) {
-        // check if we have a dedicated destination
-        if (only_valid_turn)
-            return *only_valid_turn != destination;
-
-        // check if explicitly forbidden
-        return restrictions.second !=
-               std::find_if(restrictions.first, restrictions.second, [&](const auto &restriction) {
-                   return restriction.second->AsNodeRestriction().to == destination;
-               });
-    };
-
-    const auto is_allowed_turn = [&](const IntersectionShapeData &road) {
-        const auto &road_data = node_based_graph.GetEdgeData(road.eid);
-        const NodeID road_destination_node = node_based_graph.GetTarget(road.eid);
-        // reverse edges are never valid turns because the resulting turn would look like this:
-        // from_node --via_edge--> node_at_intersection <--onto_edge-- to_node
-        // however we need this for capture intersection shape for incoming one-ways
-        return !road_data.reversed &&
-               // we are not turning over a barrier
-               (!is_barrier_node || road_destination_node == previous_node) &&
-               // don't allow restricted turns
-               !is_restricted(road_destination_node);
-
-    };
-
-    // due to merging of roads, the u-turn might actually not be part of the intersection anymore
-    // uturn is a pair of {edge id, bearing}
-    const auto uturn = [&]() {
-        const auto merge_entry = std::find_if(
-            performed_merges.begin(), performed_merges.end(), [&uturn_edge_itr](const auto entry) {
-                return entry.merged_eid == uturn_edge_itr->eid;
-            });
-        if (merge_entry != performed_merges.end())
-        {
-            const auto merged_into_id = merge_entry->into_eid;
-            const auto merged_u_turn = std::find_if(
-                normalized_intersection.begin(),
-                normalized_intersection.end(),
-                [&](const IntersectionShapeData &road) { return road.eid == merged_into_id; });
-            BOOST_ASSERT(merged_u_turn != normalized_intersection.end());
-            return std::make_pair(merged_u_turn->eid,
-                                  util::bearing::reverse(merged_u_turn->bearing));
-        }
-        else
-        {
-            const auto uturn_edge_at_normalized_intersection_itr =
-                std::find_if(normalized_intersection.begin(),
-                             normalized_intersection.end(),
-                             connect_to_previous_node);
-            BOOST_ASSERT(uturn_edge_at_normalized_intersection_itr !=
-                         normalized_intersection.end());
-            return std::make_pair(
-                uturn_edge_at_normalized_intersection_itr->eid,
-                util::bearing::reverse(uturn_edge_at_normalized_intersection_itr->bearing));
-        }
-    }();
-
-    IntersectionView intersection_view;
-    intersection_view.reserve(normalized_intersection.size());
-    std::transform(normalized_intersection.begin(),
-                   normalized_intersection.end(),
-                   std::back_inserter(intersection_view),
-                   [&](const IntersectionShapeData &road) {
-                       return IntersectionViewData(
-                           road,
-                           is_allowed_turn(road),
-                           util::bearing::angleBetween(uturn.second, road.bearing));
-                   });
-
-    const auto uturn_edge_at_intersection_view_itr =
-        std::find_if(intersection_view.begin(), intersection_view.end(), connect_to_previous_node);
-    // number of found valid exit roads
-    const auto valid_count =
-        std::count_if(intersection_view.begin(),
-                      intersection_view.end(),
-                      [](const IntersectionViewData &road) { return road.entry_allowed; });
-    // in general, we don't wan't to allow u-turns. If we don't look at a barrier, we have to check
-    // for dead end streets. These are the only ones that we allow uturns for, next to barriers
-    // (which are also kind of a dead end, but we don't have to check these again :))
-    if (uturn_edge_at_intersection_view_itr != intersection_view.end() &&
-        ((uturn_edge_at_intersection_view_itr->entry_allowed && !is_barrier_node &&
-          valid_count != 1) ||
-         valid_count == 0))
-    {
-        const auto allow_uturn_at_dead_end = [&]() {
-            const auto &uturn_data = node_based_graph.GetEdgeData(uturn_edge_itr->eid);
-
-            // we can't turn back onto oneway streets
-            if (uturn_data.reversed)
-                return false;
-
-            // don't allow explicitly restricted turns
-            if (is_restricted(previous_node))
-                return false;
-
-            // we define dead ends as roads that can only be entered via the possible u-turn
-            const auto is_bidirectional = [&](const EdgeID entering_via_edge) {
-                const auto to_node = node_based_graph.GetTarget(entering_via_edge);
-                const auto reverse_edge = node_based_graph.FindEdge(to_node, node_at_intersection);
-                BOOST_ASSERT(reverse_edge != SPECIAL_EDGEID);
-                return !node_based_graph.GetEdgeData(reverse_edge).reversed;
-            };
-
-            const auto bidirectional_edges = [&]() {
-                std::uint32_t count = 0;
-                for (const auto eid : node_based_graph.GetAdjacentEdgeRange(node_at_intersection))
-                    if (is_bidirectional(eid))
-                        ++count;
-                return count;
-            }();
-
-            // Checking for dead-end streets is kind of difficult. There is obvious dead ends
-            // (single road connected)
-            return bidirectional_edges <= 1;
-        }();
-        uturn_edge_at_intersection_view_itr->entry_allowed = allow_uturn_at_dead_end;
-    }
-    std::sort(std::begin(intersection_view),
-              std::end(intersection_view),
-              std::mem_fn(&IntersectionViewData::CompareByAngle));
-
-    // Move entering_via_edge to intersection front and place all roads prior entering_via_edge
-    // at the end of the intersection view with 360° angle
-    auto entering_via_it = std::find_if(intersection_view.begin(),
-                                        intersection_view.end(),
-                                        [&uturn](auto &road) { return road.eid == uturn.first; });
-
-    OSRM_ASSERT(entering_via_it != intersection_view.end() && entering_via_it->angle >= 0. &&
-                    entering_via_it->angle < std::numeric_limits<double>::epsilon(),
-                coordinates[node_at_intersection]);
-
-    if (entering_via_it != intersection_view.begin() && entering_via_it != intersection_view.end())
-    {
-        std::for_each(
-            intersection_view.begin(), entering_via_it, [](auto &road) { road.angle = 360.; });
-        std::rotate(intersection_view.begin(), entering_via_it, intersection_view.end());
-    }
-
-    return intersection_view;
-}
-
-const CoordinateExtractor &IntersectionGenerator::GetCoordinateExtractor() const
-{
-    return coordinate_extractor;
-}
-
-} // namespace guidance
-} // namespace extractor
-} // namespace osrm

src/extractor/guidance/intersection_handler.cpp

@@ -1,5 +1,6 @@
 #include "extractor/guidance/intersection_handler.hpp"
 #include "extractor/guidance/constants.hpp"
+#include "extractor/intersection/intersection_analysis.hpp"
 
 #include "util/coordinate_calculation.hpp"
 #include "util/guidance/name_announcements.hpp"
@@ -45,17 +46,27 @@ inline bool requiresAnnouncement(const util::NodeBasedDynamicGraph &node_based_g
 }
 } // namespace detail
 
-IntersectionHandler::IntersectionHandler(const util::NodeBasedDynamicGraph &node_based_graph,
-                                         const EdgeBasedNodeDataContainer &node_data_container,
-                                         const std::vector<util::Coordinate> &coordinates,
-                                         const util::NameTable &name_table,
-                                         const SuffixTable &street_name_suffix_table,
-                                         const IntersectionGenerator &intersection_generator)
+IntersectionHandler::IntersectionHandler(
+    const util::NodeBasedDynamicGraph &node_based_graph,
+    const EdgeBasedNodeDataContainer &node_data_container,
+    const std::vector<util::Coordinate> &node_coordinates,
+    const extractor::CompressedEdgeContainer &compressed_geometries,
+    const RestrictionMap &node_restriction_map,
+    const std::unordered_set<NodeID> &barrier_nodes,
+    const guidance::TurnLanesIndexedArray &turn_lanes_data,
+    const util::NameTable &name_table,
+    const SuffixTable &street_name_suffix_table)
     : node_based_graph(node_based_graph), node_data_container(node_data_container),
-      coordinates(coordinates), name_table(name_table),
-      street_name_suffix_table(street_name_suffix_table),
-      intersection_generator(intersection_generator),
-      graph_walker(node_based_graph, node_data_container, intersection_generator)
+      node_coordinates(node_coordinates), compressed_geometries(compressed_geometries),
+      node_restriction_map(node_restriction_map), barrier_nodes(barrier_nodes),
+      turn_lanes_data(turn_lanes_data), name_table(name_table),
+      street_name_suffix_table(street_name_suffix_table), graph_walker(node_based_graph,
+                                                                       node_data_container,
+                                                                       node_coordinates,
+                                                                       compressed_geometries,
+                                                                       node_restriction_map,
+                                                                       barrier_nodes,
+                                                                       turn_lanes_data)
 {
 }
 
@@ -71,17 +82,19 @@ TurnType::Enum IntersectionHandler::findBasicTurnType(const EdgeID via_edge,
     if (!on_ramp && onto_ramp)
         return TurnType::OnRamp;
 
-    const auto &in_name =
+    const auto &in_name_id =
         node_data_container.GetAnnotation(node_based_graph.GetEdgeData(via_edge).annotation_data)
             .name_id;
-    const auto &out_name =
+    const auto &out_name_id =
         node_data_container.GetAnnotation(node_based_graph.GetEdgeData(road.eid).annotation_data)
             .name_id;
+    const auto &in_name_empty = name_table.GetNameForID(in_name_id).empty();
+    const auto &out_name_empty = name_table.GetNameForID(out_name_id).empty();
 
     const auto same_name = !util::guidance::requiresNameAnnounced(
-        in_name, out_name, name_table, street_name_suffix_table);
+        in_name_id, out_name_id, name_table, street_name_suffix_table);
 
-    if (in_name != EMPTY_NAMEID && out_name != EMPTY_NAMEID && same_name)
+    if (!in_name_empty && !out_name_empty && same_name)
     {
         return TurnType::Continue;
     }
@@ -160,8 +173,8 @@ TurnInstruction IntersectionHandler::getInstructionForObvious(const std::size_t
                     // or actually follow the full road. When 2399 lands, we can exchange here for a
                     // precalculated distance value.
                     const auto distance = util::coordinate_calculation::haversineDistance(
-                        coordinates[node_based_graph.GetTarget(via_edge)],
-                        coordinates[node_based_graph.GetTarget(road.eid)]);
+                        node_coordinates[node_based_graph.GetTarget(via_edge)],
+                        node_coordinates[node_based_graph.GetTarget(road.eid)]);
 
                     return {TurnType::Turn,
                             (angularDeviation(road.angle, STRAIGHT_ANGLE) < NARROW_TURN_ANGLE &&
@@ -460,17 +473,24 @@ IntersectionHandler::getNextIntersection(const NodeID at, const EdgeID via) cons
     // Starting at node `a` via edge `e0` the intersection generator returns the intersection at `c`
     // writing `tl` (traffic signal) node and the edge `e1` which has the intersection as target.
 
-    const auto intersection_parameters = intersection_generator.SkipDegreeTwoNodes(at, via);
+    const auto intersection_parameters =
+        intersection::skipDegreeTwoNodes(node_based_graph, {at, via});
     // This should never happen, guard against nevertheless
-    if (intersection_parameters.nid == SPECIAL_NODEID ||
-        intersection_parameters.via_eid == SPECIAL_EDGEID)
+    if (intersection_parameters.node == SPECIAL_NODEID ||
+        intersection_parameters.edge == SPECIAL_EDGEID)
     {
         return boost::none;
     }
 
-    auto intersection =
-        intersection_generator(intersection_parameters.nid, intersection_parameters.via_eid);
-    auto intersection_node = node_based_graph.GetTarget(intersection_parameters.via_eid);
+    auto intersection = intersection::getConnectedRoads<false>(node_based_graph,
+                                                               node_data_container,
+                                                               node_coordinates,
+                                                               compressed_geometries,
+                                                               node_restriction_map,
+                                                               barrier_nodes,
+                                                               turn_lanes_data,
+                                                               intersection_parameters);
+    auto intersection_node = node_based_graph.GetTarget(intersection_parameters.edge);
 
     if (intersection.size() <= 2 || intersection.isTrafficSignalOrBarrier())
     {
@@ -488,8 +508,8 @@ bool IntersectionHandler::isSameName(const EdgeID source_edge_id, const EdgeID t
     const auto &target_edge_data = node_data_container.GetAnnotation(
         node_based_graph.GetEdgeData(target_edge_id).annotation_data);
 
-    return source_edge_data.name_id != EMPTY_NAMEID && //
-           target_edge_data.name_id != EMPTY_NAMEID && //
+    return !name_table.GetNameForID(source_edge_data.name_id).empty() && //
+           !name_table.GetNameForID(target_edge_data.name_id).empty() && //
            !util::guidance::requiresNameAnnounced(source_edge_data.name_id,
                                                   target_edge_data.name_id,
                                                   name_table,

src/extractor/guidance/intersection_normalizer.cpp

@@ -1,430 +0,0 @@
-#include "extractor/guidance/intersection_normalizer.hpp"
-#include "util/bearing.hpp"
-#include "util/coordinate_calculation.hpp"
-
-#include <tuple>
-#include <utility>
-
-using osrm::util::angularDeviation;
-
-namespace osrm
-{
-namespace extractor
-{
-namespace guidance
-{
-
-IntersectionNormalizer::IntersectionNormalizer(
-    const util::NodeBasedDynamicGraph &node_based_graph,
-    const EdgeBasedNodeDataContainer &node_data_container,
-    const std::vector<util::Coordinate> &coordinates,
-    const util::NameTable &name_table,
-    const SuffixTable &street_name_suffix_table,
-    const IntersectionGenerator &intersection_generator)
-    : node_based_graph(node_based_graph), intersection_generator(intersection_generator),
-      mergable_road_detector(node_based_graph,
-                             node_data_container,
-                             coordinates,
-                             intersection_generator,
-                             intersection_generator.GetCoordinateExtractor(),
-                             name_table,
-                             street_name_suffix_table)
-{
-}
-
-IntersectionNormalizer::NormalizationResult IntersectionNormalizer::
-operator()(const NodeID node_at_intersection, IntersectionShape intersection) const
-{
-    const auto intersection_copy = intersection;
-    auto merged_shape_and_merges =
-        MergeSegregatedRoads(node_at_intersection, std::move(intersection));
-    merged_shape_and_merges.normalized_shape = AdjustBearingsForMergeAtDestination(
-        node_at_intersection, std::move(merged_shape_and_merges.normalized_shape));
-    return merged_shape_and_merges;
-}
-
-bool IntersectionNormalizer::CanMerge(const NodeID intersection_node,
-                                      const IntersectionShape &intersection,
-                                      std::size_t fist_index_in_ccw,
-                                      std::size_t second_index_in_ccw) const
-{
-    BOOST_ASSERT(((fist_index_in_ccw + 1) % intersection.size()) == second_index_in_ccw);
-
-    // don't merge on degree two, since it's most likely a bollard/traffic light or a round way
-    if (intersection.size() <= 2)
-        return false;
-
-    const auto can_merge = mergable_road_detector.CanMergeRoad(
-        intersection_node, intersection[fist_index_in_ccw], intersection[second_index_in_ccw]);
-
-    /*
-     * Merging should never depend on order/never merge more than two roads. To ensure that we don't
-     * merge anything that is impacted by neighboring roads (e.g. three roads of the same name as in
-     * parking lots/border checkpoints), we check if the neigboring roads would be merged as well.
-     * In that case, we cannot merge, since we would end up merging multiple items together
-     */
-    const auto is_distinct = [&]() {
-        const auto next_index_in_ccw = (second_index_in_ccw + 1) % intersection.size();
-        const auto distinct_to_next_in_ccw = mergable_road_detector.IsDistinctFrom(
-            intersection[second_index_in_ccw], intersection[next_index_in_ccw]);
-        const auto prev_index_in_ccw =
-            (fist_index_in_ccw + intersection.size() - 1) % intersection.size();
-        const auto distinct_to_prev_in_ccw = mergable_road_detector.IsDistinctFrom(
-            intersection[prev_index_in_ccw], intersection[fist_index_in_ccw]);
-        return distinct_to_next_in_ccw && distinct_to_prev_in_ccw;
-    };
-
-    // use lazy evaluation to check only if mergable
-    return can_merge && is_distinct();
-}
-
-IntersectionNormalizationOperation
-IntersectionNormalizer::DetermineMergeDirection(const IntersectionShapeData &lhs,
-                                                const IntersectionShapeData &rhs) const
-{
-    if (node_based_graph.GetEdgeData(lhs.eid).reversed)
-        return {lhs.eid, rhs.eid};
-    else
-        return {rhs.eid, lhs.eid};
-}
-
-IntersectionShapeData IntersectionNormalizer::MergeRoads(const IntersectionShapeData &into,
-                                                         const IntersectionShapeData &from) const
-{
-    // we only merge small angles. If the difference between both is large, we are looking at a
-    // bearing leading north. Such a bearing cannot be handled via the basic average. In this
-    // case we actually need to shift the bearing by half the difference.
-    const auto aroundZero = [](const double first, const double second) {
-        return (std::max(first, second) - std::min(first, second)) >= 180;
-    };
-
-    // find the angle between two other angles
-    const auto combineAngles = [aroundZero](const double first, const double second) {
-        if (!aroundZero(first, second))
-            return .5 * (first + second);
-        else
-        {
-            const auto offset = angularDeviation(first, second);
-            auto new_angle = std::max(first, second) + .5 * offset;
-            if (new_angle >= 360)
-                return new_angle - 360;
-            return new_angle;
-        }
-    };
-
-    auto result = into;
-    BOOST_ASSERT(!node_based_graph.GetEdgeData(into.eid).reversed);
-    result.bearing = combineAngles(into.bearing, from.bearing);
-    BOOST_ASSERT(0 <= result.bearing && result.bearing < 360.0);
-    return result;
-}
-
-IntersectionShapeData
-IntersectionNormalizer::MergeRoads(const IntersectionNormalizationOperation direction,
-                                   const IntersectionShapeData &lhs,
-                                   const IntersectionShapeData &rhs,
-                                   const double opposite_bearing) const
-{
-    // In some intersections, turning roads can introduce artificial turns if we merge here.
-    // Consider a scenario like:
-    // 
-    //  a     .  g - f
-    //  |   .
-    //  | .
-    //  |.
-    // d-b--------e
-    //  |
-    //  c
-    // 
-    // Merging `bgf` and `be` would introduce an angle, even though d-b-e is perfectly straight
-    // We don't change the angle, if such an opposite road exists
-    if (direction.merged_eid == lhs.eid)
-    {
-        // change the angle only if the opposite direction is not nearly straight
-        if (angularDeviation(opposite_bearing, rhs.bearing) >
-            (STRAIGHT_ANGLE - MAXIMAL_ALLOWED_NO_TURN_DEVIATION))
-            return rhs;
-        else
-            return MergeRoads(rhs, lhs);
-    }
-    else
-    {
-        if (angularDeviation(opposite_bearing, lhs.bearing) >
-            (STRAIGHT_ANGLE - MAXIMAL_ALLOWED_NO_TURN_DEVIATION))
-            return lhs;
-        else
-            return MergeRoads(lhs, rhs);
-    }
-}
-
-/*
- * Segregated Roads often merge onto a single intersection.
- * While technically representing different roads, they are
- * often looked at as a single road.
- * Due to the merging, turn Angles seem off, wenn we compute them from the
- * initial positions.
- *
- *         b<b<b<b(1)<b<b<b
- * aaaaa-b
- *         b>b>b>b(2)>b>b>b
- *
- * Would be seen as a slight turn going fro a to (2). A Sharp turn going from
- * (1) to (2).
- *
- * In cases like these, we megre this segregated roads into a single road to
- * end up with a case like:
- *
- * aaaaa-bbbbbb
- *
- * for the turn representation.
- * Anything containing the first u-turn in a merge affects all other angles
- * and is handled separately from all others.
- */
-IntersectionNormalizer::NormalizationResult
-IntersectionNormalizer::MergeSegregatedRoads(const NodeID intersection_node,
-                                             IntersectionShape intersection) const
-{
-    const auto getRight = [&](std::size_t index) {
-        return (index + intersection.size() - 1) % intersection.size();
-    };
-
-    // This map stores for all edges that participated in a merging operation in which edge id they
-    // end up in the end. We only store what we have merged into other edges.
-    std::vector<IntersectionNormalizationOperation> merging_map;
-    const auto merge = [this, &merging_map](const IntersectionShapeData &first,
-                                            const IntersectionShapeData &second,
-                                            const double opposite_bearing) {
-
-        const auto direction = DetermineMergeDirection(first, second);
-        BOOST_ASSERT(
-            std::find_if(merging_map.begin(), merging_map.end(), [direction](const auto pair) {
-                return pair.merged_eid == direction.merged_eid;
-            }) == merging_map.end());
-        merging_map.push_back(direction);
-        return MergeRoads(direction, first, second, opposite_bearing);
-    };
-
-    if (intersection.size() <= 1)
-        return {intersection, merging_map};
-
-    const auto intersection_copy = intersection;
-    const auto opposite_bearing = [this, intersection_copy](const IntersectionShapeData &lhs,
-                                                            const IntersectionShapeData &rhs) {
-        if (node_based_graph.GetEdgeData(lhs.eid).reversed)
-        {
-            return intersection_copy.FindClosestBearing(util::bearing::reverse(rhs.bearing))
-                ->bearing;
-        }
-        else
-        {
-            BOOST_ASSERT(node_based_graph.GetEdgeData(rhs.eid).reversed);
-            return intersection_copy.FindClosestBearing(util::bearing::reverse(lhs.bearing))
-                ->bearing;
-        }
-    };
-    // check for merges including the basic u-turn
-    // these result in an adjustment of all other angles. This is due to how these angles are
-    // perceived. Considering the following example:
-    //
-    //   c   b
-    //     Y
-    //     a
-    //
-    // coming from a to b (given a road that splits at the fork into two one-ways), the turn is not
-    // considered as a turn but rather as going straight.
-    // Now if we look at the situation merging:
-    //
-    //  a     b
-    //    \ /
-    // e - + - d
-    //     |
-    //     c
-    //
-    // With a,b representing the same road, the intersection itself represents a classif for way
-    // intersection so we handle it like
-    //
-    //   (a),b
-    //      |
-    // e -  + - d
-    //      |
-    //      c
-    //
-    // To be able to consider this adjusted representation down the line, we merge some roads.
-    // If the merge occurs at the u-turn edge, we need to adjust all angles, though, since they are
-    // with respect to the now changed perceived location of a. If we move (a) to the left, we add
-    // the difference to all angles. Otherwise we subtract it.
-    // these result in an adjustment of all other angles
-    if (CanMerge(intersection_node, intersection, intersection.size() - 1, 0))
-    {
-        // moving `a` to the left
-        const auto opposite = opposite_bearing(intersection.front(), intersection.back());
-        intersection[0] = merge(intersection.front(), intersection.back(), opposite);
-        // FIXME if we have a left-sided country, we need to switch this off and enable it
-        // below
-        intersection.pop_back();
-    }
-    else if (CanMerge(intersection_node, intersection, 0, 1))
-    {
-        const auto opposite = opposite_bearing(intersection.front(), intersection[1]);
-        intersection[0] = merge(intersection.front(), intersection[1], opposite);
-        intersection.erase(intersection.begin() + 1);
-    }
-
-    // a merge including the first u-turn requires an adjustment of the turn angles
-    // therefore these are handled prior to this step
-    for (std::size_t index = 2; index < intersection.size(); ++index)
-    {
-        if (CanMerge(intersection_node, intersection, getRight(index), index))
-        {
-            const auto opposite =
-                opposite_bearing(intersection[getRight(index)], intersection[index]);
-            intersection[getRight(index)] =
-                merge(intersection[getRight(index)], intersection[index], opposite);
-            intersection.erase(intersection.begin() + index);
-            --index;
-        }
-    }
-    return {intersection, merging_map};
-}
-
-// OSM can have some very steep angles for joining roads. Considering the following intersection:
-//        x
-//        |
-//        v __________c
-//       /
-// a ---d
-//       \ __________b
-//
-// with c->d as a oneway
-// and d->b as a oneway, the turn von x->d is actually a turn from x->a. So when looking at the
-// intersection coming from x, we want to interpret the situation as
-//           x
-//           |
-// a __ d __ v__________c
-//      |
-//      |_______________b
-//
-// Where we see the turn to `d` as a right turn, rather than going straight.
-// We do this by adjusting the local turn angle at `x` to turn onto `d` to be reflective of this
-// situation, where `v` would be the node at the intersection.
-IntersectionShape
-IntersectionNormalizer::AdjustBearingsForMergeAtDestination(const NodeID node_at_intersection,
-                                                            IntersectionShape intersection) const
-{
-    // nothing to do for dead ends
-    if (intersection.size() <= 1)
-        return intersection;
-
-    // we don't adjust any road that is longer than 30 meters (between centers of intersections),
-    // since the road is probably too long otherwise to impact perception.
-    const double constexpr PRUNING_DISTANCE = 30;
-    // never adjust u-turns
-    for (std::size_t index = 0; index < intersection.size(); ++index)
-    {
-        auto &road = intersection[index];
-        // only consider roads that are close
-        if (road.segment_length > PRUNING_DISTANCE)
-            continue;
-
-        // to find out about the above situation, we need to look at the next intersection (at d in
-        // the example). If the initial road can be merged to the left/right, we are about to adjust
-        // the angle.
-        const auto next_intersection_along_road = intersection_generator.ComputeIntersectionShape(
-            node_based_graph.GetTarget(road.eid), node_at_intersection);
-
-        if (next_intersection_along_road.size() <= 1)
-            continue;
-
-        const auto node_at_next_intersection = node_based_graph.GetTarget(road.eid);
-
-        const auto adjustAngle = [](double angle, double offset) {
-            angle += offset;
-            if (angle > 360)
-                return angle - 360.;
-            else if (angle < 0)
-                return angle + 360.;
-            return angle;
-        };
-
-        const auto range = node_based_graph.GetAdjacentEdgeRange(node_at_next_intersection);
-        if (range.size() <= 1)
-            continue;
-
-        // the order does not matter
-        const auto get_offset = [](const IntersectionShapeData &lhs,
-                                   const IntersectionShapeData &rhs) {
-            return 0.5 * angularDeviation(lhs.bearing, rhs.bearing);
-        };
-
-        // When offsetting angles in our turns, we don't want to get past the next turn. This
-        // function simply limits an offset to be at most half the distance to the next turn in the
-        // offfset direction
-        const auto get_corrected_offset = [](
-            const double offset,
-            const IntersectionShapeData &road,
-            const IntersectionShapeData &next_road_in_offset_direction) {
-            const auto offset_limit =
-                angularDeviation(road.bearing, next_road_in_offset_direction.bearing);
-            // limit the offset with an additional buffer
-            return (offset + MAXIMAL_ALLOWED_NO_TURN_DEVIATION > offset_limit) ? 0.5 * offset_limit
-                                                                               : offset;
-        };
-
-        // only if straighmost angles get smaller, we consider it an improvement
-        auto const improves_straightmost = [&](auto const index, auto const offset) {
-            const auto itr = next_intersection_along_road.FindClosestBearing(
-                util::bearing::reverse(next_intersection_along_road[index].bearing));
-            const auto angle = util::bearing::angleBetween(
-                util::bearing::reverse(itr->bearing), next_intersection_along_road[index].bearing);
-
-            return util::angularDeviation(angle, STRAIGHT_ANGLE) >
-                   util::angularDeviation(angle + offset, STRAIGHT_ANGLE);
-        };
-
-        // check if the u-turn edge at the next intersection could be merged to the left/right. If
-        // this is the case and the road is not far away (see previous distance check), if
-        // influences the perceived angle.
-        if (CanMerge(node_at_next_intersection, next_intersection_along_road, 0, 1))
-        {
-            const auto offset =
-                get_offset(next_intersection_along_road[0], next_intersection_along_road[1]);
-
-            if (improves_straightmost(0, -offset) && improves_straightmost(1, offset))
-            {
-                const auto corrected_offset = get_corrected_offset(
-                    offset,
-                    road,
-                    intersection[(intersection.size() + index - 1) % intersection.size()]);
-                // at the target intersection, we merge to the right, so we need to shift the
-                // current
-                // angle to the left
-                road.bearing = adjustAngle(road.bearing, corrected_offset);
-            }
-        }
-        else if (CanMerge(node_at_next_intersection,
-                          next_intersection_along_road,
-                          next_intersection_along_road.size() - 1,
-                          0))
-        {
-            const auto offset =
-                get_offset(next_intersection_along_road[0],
-                           next_intersection_along_road[next_intersection_along_road.size() - 1]);
-
-            if (improves_straightmost(0, offset) &&
-                improves_straightmost(next_intersection_along_road.size() - 1, -offset))
-            {
-                const auto corrected_offset = get_corrected_offset(
-                    offset, road, intersection[(index + 1) % intersection.size()]);
-                // at the target intersection, we merge to the left, so we need to shift the current
-                // angle to the right
-                road.bearing = adjustAngle(road.bearing, -corrected_offset);
-            }
-        }
-    }
-
-    return intersection;
-}
-
-} // namespace guidance
-} // namespace extractor
-} // namespace osrm

src/extractor/guidance/mergable_road_detector.cpp

@@ -1,8 +1,7 @@
 #include "extractor/guidance/mergable_road_detector.hpp"
 #include "extractor/guidance/constants.hpp"
-#include "extractor/guidance/coordinate_extractor.hpp"
-#include "extractor/guidance/intersection_generator.hpp"
 #include "extractor/guidance/node_based_graph_walker.hpp"
+#include "extractor/intersection/intersection_analysis.hpp"
 #include "extractor/query_node.hpp"
 #include "extractor/suffix_table.hpp"
 
@@ -23,6 +22,8 @@ namespace guidance
 namespace
 {
 // check a connected road for equality of a name
+// returns 'true' if no equality because this is used as a filter elsewhere, i.e. filter if fn
+// returns 'true'
 inline auto makeCheckRoadForName(const NameID name_id,
                                  const util::NodeBasedDynamicGraph &node_based_graph,
                                  const EdgeBasedNodeDataContainer &node_data_container,
@@ -32,32 +33,40 @@ inline auto makeCheckRoadForName(const NameID name_id,
     return [name_id, &node_based_graph, &node_data_container, &name_table, &suffix_table](
         const MergableRoadDetector::MergableRoadData &road) {
         // since we filter here, we don't want any other name than the one we are looking for
-        const auto road_name =
+        const auto road_name_id =
             node_data_container
                 .GetAnnotation(node_based_graph.GetEdgeData(road.eid).annotation_data)
                 .name_id;
-        if (name_id == EMPTY_NAMEID || road_name == EMPTY_NAMEID)
+        const auto road_name_empty = name_table.GetNameForID(road_name_id).empty();
+        const auto in_name_empty = name_table.GetNameForID(name_id).empty();
+        if (in_name_empty || road_name_empty)
             return true;
         const auto requires_announcement =
-            util::guidance::requiresNameAnnounced(name_id, road_name, name_table, suffix_table) ||
-            util::guidance::requiresNameAnnounced(road_name, name_id, name_table, suffix_table);
+            util::guidance::requiresNameAnnounced(
+                name_id, road_name_id, name_table, suffix_table) ||
+            util::guidance::requiresNameAnnounced(road_name_id, name_id, name_table, suffix_table);
 
         return requires_announcement;
     };
 }
 }
 
-MergableRoadDetector::MergableRoadDetector(const util::NodeBasedDynamicGraph &node_based_graph,
-                                           const EdgeBasedNodeDataContainer &node_data_container,
-                                           const std::vector<util::Coordinate> &node_coordinates,
-                                           const IntersectionGenerator &intersection_generator,
-                                           const CoordinateExtractor &coordinate_extractor,
-                                           const util::NameTable &name_table,
-                                           const SuffixTable &street_name_suffix_table)
+MergableRoadDetector::MergableRoadDetector(
+    const util::NodeBasedDynamicGraph &node_based_graph,
+    const EdgeBasedNodeDataContainer &node_data_container,
+    const std::vector<util::Coordinate> &node_coordinates,
+    const extractor::CompressedEdgeContainer &compressed_geometries,
+    const RestrictionMap &node_restriction_map,
+    const std::unordered_set<NodeID> &barrier_nodes,
+    const guidance::TurnLanesIndexedArray &turn_lanes_data,
+    const util::NameTable &name_table,
+    const SuffixTable &street_name_suffix_table)
     : node_based_graph(node_based_graph), node_data_container(node_data_container),
-      node_coordinates(node_coordinates), intersection_generator(intersection_generator),
-      coordinate_extractor(coordinate_extractor), name_table(name_table),
-      street_name_suffix_table(street_name_suffix_table)
+      node_coordinates(node_coordinates), compressed_geometries(compressed_geometries),
+      node_restriction_map(node_restriction_map), barrier_nodes(barrier_nodes),
+      turn_lanes_data(turn_lanes_data), name_table(name_table),
+      street_name_suffix_table(street_name_suffix_table),
+      coordinate_extractor(node_based_graph, compressed_geometries, node_coordinates)
 {
 }
 
@@ -165,8 +174,9 @@ bool MergableRoadDetector::EdgeDataSupportsMerge(
 bool MergableRoadDetector::IsTrafficLoop(const NodeID intersection_node,
                                          const MergableRoadData &road) const
 {
-    const auto connection = intersection_generator.SkipDegreeTwoNodes(intersection_node, road.eid);
-    return intersection_node == node_based_graph.GetTarget(connection.via_eid);
+    const auto connection =
+        intersection::skipDegreeTwoNodes(node_based_graph, {intersection_node, road.eid});
+    return intersection_node == node_based_graph.GetTarget(connection.edge);
 }
 
 bool MergableRoadDetector::IsNarrowTriangle(const NodeID intersection_node,
@@ -175,8 +185,22 @@ bool MergableRoadDetector::IsNarrowTriangle(const NodeID intersection_node,
 {
     // selection data to the right and left
     const auto constexpr SMALL_RANDOM_HOPLIMIT = 5;
-    IntersectionFinderAccumulator left_accumulator(SMALL_RANDOM_HOPLIMIT, intersection_generator),
-        right_accumulator(SMALL_RANDOM_HOPLIMIT, intersection_generator);
+    IntersectionFinderAccumulator left_accumulator(SMALL_RANDOM_HOPLIMIT,
+                                                   node_based_graph,
+                                                   node_data_container,
+                                                   node_coordinates,
+                                                   compressed_geometries,
+                                                   node_restriction_map,
+                                                   barrier_nodes,
+                                                   turn_lanes_data),
+        right_accumulator(SMALL_RANDOM_HOPLIMIT,
+                          node_based_graph,
+                          node_data_container,
+                          node_coordinates,
+                          compressed_geometries,
+                          node_restriction_map,
+                          barrier_nodes,
+                          turn_lanes_data);
 
     /* Standard following the straightmost road
      * Since both items have the same id, we can `select` based on any setup
@@ -188,8 +212,13 @@ bool MergableRoadDetector::IsNarrowTriangle(const NodeID intersection_node,
         /*requires entry=*/false,
         false);
 
-    NodeBasedGraphWalker graph_walker(
-        node_based_graph, node_data_container, intersection_generator);
+    NodeBasedGraphWalker graph_walker(node_based_graph,
+                                      node_data_container,
+                                      node_coordinates,
+                                      compressed_geometries,
+                                      node_restriction_map,
+                                      barrier_nodes,
+                                      turn_lanes_data);
     graph_walker.TraverseRoad(intersection_node, lhs.eid, left_accumulator, selector);
     /* if the intersection does not have a right turn, we continue onto the next one once
      * (skipping over a single small side street)
@@ -261,7 +290,13 @@ bool MergableRoadDetector::IsNarrowTriangle(const NodeID intersection_node,
 
     // check if both intersections are connected
     IntersectionFinderAccumulator connect_accumulator(SMALL_RANDOM_HOPLIMIT,
-                                                      intersection_generator);
+                                                      node_based_graph,
+                                                      node_data_container,
+                                                      node_coordinates,
+                                                      compressed_geometries,
+                                                      node_restriction_map,
+                                                      barrier_nodes,
+                                                      turn_lanes_data);
     graph_walker.TraverseRoad(node_based_graph.GetTarget(left_accumulator.via_edge_id),
                               connector_turn->eid,
                               connect_accumulator,
@@ -276,8 +311,13 @@ bool MergableRoadDetector::IsCircularShape(const NodeID intersection_node,
                                            const MergableRoadData &lhs,
                                            const MergableRoadData &rhs) const
 {
-    NodeBasedGraphWalker graph_walker(
-        node_based_graph, node_data_container, intersection_generator);
+    NodeBasedGraphWalker graph_walker(node_based_graph,
+                                      node_data_container,
+                                      node_coordinates,
+                                      compressed_geometries,
+                                      node_restriction_map,
+                                      barrier_nodes,
+                                      turn_lanes_data);
     const auto getCoordinatesAlongWay = [&](const EdgeID edge_id, const double max_length) {
         LengthLimitedCoordinateAccumulator accumulator(coordinate_extractor, max_length);
         SelectStraightmostRoadByNameAndOnlyChoice selector(
@@ -343,8 +383,13 @@ bool MergableRoadDetector::HaveSameDirection(const NodeID intersection_node,
         return false;
 
     // Find a coordinate following a road that is far away
-    NodeBasedGraphWalker graph_walker(
-        node_based_graph, node_data_container, intersection_generator);
+    NodeBasedGraphWalker graph_walker(node_based_graph,
+                                      node_data_container,
+                                      node_coordinates,
+                                      compressed_geometries,
+                                      node_restriction_map,
+                                      barrier_nodes,
+                                      turn_lanes_data);
     const auto getCoordinatesAlongWay = [&](const EdgeID edge_id, const double max_length) {
         LengthLimitedCoordinateAccumulator accumulator(coordinate_extractor, max_length);
         SelectStraightmostRoadByNameAndOnlyChoice selector(
@@ -414,10 +459,16 @@ bool MergableRoadDetector::HaveSameDirection(const NodeID intersection_node,
         return false;
 
     // compare reference distance:
-    const auto distance_between_roads = util::coordinate_calculation::findClosestDistance(
+    const auto distance_mid_left_to_right = util::coordinate_calculation::findClosestDistance(
         coordinates_to_the_left[coordinates_to_the_left.size() / 2],
         coordinates_to_the_right.begin(),
         coordinates_to_the_right.end());
+    const auto distance_mid_right_to_left = util::coordinate_calculation::findClosestDistance(
+        coordinates_to_the_right[coordinates_to_the_right.size() / 2],
+        coordinates_to_the_left.begin(),
+        coordinates_to_the_left.end());
+    const auto distance_between_roads =
+        std::min(distance_mid_left_to_right, distance_mid_right_to_left);
 
     const auto lane_count_lhs = std::max<int>(
         1, node_based_graph.GetEdgeData(lhs.eid).flags.road_classification.GetNumberOfLanes());
@@ -438,12 +489,12 @@ bool MergableRoadDetector::IsTrafficIsland(const NodeID intersection_node,
      * location with the same name repeatet at least three times
      */
     const auto left_connection =
-        intersection_generator.SkipDegreeTwoNodes(intersection_node, lhs.eid);
+        intersection::skipDegreeTwoNodes(node_based_graph, {intersection_node, lhs.eid});
     const auto right_connection =
-        intersection_generator.SkipDegreeTwoNodes(intersection_node, rhs.eid);
+        intersection::skipDegreeTwoNodes(node_based_graph, {intersection_node, rhs.eid});
 
-    const auto left_candidate = node_based_graph.GetTarget(left_connection.via_eid);
-    const auto right_candidate = node_based_graph.GetTarget(right_connection.via_eid);
+    const auto left_candidate = node_based_graph.GetTarget(left_connection.edge);
+    const auto right_candidate = node_based_graph.GetTarget(right_connection.edge);
 
     const auto candidate_is_valid =
         left_candidate == right_candidate && left_candidate != intersection_node;
@@ -465,16 +516,18 @@ bool MergableRoadDetector::IsTrafficIsland(const NodeID intersection_node,
                 .name_id;
 
         const auto has_required_name = [this, required_name_id](const auto edge_id) {
-            const auto road_name =
+            const auto road_name_id =
                 node_data_container
                     .GetAnnotation(node_based_graph.GetEdgeData(edge_id).annotation_data)
                     .name_id;
-            if (required_name_id == EMPTY_NAMEID || road_name == EMPTY_NAMEID)
+            const auto &road_name_empty = name_table.GetNameForID(road_name_id).empty();
+            const auto &required_name_empty = name_table.GetNameForID(required_name_id).empty();
+            if (required_name_empty && road_name_empty)
                 return false;
             return !util::guidance::requiresNameAnnounced(
-                       required_name_id, road_name, name_table, street_name_suffix_table) ||
+                       required_name_id, road_name_id, name_table, street_name_suffix_table) ||
                    !util::guidance::requiresNameAnnounced(
-                       road_name, required_name_id, name_table, street_name_suffix_table);
+                       road_name_id, required_name_id, name_table, street_name_suffix_table);
         };
 
         /* the beautiful way would be:
@@ -509,9 +562,16 @@ bool MergableRoadDetector::IsLinkRoad(const NodeID intersection_node,
                                       const MergableRoadData &road) const
 {
     const auto next_intersection_parameters =
-        intersection_generator.SkipDegreeTwoNodes(intersection_node, road.eid);
-    const auto next_intersection_along_road = intersection_generator.GetConnectedRoads(
-        next_intersection_parameters.nid, next_intersection_parameters.via_eid);
+        intersection::skipDegreeTwoNodes(node_based_graph, {intersection_node, road.eid});
+    const auto next_intersection_along_road =
+        intersection::getConnectedRoads<false>(node_based_graph,
+                                               node_data_container,
+                                               node_coordinates,
+                                               compressed_geometries,
+                                               node_restriction_map,
+                                               barrier_nodes,
+                                               turn_lanes_data,
+                                               next_intersection_parameters);
     const auto extract_name_id = [this](const MergableRoadData &road) {
         return node_data_container
             .GetAnnotation(node_based_graph.GetEdgeData(road.eid).annotation_data)
@@ -536,7 +596,7 @@ bool MergableRoadDetector::IsLinkRoad(const NodeID intersection_node,
 
     // we cannot be looking at the same road we came from
     if (node_based_graph.GetTarget(opposite_of_next_road_along_path->eid) ==
-        next_intersection_parameters.nid)
+        next_intersection_parameters.node)
         return false;
 
     /* check if the opposite of the next road decision was sane. It could have been just as well our

src/extractor/guidance/motorway_handler.cpp

@@ -2,6 +2,7 @@
 #include "extractor/guidance/constants.hpp"
 #include "extractor/guidance/road_classification.hpp"
 
+#include "util/assert.hpp"
 #include "util/bearing.hpp"
 #include "util/guidance/name_announcements.hpp"
 
@@ -42,15 +43,21 @@ inline bool isRampClass(EdgeID eid, const util::NodeBasedDynamicGraph &node_base
 MotorwayHandler::MotorwayHandler(const util::NodeBasedDynamicGraph &node_based_graph,
                                  const EdgeBasedNodeDataContainer &node_data_container,
                                  const std::vector<util::Coordinate> &coordinates,
+                                 const extractor::CompressedEdgeContainer &compressed_geometries,
+                                 const RestrictionMap &node_restriction_map,
+                                 const std::unordered_set<NodeID> &barrier_nodes,
+                                 const guidance::TurnLanesIndexedArray &turn_lanes_data,
                                  const util::NameTable &name_table,
-                                 const SuffixTable &street_name_suffix_table,
-                                 const IntersectionGenerator &intersection_generator)
+                                 const SuffixTable &street_name_suffix_table)
     : IntersectionHandler(node_based_graph,
                           node_data_container,
                           coordinates,
+                          compressed_geometries,
+                          node_restriction_map,
+                          barrier_nodes,
+                          turn_lanes_data,
                           name_table,
-                          street_name_suffix_table,
-                          intersection_generator)
+                          street_name_suffix_table)
 {
 }
 
@@ -271,17 +278,11 @@ Intersection MotorwayHandler::fromMotorway(const EdgeID via_eid, Intersection in
         // handle motorway forks
         else if (exiting_motorways > 1)
         {
-            if (exiting_motorways == 2 && intersection.size() == 2)
-            {
-                intersection[1].instruction =
-                    getInstructionForObvious(intersection.size(),
-                                             via_eid,
-                                             isThroughStreet(1, intersection),
-                                             intersection[1]);
-                intersection[0].entry_allowed = false; // UTURN on the freeway
-            }
-            else if (exiting_motorways == 2)
+            if (exiting_motorways == 2)
             {
+                OSRM_ASSERT(intersection.size() != 2,
+                            node_coordinates[node_based_graph.GetTarget(via_eid)]);
+
                 // standard fork
                 std::size_t first_valid = std::numeric_limits<std::size_t>::max(),
                             second_valid = std::numeric_limits<std::size_t>::max();
@@ -379,11 +380,15 @@ Intersection MotorwayHandler::fromRamp(const EdgeID via_eid, Intersection inters
             //
             //     7         1
             //          0
+            const auto &first_intersection_name_empty =
+                name_table.GetNameForID(first_intersection_data.name_id).empty();
+            const auto &second_intersection_name_empty =
+                name_table.GetNameForID(second_intersection_data.name_id).empty();
             if (intersection[1].entry_allowed)
             {
                 if (isMotorwayClass(intersection[1].eid, node_based_graph) &&
-                    second_intersection_data.name_id != EMPTY_NAMEID &&
-                    first_intersection_data.name_id != EMPTY_NAMEID && first_second_same_name)
+                    !second_intersection_name_empty && !first_intersection_name_empty &&
+                    first_second_same_name)
                 {
                     // circular order indicates a merge to the left (0-3 onto 4
                     if (angularDeviation(intersection[1].angle, STRAIGHT_ANGLE) <
@@ -407,8 +412,8 @@ Intersection MotorwayHandler::fromRamp(const EdgeID via_eid, Intersection inters
             {
                 BOOST_ASSERT(intersection[2].entry_allowed);
                 if (isMotorwayClass(intersection[2].eid, node_based_graph) &&
-                    second_intersection_data.name_id != EMPTY_NAMEID &&
-                    first_intersection_data.name_id != EMPTY_NAMEID && first_second_same_name)
+                    !second_intersection_name_empty && !first_intersection_name_empty &&
+                    first_second_same_name)
                 {
                     // circular order (5-0) onto 4
                     if (angularDeviation(intersection[2].angle, STRAIGHT_ANGLE) <

src/extractor/guidance/node_based_graph_walker.cpp

@@ -1,4 +1,5 @@
 #include "extractor/guidance/node_based_graph_walker.hpp"
+#include "extractor/intersection/intersection_analysis.hpp"
 #include "util/bearing.hpp"
 #include "util/coordinate_calculation.hpp"
 
@@ -14,11 +15,18 @@ namespace guidance
 {
 
 // ---------------------------------------------------------------------------------
-NodeBasedGraphWalker::NodeBasedGraphWalker(const util::NodeBasedDynamicGraph &node_based_graph,
-                                           const EdgeBasedNodeDataContainer &node_data_container,
-                                           const IntersectionGenerator &intersection_generator)
+NodeBasedGraphWalker::NodeBasedGraphWalker(
+    const util::NodeBasedDynamicGraph &node_based_graph,
+    const EdgeBasedNodeDataContainer &node_data_container,
+    const std::vector<util::Coordinate> &node_coordinates,
+    const extractor::CompressedEdgeContainer &compressed_geometries,
+    const RestrictionMap &node_restriction_map,
+    const std::unordered_set<NodeID> &barrier_nodes,
+    const guidance::TurnLanesIndexedArray &turn_lanes_data)
     : node_based_graph(node_based_graph), node_data_container(node_data_container),
-      intersection_generator(intersection_generator)
+      node_coordinates(node_coordinates), compressed_geometries(compressed_geometries),
+      node_restriction_map(node_restriction_map), barrier_nodes(barrier_nodes),
+      turn_lanes_data(turn_lanes_data)
 {
 }
 
@@ -235,8 +243,18 @@ operator()(const NodeID /*nid*/,
 
 // ---------------------------------------------------------------------------------
 IntersectionFinderAccumulator::IntersectionFinderAccumulator(
-    const std::uint8_t hop_limit, const IntersectionGenerator &intersection_generator)
-    : hops(0), hop_limit(hop_limit), intersection_generator(intersection_generator)
+    const std::uint8_t hop_limit,
+    const util::NodeBasedDynamicGraph &node_based_graph,
+    const EdgeBasedNodeDataContainer &node_data_container,
+    const std::vector<util::Coordinate> &node_coordinates,
+    const extractor::CompressedEdgeContainer &compressed_geometries,
+    const RestrictionMap &node_restriction_map,
+    const std::unordered_set<NodeID> &barrier_nodes,
+    const guidance::TurnLanesIndexedArray &turn_lanes_data)
+    : hops(0), hop_limit(hop_limit), node_based_graph(node_based_graph),
+      node_data_container(node_data_container), node_coordinates(node_coordinates),
+      compressed_geometries(compressed_geometries), node_restriction_map(node_restriction_map),
+      barrier_nodes(barrier_nodes), turn_lanes_data(turn_lanes_data)
 {
 }
 
@@ -261,7 +279,14 @@ void IntersectionFinderAccumulator::update(const NodeID from_node,
     nid = from_node;
     via_edge_id = via_edge;
 
-    intersection = intersection_generator.GetConnectedRoads(from_node, via_edge, true);
+    intersection = intersection::getConnectedRoads<true>(node_based_graph,
+                                                         node_data_container,
+                                                         node_coordinates,
+                                                         compressed_geometries,
+                                                         node_restriction_map,
+                                                         barrier_nodes,
+                                                         turn_lanes_data,
+                                                         {from_node, via_edge});
 }
 
 } // namespace guidance

src/extractor/guidance/roundabout_handler.cpp

@@ -23,21 +23,26 @@ namespace extractor
 namespace guidance
 {
 
-RoundaboutHandler::RoundaboutHandler(const util::NodeBasedDynamicGraph &node_based_graph,
-                                     const EdgeBasedNodeDataContainer &node_data_container,
-                                     const std::vector<util::Coordinate> &coordinates,
-                                     const CompressedEdgeContainer &compressed_edge_container,
-                                     const util::NameTable &name_table,
-                                     const SuffixTable &street_name_suffix_table,
-                                     const IntersectionGenerator &intersection_generator)
+RoundaboutHandler::RoundaboutHandler(
+    const util::NodeBasedDynamicGraph &node_based_graph,
+    const EdgeBasedNodeDataContainer &node_data_container,
+    const std::vector<util::Coordinate> &coordinates,
+    const extractor::CompressedEdgeContainer &compressed_geometries,
+    const RestrictionMap &node_restriction_map,
+    const std::unordered_set<NodeID> &barrier_nodes,
+    const guidance::TurnLanesIndexedArray &turn_lanes_data,
+    const util::NameTable &name_table,
+    const SuffixTable &street_name_suffix_table)
     : IntersectionHandler(node_based_graph,
                           node_data_container,
                           coordinates,
+                          compressed_geometries,
+                          node_restriction_map,
+                          barrier_nodes,
+                          turn_lanes_data,
                           name_table,
-                          street_name_suffix_table,
-                          intersection_generator),
-      compressed_edge_container(compressed_edge_container),
-      coordinate_extractor(node_based_graph, compressed_edge_container, coordinates)
+                          street_name_suffix_table),
+      coordinate_extractor(node_based_graph, compressed_geometries, coordinates)
 {
 }
 
@@ -56,7 +61,6 @@ bool RoundaboutHandler::canProcess(const NodeID from_nid,
 Intersection RoundaboutHandler::
 operator()(const NodeID from_nid, const EdgeID via_eid, Intersection intersection) const
 {
-    invalidateExitAgainstDirection(from_nid, via_eid, intersection);
     const auto flags = getRoundaboutFlags(from_nid, via_eid, intersection);
     const auto roundabout_type = getRoundaboutType(node_based_graph.GetTarget(via_eid));
     // find the radius of the roundabout
@@ -107,77 +111,6 @@ detail::RoundaboutFlags RoundaboutHandler::getRoundaboutFlags(
     return {on_roundabout, can_enter_roundabout, can_exit_roundabout_separately};
 }
 
-void RoundaboutHandler::invalidateExitAgainstDirection(const NodeID from_nid,
-                                                       const EdgeID via_eid,
-                                                       Intersection &intersection) const
-{
-    const auto &in_edge_class = node_based_graph.GetEdgeData(via_eid).flags;
-    if (in_edge_class.roundabout || in_edge_class.circular)
-        return;
-
-    // Find range in which exits that must be invalidated (shaded areas):
-    //   exit..end   exit..end  begin..exit for ↺ roundabouts
-    // *************************************
-    // * <--.   ^    <--.   /     <--.     *
-    // *     | /         | /░         |    *
-    // *     |/          |v░░      -->|    *
-    // *     |^          |\ ░      ░░░|\   *
-    // *     |░\         |░\░      ░░░| \  *
-    // *  --'░░░\     --'░░░v      --'   v *
-    // *************************************
-    //
-    // begin..exit  begin..exit  exit..end for ↻ roundabouts
-    // *************************************
-    // *  --.░░░^     --.░░░/      --.   ^ *
-    // *     |░/░        |░/       ░░░| /  *
-    // *     |/░░        |v        ░░░|/   *
-    // *     |^░░        |\        -->|    *
-    // *     | \░        | \          |    *
-    // * <--'   \    <--'   v     <--'     *
-    // *************************************
-    bool roundabout_entry_first = false;
-    auto invalidate_from = intersection.end(), invalidate_to = intersection.end();
-    for (auto road = intersection.begin(); road != intersection.end(); ++road)
-    {
-        const auto &edge = node_based_graph.GetEdgeData(road->eid);
-        if (edge.flags.roundabout || edge.flags.circular)
-        {
-            if (edge.reversed)
-            {
-                if (roundabout_entry_first)
-                { // invalidate turns in range exit..end
-                    invalidate_from = road + 1;
-                    invalidate_to = intersection.end();
-                }
-                else
-                { // invalidate turns in range begin..exit
-                    invalidate_from = intersection.begin() + 1;
-                    invalidate_to = road;
-                }
-            }
-            else
-            {
-                roundabout_entry_first = true;
-            }
-        }
-    }
-
-    OSRM_ASSERT(invalidate_from <= invalidate_to, coordinates[from_nid]);
-
-    // Exiting roundabouts at an entry point is technically a data-modelling issue.
-    // This workaround handles cases in which an exit precedes and entry. The resulting
-    // u-turn against the roundabout direction is invalidated.
-    for (; invalidate_from != invalidate_to; ++invalidate_from)
-    {
-        const auto &edge = node_based_graph.GetEdgeData(invalidate_from->eid);
-        if (!edge.flags.roundabout && !edge.flags.circular &&
-            node_based_graph.GetTarget(invalidate_from->eid) != from_nid)
-        {
-            invalidate_from->entry_allowed = false;
-        }
-    }
-}
-
 // If we want to see a roundabout as a turn, the exits have to be distinct enough to be seen a
 // dedicated turns. We are limiting it to four-way intersections with well distinct bearings.
 // All entry/roads and exit roads have to be simple. Not segregated roads.
@@ -215,7 +148,7 @@ bool RoundaboutHandler::qualifiesAsRoundaboutIntersection(
                     continue;
 
                 // there is a single non-roundabout edge
-                const auto src_coordinate = coordinates[node];
+                const auto src_coordinate = node_coordinates[node];
 
                 const auto edge_range = node_based_graph.GetAdjacentEdgeRange(node);
                 const auto number_of_lanes_at_intersection = std::accumulate(
@@ -295,7 +228,8 @@ RoundaboutType RoundaboutHandler::getRoundaboutType(const NodeID nid) const
                     return SPECIAL_EDGEID;
                 }
 
-                if (EMPTY_NAMEID != edge_data.name_id)
+                const auto &edge_name_empty = name_table.GetNameForID(edge_data.name_id).empty();
+                if (!edge_name_empty)
                 {
 
                     const auto announce = [&](unsigned id) {
@@ -306,7 +240,6 @@ RoundaboutType RoundaboutHandler::getRoundaboutType(const NodeID nid) const
                     if (std::all_of(begin(roundabout_name_ids), end(roundabout_name_ids), announce))
                         roundabout_name_ids.insert(edge_data.name_id);
                 }
-
                 continue_edge = edge_id;
             }
             else if (!edge.flags.roundabout && !edge.flags.circular)
@@ -334,11 +267,11 @@ RoundaboutType RoundaboutHandler::getRoundaboutType(const NodeID nid) const
 
     const auto getEdgeLength = [&](const NodeID source_node, EdgeID eid) {
         double length = 0.;
-        auto last_coord = coordinates[source_node];
-        const auto &edge_bucket = compressed_edge_container.GetBucketReference(eid);
+        auto last_coord = node_coordinates[source_node];
+        const auto &edge_bucket = compressed_geometries.GetBucketReference(eid);
         for (const auto &compressed_edge : edge_bucket)
         {
-            const auto next_coord = coordinates[compressed_edge.node_id];
+            const auto next_coord = node_coordinates[compressed_edge.node_id];
             length += util::coordinate_calculation::haversineDistance(last_coord, next_coord);
             last_coord = next_coord;
         }

src/extractor/guidance/segregated_intersection_classification.cpp

@@ -0,0 +1,243 @@
+#include "extractor/guidance/segregated_intersection_classification.hpp"
+#include "extractor/guidance/coordinate_extractor.hpp"
+#include "extractor/node_based_graph_factory.hpp"
+
+#include "util/coordinate_calculation.hpp"
+#include "util/name_table.hpp"
+
+namespace osrm
+{
+namespace extractor
+{
+namespace guidance
+{
+
+struct EdgeInfo
+{
+    NodeID node;
+
+    util::StringView name;
+
+    // 0 - outgoing (forward), 1 - incoming (reverse), 2 - both outgoing and incoming
+    int direction;
+
+    ClassData road_class;
+
+    RoadPriorityClass::Enum road_priority_class;
+
+    struct LessName
+    {
+        bool operator()(EdgeInfo const &e1, EdgeInfo const &e2) const { return e1.name < e2.name; }
+    };
+};
+
+bool IsSegregated(std::vector<EdgeInfo> v1,
+                  std::vector<EdgeInfo> v2,
+                  EdgeInfo const &current,
+                  double edgeLength)
+{
+    if (v1.size() < 2 || v2.size() < 2)
+        return false;
+
+    auto const sort_by_name_fn = [](std::vector<EdgeInfo> &v) {
+        std::sort(v.begin(), v.end(), EdgeInfo::LessName());
+    };
+
+    sort_by_name_fn(v1);
+    sort_by_name_fn(v2);
+
+    // Internal edge with the name should be connected with any other neibour edge with the same
+    // name, e.g. isolated edge with unique name is not segregated.
+    //              b - 'b' road continues here
+    //              |
+    //      - - a - |
+    //              b - segregated edge
+    //      - - a - |
+    if (!current.name.empty())
+    {
+        auto const findNameFn = [&current](std::vector<EdgeInfo> const &v) {
+            return std::binary_search(v.begin(), v.end(), current, EdgeInfo::LessName());
+        };
+
+        if (!findNameFn(v1) && !findNameFn(v2))
+            return false;
+    }
+
+    // set_intersection like routine to get equal result pairs
+    std::vector<std::pair<EdgeInfo const *, EdgeInfo const *>> commons;
+
+    auto i1 = v1.begin();
+    auto i2 = v2.begin();
+
+    while (i1 != v1.end() && i2 != v2.end())
+    {
+        if (i1->name == i2->name)
+        {
+            if (!i1->name.empty())
+                commons.push_back(std::make_pair(&(*i1), &(*i2)));
+
+            ++i1;
+            ++i2;
+        }
+        else if (i1->name < i2->name)
+            ++i1;
+        else
+            ++i2;
+    }
+
+    if (commons.size() < 2)
+        return false;
+
+    auto const check_equal_class = [](std::pair<EdgeInfo const *, EdgeInfo const *> const &e) {
+        // Or (e.first->road_class & e.second->road_class != 0)
+        return e.first->road_class == e.second->road_class;
+    };
+
+    size_t equal_class_count = 0;
+    for (auto const &e : commons)
+        if (check_equal_class(e))
+            ++equal_class_count;
+
+    if (equal_class_count < 2)
+        return false;
+
+    auto const get_length_threshold = [](EdgeInfo const *e) {
+        switch (e->road_priority_class)
+        {
+        case RoadPriorityClass::MOTORWAY:
+        case RoadPriorityClass::TRUNK:
+            return 30.0;
+        case RoadPriorityClass::PRIMARY:
+            return 20.0;
+        case RoadPriorityClass::SECONDARY:
+        case RoadPriorityClass::TERTIARY:
+            return 10.0;
+        default:
+            return 5.0;
+        }
+    };
+
+    double threshold = std::numeric_limits<double>::max();
+    for (auto const &e : commons)
+        threshold =
+            std::min(threshold, get_length_threshold(e.first) + get_length_threshold(e.second));
+
+    return edgeLength <= threshold;
+}
+
+std::unordered_set<EdgeID> findSegregatedNodes(const NodeBasedGraphFactory &factory,
+                                               const util::NameTable &names)
+{
+
+    auto const &graph = factory.GetGraph();
+    auto const &annotation = factory.GetAnnotationData();
+
+    CoordinateExtractor coordExtractor(
+        graph, factory.GetCompressedEdges(), factory.GetCoordinates());
+
+    auto const get_edge_length = [&](NodeID from_node, EdgeID edgeID, NodeID to_node) {
+        auto const geom = coordExtractor.GetCoordinatesAlongRoad(from_node, edgeID, false, to_node);
+        double length = 0.0;
+        for (size_t i = 1; i < geom.size(); ++i)
+        {
+            length += util::coordinate_calculation::haversineDistance(geom[i - 1], geom[i]);
+        }
+        return length;
+    };
+
+    auto const get_edge_info = [&](NodeID node, auto const &edgeData) -> EdgeInfo {
+        /// @todo Make string normalization/lowercase/trim for comparison ...
+
+        auto const id = annotation[edgeData.annotation_data].name_id;
+        BOOST_ASSERT(id != INVALID_NAMEID);
+        auto const name = names.GetNameForID(id);
+
+        return {node,
+                name,
+                edgeData.reversed ? 1 : 0,
+                annotation[edgeData.annotation_data].classes,
+                edgeData.flags.road_classification.GetClass()};
+    };
+
+    auto const collect_edge_info_fn = [&](auto const &edges1, NodeID node2) {
+        std::vector<EdgeInfo> info;
+
+        for (auto const &e : edges1)
+        {
+            NodeID const target = graph.GetTarget(e);
+            if (target == node2)
+                continue;
+
+            info.push_back(get_edge_info(target, graph.GetEdgeData(e)));
+        }
+
+        if (info.empty())
+            return info;
+
+        std::sort(info.begin(), info.end(), [](EdgeInfo const &e1, EdgeInfo const &e2) {
+            return e1.node < e2.node;
+        });
+
+        // Merge equal infos with correct direction.
+        auto curr = info.begin();
+        auto next = curr;
+        while (++next != info.end())
+        {
+            if (curr->node == next->node)
+            {
+                BOOST_ASSERT(curr->name == next->name);
+                BOOST_ASSERT(curr->road_class == next->road_class);
+                BOOST_ASSERT(curr->direction != next->direction);
+                curr->direction = 2;
+            }
+            else
+                curr = next;
+        }
+
+        info.erase(
+            std::unique(info.begin(),
+                        info.end(),
+                        [](EdgeInfo const &e1, EdgeInfo const &e2) { return e1.node == e2.node; }),
+            info.end());
+
+        return info;
+    };
+
+    auto const isSegregatedFn = [&](auto const &edgeData,
+                                    auto const &edges1,
+                                    NodeID node1,
+                                    auto const &edges2,
+                                    NodeID node2,
+                                    double edgeLength) {
+        return IsSegregated(collect_edge_info_fn(edges1, node2),
+                            collect_edge_info_fn(edges2, node1),
+                            get_edge_info(node1, edgeData),
+                            edgeLength);
+    };
+
+    std::unordered_set<EdgeID> segregated_edges;
+
+    for (NodeID sourceID = 0; sourceID < graph.GetNumberOfNodes(); ++sourceID)
+    {
+        auto const sourceEdges = graph.GetAdjacentEdgeRange(sourceID);
+        for (EdgeID edgeID : sourceEdges)
+        {
+            auto const &edgeData = graph.GetEdgeData(edgeID);
+
+            if (edgeData.reversed)
+                continue;
+
+            NodeID const targetID = graph.GetTarget(edgeID);
+            auto const targetEdges = graph.GetAdjacentEdgeRange(targetID);
+
+            double const length = get_edge_length(sourceID, edgeID, targetID);
+            if (isSegregatedFn(edgeData, sourceEdges, sourceID, targetEdges, targetID, length))
+                segregated_edges.insert(edgeID);
+        }
+    }
+
+    return segregated_edges;
+}
+}
+}
+}

src/extractor/guidance/sliproad_handler.cpp

@@ -1,5 +1,6 @@
 #include "extractor/guidance/sliproad_handler.hpp"
 #include "extractor/guidance/constants.hpp"
+#include "util/assert.hpp"
 #include "util/bearing.hpp"
 #include "util/coordinate_calculation.hpp"
 #include "util/guidance/name_announcements.hpp"
@@ -21,18 +22,25 @@ namespace extractor
 namespace guidance
 {
 
-SliproadHandler::SliproadHandler(const IntersectionGenerator &intersection_generator,
-                                 const util::NodeBasedDynamicGraph &node_based_graph,
+SliproadHandler::SliproadHandler(const util::NodeBasedDynamicGraph &node_based_graph,
                                  const EdgeBasedNodeDataContainer &node_data_container,
-                                 const std::vector<util::Coordinate> &coordinates,
+                                 const std::vector<util::Coordinate> &node_coordinates,
+                                 const extractor::CompressedEdgeContainer &compressed_geometries,
+                                 const RestrictionMap &node_restriction_map,
+                                 const std::unordered_set<NodeID> &barrier_nodes,
+                                 const guidance::TurnLanesIndexedArray &turn_lanes_data,
                                  const util::NameTable &name_table,
                                  const SuffixTable &street_name_suffix_table)
     : IntersectionHandler(node_based_graph,
                           node_data_container,
-                          coordinates,
+                          node_coordinates,
+                          compressed_geometries,
+                          node_restriction_map,
+                          barrier_nodes,
+                          turn_lanes_data,
                           name_table,
-                          street_name_suffix_table,
-                          intersection_generator)
+                          street_name_suffix_table),
+      coordinate_extractor(node_based_graph, compressed_geometries, node_coordinates)
 {
 }
 
@@ -242,7 +250,14 @@ operator()(const NodeID /*nid*/, const EdgeID source_edge_id, Intersection inter
 
         // Starting out at the intersection and going onto the Sliproad we skip artificial
         // degree two intersections and limit the max hop count in doing so.
-        IntersectionFinderAccumulator intersection_finder{10, intersection_generator};
+        IntersectionFinderAccumulator intersection_finder{10,
+                                                          node_based_graph,
+                                                          node_data_container,
+                                                          node_coordinates,
+                                                          compressed_geometries,
+                                                          node_restriction_map,
+                                                          barrier_nodes,
+                                                          turn_lanes_data};
         const SkipTrafficSignalBarrierRoadSelector road_selector{};
         (void)graph_walker.TraverseRoad(intersection_node_id, // start node
                                         sliproad_edge,        // onto edge
@@ -371,8 +386,6 @@ operator()(const NodeID /*nid*/, const EdgeID source_edge_id, Intersection inter
         //
         //                    Sliproad           Not a Sliproad
         {
-            const auto &coordinate_extractor = intersection_generator.GetCoordinateExtractor();
-
             const NodeID start = intersection_node_id; // b
             const EdgeID edge = sliproad_edge;         // bd
 
@@ -423,8 +436,8 @@ operator()(const NodeID /*nid*/, const EdgeID source_edge_id, Intersection inter
             // Only check for curvature and ~90 degree when it makes sense to do so.
             const constexpr auto MIN_LENGTH = 3.;
 
-            const auto length = haversineDistance(coordinates[intersection_node_id],
-                                                  coordinates[main_road_intersection->node]);
+            const auto length = haversineDistance(node_coordinates[intersection_node_id],
+                                                  node_coordinates[main_road_intersection->node]);
 
             const double minimal_crossroad_angle_of_intersection = 40.;
 
@@ -474,10 +487,7 @@ operator()(const NodeID /*nid*/, const EdgeID source_edge_id, Intersection inter
 
             // Name mismatch: check roads at `c` and `d` for same name
             const auto name_mismatch = [&](const NameID road_name_id) {
-                const auto unnamed = road_name_id == EMPTY_NAMEID;
-
-                return unnamed ||
-                       util::guidance::requiresNameAnnounced(road_name_id,              //
+                return util::guidance::requiresNameAnnounced(road_name_id,              //
                                                              candidate_data.name_id,    //
                                                              name_table,                //
                                                              street_name_suffix_table); //
@@ -499,11 +509,15 @@ operator()(const NodeID /*nid*/, const EdgeID source_edge_id, Intersection inter
                 node_data_container
                     .GetAnnotation(node_based_graph.GetEdgeData(main_road.eid).annotation_data)
                     .name_id;
+            const auto main_road_name_empty = name_table.GetNameForID(main_road_name_id).empty();
             const auto &sliproad_annotation =
                 node_data_container.GetAnnotation(sliproad_edge_data.annotation_data);
+            const auto sliproad_name_empty =
+                name_table.GetNameForID(sliproad_annotation.name_id).empty();
+            const auto candidate_road_name_empty =
+                name_table.GetNameForID(candidate_data.name_id).empty();
             if (!sliproad_edge_data.flags.road_classification.IsLinkClass() &&
-                sliproad_annotation.name_id != EMPTY_NAMEID && main_road_name_id != EMPTY_NAMEID &&
-                candidate_data.name_id != EMPTY_NAMEID &&
+                !sliproad_name_empty && !main_road_name_empty && !candidate_road_name_empty &&
                 util::guidance::requiresNameAnnounced(main_road_name_id,
                                                       sliproad_annotation.name_id,
                                                       name_table,
@@ -544,8 +558,15 @@ operator()(const NodeID /*nid*/, const EdgeID source_edge_id, Intersection inter
             }
             else
             {
-                const auto skip_traffic_light_intersection = intersection_generator(
-                    node_based_graph.GetTarget(sliproad_edge), candidate_road.eid);
+                const auto skip_traffic_light_intersection = intersection::getConnectedRoads<false>(
+                    node_based_graph,
+                    node_data_container,
+                    node_coordinates,
+                    compressed_geometries,
+                    node_restriction_map,
+                    barrier_nodes,
+                    turn_lanes_data,
+                    {node_based_graph.GetTarget(sliproad_edge), candidate_road.eid});
                 if (skip_traffic_light_intersection.isTrafficSignalOrBarrier() &&
                     node_based_graph.GetTarget(skip_traffic_light_intersection[1].eid) ==
                         main_road_intersection->node)
@@ -575,7 +596,7 @@ operator()(const NodeID /*nid*/, const EdgeID source_edge_id, Intersection inter
             intersection[*obvious].instruction.direction_modifier =
                 getTurnDirection(intersection[*obvious].angle);
         }
-        else if (main_annotation.name_id != EMPTY_NAMEID)
+        else if (!name_table.GetNameForID(main_annotation.name_id).empty())
         {
             intersection[*obvious].instruction.type = TurnType::NewName;
             intersection[*obvious].instruction.direction_modifier =
@@ -654,8 +675,6 @@ bool SliproadHandler::nextIntersectionIsTooFarAway(const NodeID start, const Edg
     BOOST_ASSERT(start != SPECIAL_NODEID);
     BOOST_ASSERT(onto != SPECIAL_EDGEID);
 
-    const auto &coordinate_extractor = intersection_generator.GetCoordinateExtractor();
-
     // Base max distance threshold on the current road class we're on
     const auto &data = node_based_graph.GetEdgeData(onto).flags;
     const auto threshold = scaledThresholdByRoadClass(MAX_SLIPROAD_THRESHOLD, // <- scales down
@@ -726,9 +745,9 @@ bool SliproadHandler::isValidSliproadArea(const double max_area,
 {
     using namespace util::coordinate_calculation;
 
-    const auto first = coordinates[a];
-    const auto second = coordinates[b];
-    const auto third = coordinates[c];
+    const auto first = node_coordinates[a];
+    const auto second = node_coordinates[b];
+    const auto third = node_coordinates[c];
 
     const auto length = haversineDistance(first, second);
     const auto heigth = haversineDistance(second, third);

src/extractor/guidance/suppress_mode_handler.cpp

@@ -11,18 +11,25 @@ namespace extractor
 namespace guidance
 {
 
-SuppressModeHandler::SuppressModeHandler(const IntersectionGenerator &intersection_generator,
-                                         const util::NodeBasedDynamicGraph &node_based_graph,
-                                         const EdgeBasedNodeDataContainer &node_data_container,
-                                         const std::vector<util::Coordinate> &coordinates,
-                                         const util::NameTable &name_table,
-                                         const SuffixTable &street_name_suffix_table)
+SuppressModeHandler::SuppressModeHandler(
+    const util::NodeBasedDynamicGraph &node_based_graph,
+    const EdgeBasedNodeDataContainer &node_data_container,
+    const std::vector<util::Coordinate> &coordinates,
+    const extractor::CompressedEdgeContainer &compressed_geometries,
+    const RestrictionMap &node_restriction_map,
+    const std::unordered_set<NodeID> &barrier_nodes,
+    const guidance::TurnLanesIndexedArray &turn_lanes_data,
+    const util::NameTable &name_table,
+    const SuffixTable &street_name_suffix_table)
     : IntersectionHandler(node_based_graph,
                           node_data_container,
                           coordinates,
+                          compressed_geometries,
+                          node_restriction_map,
+                          barrier_nodes,
+                          turn_lanes_data,
                           name_table,
-                          street_name_suffix_table,
-                          intersection_generator)
+                          street_name_suffix_table)
 {
 }
 

src/extractor/guidance/turn_analysis.cpp

@@ -23,89 +23,79 @@ using EdgeData = util::NodeBasedDynamicGraph::EdgeData;
 
 TurnAnalysis::TurnAnalysis(const util::NodeBasedDynamicGraph &node_based_graph,
                            const EdgeBasedNodeDataContainer &node_data_container,
-                           const std::vector<util::Coordinate> &coordinates,
+                           const std::vector<util::Coordinate> &node_coordinates,
+                           const CompressedEdgeContainer &compressed_edge_container,
                            const RestrictionMap &restriction_map,
                            const std::unordered_set<NodeID> &barrier_nodes,
-                           const CompressedEdgeContainer &compressed_edge_container,
+                           const guidance::TurnLanesIndexedArray &turn_lanes_data,
                            const util::NameTable &name_table,
                            const SuffixTable &street_name_suffix_table)
-    : node_based_graph(node_based_graph), intersection_generator(node_based_graph,
-                                                                 node_data_container,
-                                                                 restriction_map,
-                                                                 barrier_nodes,
-                                                                 coordinates,
-                                                                 compressed_edge_container),
-      intersection_normalizer(node_based_graph,
-                              node_data_container,
-                              coordinates,
-                              name_table,
-                              street_name_suffix_table,
-                              intersection_generator),
-      roundabout_handler(node_based_graph,
-                         node_data_container,
-                         coordinates,
-                         compressed_edge_container,
-                         name_table,
-                         street_name_suffix_table,
-                         intersection_generator),
+    : node_based_graph(node_based_graph), roundabout_handler(node_based_graph,
+                                                             node_data_container,
+                                                             node_coordinates,
+                                                             compressed_edge_container,
+                                                             restriction_map,
+                                                             barrier_nodes,
+                                                             turn_lanes_data,
+                                                             name_table,
+                                                             street_name_suffix_table),
       motorway_handler(node_based_graph,
                        node_data_container,
-
-                       coordinates,
+                       node_coordinates,
+                       compressed_edge_container,
+                       restriction_map,
+                       barrier_nodes,
+                       turn_lanes_data,
                        name_table,
-                       street_name_suffix_table,
-                       intersection_generator),
+                       street_name_suffix_table),
       turn_handler(node_based_graph,
                    node_data_container,
-                   coordinates,
+                   node_coordinates,
+                   compressed_edge_container,
+                   restriction_map,
+                   barrier_nodes,
+                   turn_lanes_data,
                    name_table,
-                   street_name_suffix_table,
-                   intersection_generator),
-      sliproad_handler(intersection_generator,
-                       node_based_graph,
+                   street_name_suffix_table),
+      sliproad_handler(node_based_graph,
                        node_data_container,
-                       coordinates,
+                       node_coordinates,
+                       compressed_edge_container,
+                       restriction_map,
+                       barrier_nodes,
+                       turn_lanes_data,
                        name_table,
                        street_name_suffix_table),
-      suppress_mode_handler(intersection_generator,
-                            node_based_graph,
+      suppress_mode_handler(node_based_graph,
                             node_data_container,
-                            coordinates,
+                            node_coordinates,
+                            compressed_edge_container,
+                            restriction_map,
+                            barrier_nodes,
+                            turn_lanes_data,
                             name_table,
                             street_name_suffix_table),
-      driveway_handler(intersection_generator,
-                       node_based_graph,
+      driveway_handler(node_based_graph,
                        node_data_container,
-                       coordinates,
+                       node_coordinates,
+                       compressed_edge_container,
+                       restriction_map,
+                       barrier_nodes,
+                       turn_lanes_data,
                        name_table,
                        street_name_suffix_table),
-      statistics_handler(intersection_generator,
-                         node_based_graph,
+      statistics_handler(node_based_graph,
                          node_data_container,
-                         coordinates,
+                         node_coordinates,
+                         compressed_edge_container,
+                         restriction_map,
+                         barrier_nodes,
+                         turn_lanes_data,
                          name_table,
                          street_name_suffix_table)
 {
 }
 
-Intersection TurnAnalysis::operator()(const NodeID node_prior_to_intersection,
-                                      const EdgeID entering_via_edge) const
-{
-    TurnAnalysis::ShapeResult shape_result =
-        ComputeIntersectionShapes(node_based_graph.GetTarget(entering_via_edge));
-
-    // assign valid flags to normalized_shape
-    const auto intersection_view = intersection_generator.TransformIntersectionShapeIntoView(
-        node_prior_to_intersection,
-        entering_via_edge,
-        shape_result.annotated_normalized_shape.normalized_shape,
-        shape_result.intersection_shape,
-        shape_result.annotated_normalized_shape.performed_merges);
-
-    // assign the turn types to the intersection
-    return AssignTurnTypes(node_prior_to_intersection, entering_via_edge, intersection_view);
-}
-
 Intersection TurnAnalysis::AssignTurnTypes(const NodeID node_prior_to_intersection,
                                            const EdgeID entering_via_edge,
                                            const IntersectionView &intersection_view) const
@@ -191,19 +181,6 @@ Intersection TurnAnalysis::AssignTurnTypes(const NodeID node_prior_to_intersecti
     return intersection;
 }
 
-TurnAnalysis::ShapeResult
-TurnAnalysis::ComputeIntersectionShapes(const NodeID node_at_center_of_intersection) const
-{
-    ShapeResult intersection_shape;
-    intersection_shape.intersection_shape =
-        intersection_generator.ComputeIntersectionShape(node_at_center_of_intersection);
-
-    intersection_shape.annotated_normalized_shape = intersection_normalizer(
-        node_at_center_of_intersection, intersection_shape.intersection_shape);
-
-    return intersection_shape;
-}
-
 // Sets basic turn types as fallback for otherwise unhandled turns
 Intersection TurnAnalysis::setTurnTypes(const NodeID node_prior_to_intersection,
                                         const EdgeID,
@@ -225,11 +202,6 @@ Intersection TurnAnalysis::setTurnTypes(const NodeID node_prior_to_intersection,
     return intersection;
 }
 
-const IntersectionGenerator &TurnAnalysis::GetIntersectionGenerator() const
-{
-    return intersection_generator;
-}
-
 } // namespace guidance
 } // namespace extractor
 } // namespace osrm

src/extractor/guidance/turn_discovery.cpp

@@ -1,5 +1,7 @@
 #include "extractor/guidance/turn_discovery.hpp"
 #include "extractor/guidance/constants.hpp"
+#include "extractor/guidance/coordinate_extractor.hpp"
+#include "extractor/intersection/intersection_analysis.hpp"
 #include "util/bearing.hpp"
 #include "util/coordinate_calculation.hpp"
 
@@ -14,16 +16,16 @@ namespace guidance
 namespace lanes
 {
 
-namespace
-{
-const constexpr bool USE_LOW_PRECISION_MODE = true;
-}
-
 bool findPreviousIntersection(const NodeID node_v,
                               const EdgeID via_edge,
                               const Intersection &intersection,
-                              const IntersectionGenerator &intersection_generator,
                               const util::NodeBasedDynamicGraph &node_based_graph,
+                              const EdgeBasedNodeDataContainer &node_data_container,
+                              const std::vector<util::Coordinate> &node_coordinates,
+                              const extractor::CompressedEdgeContainer &compressed_geometries,
+                              const RestrictionMap &node_restriction_map,
+                              const std::unordered_set<NodeID> &barrier_nodes,
+                              const guidance::TurnLanesIndexedArray &turn_lanes_data,
                               // output parameters
                               NodeID &result_node,
                               EdgeID &result_via_edge,
@@ -43,7 +45,9 @@ bool findPreviousIntersection(const NodeID node_v,
      */
     const constexpr double COMBINE_DISTANCE_CUTOFF = 30;
 
-    const auto coordinate_extractor = intersection_generator.GetCoordinateExtractor();
+    const CoordinateExtractor coordinate_extractor(
+        node_based_graph, compressed_geometries, node_coordinates);
+
     const auto coordinates_along_via_edge =
         coordinate_extractor.GetForwardCoordinatesAlongRoad(node_v, via_edge);
     const auto via_edge_length =
@@ -71,7 +75,14 @@ bool findPreviousIntersection(const NodeID node_v,
         return false;
 
     const auto node_v_reverse_intersection =
-        intersection_generator.GetConnectedRoads(node_w, u_turn_at_node_w, USE_LOW_PRECISION_MODE);
+        intersection::getConnectedRoads<true>(node_based_graph,
+                                              node_data_container,
+                                              node_coordinates,
+                                              compressed_geometries,
+                                              node_restriction_map,
+                                              barrier_nodes,
+                                              turn_lanes_data,
+                                              {node_w, u_turn_at_node_w});
     // Continue along the straightmost turn. If there is no straight turn, we cannot find a valid
     // previous intersection.
     const auto straightmost_at_v_in_reverse =
@@ -83,8 +94,15 @@ bool findPreviousIntersection(const NodeID node_v,
         return false;
 
     const auto node_u = node_based_graph.GetTarget(straightmost_at_v_in_reverse->eid);
-    const auto node_u_reverse_intersection = intersection_generator.GetConnectedRoads(
-        node_v, straightmost_at_v_in_reverse->eid, USE_LOW_PRECISION_MODE);
+    const auto node_u_reverse_intersection =
+        intersection::getConnectedRoads<true>(node_based_graph,
+                                              node_data_container,
+                                              node_coordinates,
+                                              compressed_geometries,
+                                              node_restriction_map,
+                                              barrier_nodes,
+                                              turn_lanes_data,
+                                              {node_v, straightmost_at_v_in_reverse->eid});
 
     // now check that the u-turn at the given intersection connects to via-edge
     // The u-turn at the now found intersection should, hopefully, represent the previous edge.
@@ -102,7 +120,14 @@ bool findPreviousIntersection(const NodeID node_v,
         return false;
     }
 
-    result_intersection = intersection_generator(node_u, result_via_edge);
+    result_intersection = intersection::getConnectedRoads<false>(node_based_graph,
+                                                                 node_data_container,
+                                                                 node_coordinates,
+                                                                 compressed_geometries,
+                                                                 node_restriction_map,
+                                                                 barrier_nodes,
+                                                                 turn_lanes_data,
+                                                                 {node_u, result_via_edge});
     const auto check_via_edge =
         result_intersection.end() !=
         std::find_if(result_intersection.begin(),

src/extractor/guidance/turn_handler.cpp

@@ -113,15 +113,21 @@ std::size_t TurnHandler::Fork::getLeftIndex() const
 TurnHandler::TurnHandler(const util::NodeBasedDynamicGraph &node_based_graph,
                          const EdgeBasedNodeDataContainer &node_data_container,
                          const std::vector<util::Coordinate> &coordinates,
+                         const extractor::CompressedEdgeContainer &compressed_geometries,
+                         const RestrictionMap &node_restriction_map,
+                         const std::unordered_set<NodeID> &barrier_nodes,
+                         const guidance::TurnLanesIndexedArray &turn_lanes_data,
                          const util::NameTable &name_table,
-                         const SuffixTable &street_name_suffix_table,
-                         const IntersectionGenerator &intersection_generator)
+                         const SuffixTable &street_name_suffix_table)
     : IntersectionHandler(node_based_graph,
                           node_data_container,
                           coordinates,
+                          compressed_geometries,
+                          node_restriction_map,
+                          barrier_nodes,
+                          turn_lanes_data,
                           name_table,
-                          street_name_suffix_table,
-                          intersection_generator)
+                          street_name_suffix_table)
 {
 }
 
@@ -199,7 +205,8 @@ bool TurnHandler::isObviousOfTwo(const EdgeID via_edge,
 
     const bool turn_is_perfectly_straight =
         angularDeviation(road.angle, STRAIGHT_ANGLE) < std::numeric_limits<double>::epsilon();
-    if (via_data.name_id != EMPTY_NAMEID)
+    const auto &via_name_empty = name_table.GetNameForID(via_data.name_id).empty();
+    if (!via_name_empty)
     {
         const auto same_name = !util::guidance::requiresNameAnnounced(
             via_data.name_id, road_data.name_id, name_table, street_name_suffix_table);

src/extractor/guidance/turn_lane_handler.cpp

@@ -3,6 +3,7 @@
 #include "extractor/guidance/turn_discovery.hpp"
 #include "extractor/guidance/turn_lane_augmentation.hpp"
 #include "extractor/guidance/turn_lane_matcher.hpp"
+#include "extractor/intersection/intersection_analysis.hpp"
 #include "util/bearing.hpp"
 #include "util/log.hpp"
 #include "util/typedefs.hpp"
@@ -35,14 +36,21 @@ std::size_t getNumberOfTurns(const Intersection &intersection)
 
 TurnLaneHandler::TurnLaneHandler(const util::NodeBasedDynamicGraph &node_based_graph,
                                  const EdgeBasedNodeDataContainer &node_data_container,
+                                 const std::vector<util::Coordinate> &node_coordinates,
+                                 const extractor::CompressedEdgeContainer &compressed_geometries,
+                                 const RestrictionMap &node_restriction_map,
+                                 const std::unordered_set<NodeID> &barrier_nodes,
+                                 const guidance::TurnLanesIndexedArray &turn_lanes_data,
                                  LaneDescriptionMap &lane_description_map,
                                  const TurnAnalysis &turn_analysis,
                                  util::guidance::LaneDataIdMap &id_map)
     : node_based_graph(node_based_graph), node_data_container(node_data_container),
-      lane_description_map(lane_description_map), turn_analysis(turn_analysis), id_map(id_map)
+      node_coordinates(node_coordinates), compressed_geometries(compressed_geometries),
+      node_restriction_map(node_restriction_map), barrier_nodes(barrier_nodes),
+      turn_lanes_data(turn_lanes_data), lane_description_map(lane_description_map),
+      turn_analysis(turn_analysis), id_map(id_map)
 {
-    std::tie(turn_lane_offsets, turn_lane_masks) =
-        transformTurnLaneMapIntoArrays(lane_description_map);
+    std::tie(turn_lane_offsets, turn_lane_masks) = turn_lanes_data;
     count_handled = count_called = 0;
 }
 
@@ -205,8 +213,13 @@ TurnLaneScenario TurnLaneHandler::deduceScenario(const NodeID at,
     if (findPreviousIntersection(at,
                                  via_edge,
                                  intersection,
-                                 turn_analysis.GetIntersectionGenerator(),
                                  node_based_graph,
+                                 node_data_container,
+                                 node_coordinates,
+                                 compressed_geometries,
+                                 node_restriction_map,
+                                 barrier_nodes,
+                                 turn_lanes_data,
                                  previous_node,
                                  previous_via_edge,
                                  previous_intersection_view))
@@ -560,7 +573,16 @@ std::pair<LaneDataVector, LaneDataVector> TurnLaneHandler::partitionLaneData(
     // find out about the next intersection. To check for valid matches, we also need the turn
     // types. We can skip merging/angle adjustments, though
     const auto next_intersection = turn_analysis.AssignTurnTypes(
-        at, straightmost->eid, turn_analysis.GetIntersectionGenerator()(at, straightmost->eid));
+        at,
+        straightmost->eid,
+        intersection::getConnectedRoads<false>(node_based_graph,
+                                               node_data_container,
+                                               node_coordinates,
+                                               compressed_geometries,
+                                               node_restriction_map,
+                                               barrier_nodes,
+                                               turn_lanes_data,
+                                               {at, straightmost->eid}));
 
     // check where we can match turn lanes
     std::size_t straightmost_tag_index = turn_lane_data.size();

src/extractor/guidance/turn_lane_matcher.cpp

@@ -228,7 +228,6 @@ Intersection triviallyMatchLanesToTurns(Intersection intersection,
                 u_turn = 1;
                 road_index = 2;
             }
-            intersection[u_turn].entry_allowed = true;
             intersection[u_turn].instruction.type = TurnType::Continue;
             intersection[u_turn].instruction.direction_modifier = DirectionModifier::UTurn;
 
@@ -268,7 +267,6 @@ Intersection triviallyMatchLanesToTurns(Intersection intersection,
             }
             u_turn = intersection.size() - 1;
         }
-        intersection[u_turn].entry_allowed = true;
         intersection[u_turn].instruction.type = TurnType::Continue;
         intersection[u_turn].instruction.direction_modifier = DirectionModifier::UTurn;
 

src/extractor/intersection/intersection_analysis.cpp

@@ -0,0 +1,841 @@
+#include "extractor/intersection/intersection_analysis.hpp"
+
+#include "util/assert.hpp"
+#include "util/bearing.hpp"
+#include "util/coordinate_calculation.hpp"
+
+#include "extractor/guidance/coordinate_extractor.hpp"
+
+#include <boost/optional/optional_io.hpp>
+
+namespace osrm
+{
+namespace extractor
+{
+namespace intersection
+{
+
+IntersectionEdges getIncomingEdges(const util::NodeBasedDynamicGraph &graph,
+                                   const NodeID intersection_node)
+{
+    IntersectionEdges result;
+
+    for (const auto outgoing_edge : graph.GetAdjacentEdgeRange(intersection_node))
+    {
+        const auto from_node = graph.GetTarget(outgoing_edge);
+        const auto incoming_edge = graph.FindEdge(from_node, intersection_node);
+
+        if (!graph.GetEdgeData(incoming_edge).reversed)
+        {
+            result.push_back({from_node, incoming_edge});
+        }
+    }
+
+    // Enforce ordering of incoming edges
+    std::sort(result.begin(), result.end());
+    return result;
+}
+
+IntersectionEdges getOutgoingEdges(const util::NodeBasedDynamicGraph &graph,
+                                   const NodeID intersection_node)
+{
+    IntersectionEdges result;
+
+    for (const auto outgoing_edge : graph.GetAdjacentEdgeRange(intersection_node))
+    {
+        result.push_back({intersection_node, outgoing_edge});
+    }
+
+    BOOST_ASSERT(std::is_sorted(result.begin(), result.end()));
+    return result;
+}
+
+std::vector<util::Coordinate>
+getEdgeCoordinates(const extractor::CompressedEdgeContainer &compressed_geometries,
+                   const std::vector<util::Coordinate> &node_coordinates,
+                   const NodeID from_node,
+                   const EdgeID edge,
+                   const NodeID to_node)
+{
+    if (!compressed_geometries.HasEntryForID(edge))
+        return {node_coordinates[from_node], node_coordinates[to_node]};
+
+    BOOST_ASSERT(from_node < node_coordinates.size());
+    BOOST_ASSERT(to_node < node_coordinates.size());
+
+    // extracts the geometry in coordinates from the compressed edge container
+    std::vector<util::Coordinate> result;
+    const auto &geometry = compressed_geometries.GetBucketReference(edge);
+    result.reserve(geometry.size() + 1);
+
+    result.push_back(node_coordinates[from_node]);
+    std::transform(geometry.begin(),
+                   geometry.end(),
+                   std::back_inserter(result),
+                   [&node_coordinates](const auto &compressed_edge) {
+                       return node_coordinates[compressed_edge.node_id];
+                   });
+
+    // filter duplicated coordinates
+    result.erase(std::unique(result.begin(), result.end()), result.end());
+    return result;
+}
+
+namespace
+{
+double findAngleBisector(double alpha, double beta)
+{
+    alpha *= M_PI / 180.;
+    beta *= M_PI / 180.;
+    const auto average =
+        180. * std::atan2(std::sin(alpha) + std::sin(beta), std::cos(alpha) + std::cos(beta)) /
+        M_PI;
+    return std::fmod(average + 360., 360.);
+}
+
+double findClosestOppositeBearing(const IntersectionEdgeGeometries &edge_geometries,
+                                  const double bearing)
+{
+    BOOST_ASSERT(!edge_geometries.empty());
+    const auto min = std::min_element(
+        edge_geometries.begin(),
+        edge_geometries.end(),
+        [bearing = util::bearing::reverse(bearing)](const auto &lhs, const auto &rhs) {
+            return util::angularDeviation(lhs.perceived_bearing, bearing) <
+                   util::angularDeviation(rhs.perceived_bearing, bearing);
+        });
+    return util::bearing::reverse(min->perceived_bearing);
+}
+
+std::pair<bool, double> findMergedBearing(const util::NodeBasedDynamicGraph &graph,
+                                          const IntersectionEdgeGeometries &edge_geometries,
+                                          std::size_t lhs_index,
+                                          std::size_t rhs_index,
+                                          bool neighbor_intersection)
+{
+    // Function returns a pair with a flag and a value of bearing for merged roads
+    // If the flag is false the bearing must not be used as a merged value at neighbor intersections
+
+    using guidance::STRAIGHT_ANGLE;
+    using guidance::MAXIMAL_ALLOWED_NO_TURN_DEVIATION;
+    using util::bearing::angleBetween;
+    using util::angularDeviation;
+
+    const auto &lhs = edge_geometries[lhs_index];
+    const auto &rhs = edge_geometries[rhs_index];
+    BOOST_ASSERT(graph.GetEdgeData(lhs.edge).reversed != graph.GetEdgeData(rhs.edge).reversed);
+
+    const auto &entry = graph.GetEdgeData(lhs.edge).reversed ? rhs : lhs;
+    const auto opposite_bearing =
+        findClosestOppositeBearing(edge_geometries, entry.perceived_bearing);
+    const auto merged_bearing = findAngleBisector(rhs.perceived_bearing, lhs.perceived_bearing);
+
+    if (angularDeviation(angleBetween(opposite_bearing, entry.perceived_bearing), STRAIGHT_ANGLE) <
+        MAXIMAL_ALLOWED_NO_TURN_DEVIATION)
+    {
+        // In some intersections, turning roads can introduce artificial turns if we merge here.
+        // Consider a scenario like:
+        // 
+        //  a     .  g - f
+        //  |   .
+        //  | .
+        //  |.
+        // d-b--------e
+        //  |
+        //  c
+        // 
+        // Merging `bgf` and `be` would introduce an angle, even though d-b-e is perfectly straight
+        // We don't change the angle, if such an opposite road exists
+        return {false, entry.perceived_bearing};
+    }
+
+    if (neighbor_intersection)
+    {
+        // Check that the merged bearing makes both turns closer to straight line
+        const auto turn_angle_lhs = angleBetween(opposite_bearing, lhs.perceived_bearing);
+        const auto turn_angle_rhs = angleBetween(opposite_bearing, rhs.perceived_bearing);
+        const auto turn_angle_new = angleBetween(opposite_bearing, merged_bearing);
+
+        if (util::angularDeviation(turn_angle_lhs, STRAIGHT_ANGLE) <
+                util::angularDeviation(turn_angle_new, STRAIGHT_ANGLE) ||
+            util::angularDeviation(turn_angle_rhs, STRAIGHT_ANGLE) <
+                util::angularDeviation(turn_angle_new, STRAIGHT_ANGLE))
+            return {false, opposite_bearing};
+    }
+
+    return {true, merged_bearing};
+}
+
+bool isRoadsPairMergeable(const guidance::MergableRoadDetector &detector,
+                          const IntersectionEdgeGeometries &edge_geometries,
+                          const NodeID intersection_node,
+                          const std::size_t index)
+{
+    const auto size = edge_geometries.size();
+    BOOST_ASSERT(index < size);
+
+    const auto &llhs = edge_geometries[(index + size - 1) % size];
+    const auto &lhs = edge_geometries[index];
+    const auto &rhs = edge_geometries[(index + 1) % size];
+    const auto &rrhs = edge_geometries[(index + 2) % size];
+
+    // TODO: check IsDistinctFrom - it is an angle and name-only check
+    // also check CanMergeRoad for all merging scenarios
+    return detector.IsDistinctFrom({llhs.edge, llhs.perceived_bearing, llhs.length},
+                                   {lhs.edge, lhs.perceived_bearing, lhs.length}) &&
+           detector.CanMergeRoad(intersection_node,
+                                 {lhs.edge, lhs.perceived_bearing, lhs.length},
+                                 {rhs.edge, rhs.perceived_bearing, rhs.length}) &&
+           detector.IsDistinctFrom({rhs.edge, rhs.perceived_bearing, rhs.length},
+                                   {rrhs.edge, rrhs.perceived_bearing, rrhs.length});
+}
+
+auto getIntersectionLanes(const util::NodeBasedDynamicGraph &graph, const NodeID intersection_node)
+{
+    std::uint8_t max_lanes_intersection = 0;
+    for (auto outgoing_edge : graph.GetAdjacentEdgeRange(intersection_node))
+    {
+        max_lanes_intersection =
+            std::max(max_lanes_intersection,
+                     graph.GetEdgeData(outgoing_edge).flags.road_classification.GetNumberOfLanes());
+    }
+    return max_lanes_intersection;
+}
+
+template <bool USE_CLOSE_COORDINATE>
+IntersectionEdgeGeometries
+getIntersectionOutgoingGeometries(const util::NodeBasedDynamicGraph &graph,
+                                  const extractor::CompressedEdgeContainer &compressed_geometries,
+                                  const std::vector<util::Coordinate> &node_coordinates,
+                                  const NodeID intersection_node)
+{
+    IntersectionEdgeGeometries edge_geometries;
+
+    // TODO: keep CoordinateExtractor to reproduce bearings, simplify later
+    const guidance::CoordinateExtractor coordinate_extractor(
+        graph, compressed_geometries, node_coordinates);
+
+    const auto max_lanes_intersection = getIntersectionLanes(graph, intersection_node);
+
+    // Collect outgoing edges
+    for (const auto outgoing_edge : graph.GetAdjacentEdgeRange(intersection_node))
+    {
+        const auto remote_node = graph.GetTarget(outgoing_edge);
+
+        const auto &geometry = getEdgeCoordinates(
+            compressed_geometries, node_coordinates, intersection_node, outgoing_edge, remote_node);
+
+        // OSRM_ASSERT(geometry.size() >= 2, node_coordinates[intersection_node]);
+
+        const auto close_coordinate =
+            coordinate_extractor.ExtractCoordinateAtLength(2. /*m*/, geometry);
+        const auto initial_bearing =
+            util::coordinate_calculation::bearing(geometry[0], close_coordinate);
+
+        const auto representative_coordinate =
+            USE_CLOSE_COORDINATE || graph.GetOutDegree(intersection_node) <= 2
+                ? coordinate_extractor.GetCoordinateCloseToTurn(
+                      intersection_node, outgoing_edge, false, remote_node)
+                : coordinate_extractor.ExtractRepresentativeCoordinate(intersection_node,
+                                                                       outgoing_edge,
+                                                                       false,
+                                                                       remote_node,
+                                                                       max_lanes_intersection,
+                                                                       geometry);
+        const auto perceived_bearing =
+            util::coordinate_calculation::bearing(geometry[0], representative_coordinate);
+
+        const auto edge_length = util::coordinate_calculation::getLength(
+            geometry.begin(), geometry.end(), util::coordinate_calculation::haversineDistance);
+
+        edge_geometries.push_back({outgoing_edge, initial_bearing, perceived_bearing, edge_length});
+    }
+
+    // Sort edges in the clockwise bearings order
+    std::sort(edge_geometries.begin(), edge_geometries.end(), [](const auto &lhs, const auto &rhs) {
+        return lhs.perceived_bearing < rhs.perceived_bearing;
+    });
+    return edge_geometries;
+}
+}
+
+std::pair<IntersectionEdgeGeometries, std::unordered_set<EdgeID>>
+getIntersectionGeometries(const util::NodeBasedDynamicGraph &graph,
+                          const extractor::CompressedEdgeContainer &compressed_geometries,
+                          const std::vector<util::Coordinate> &node_coordinates,
+                          const guidance::MergableRoadDetector &detector,
+                          const NodeID intersection_node)
+{
+    IntersectionEdgeGeometries edge_geometries = getIntersectionOutgoingGeometries<false>(
+        graph, compressed_geometries, node_coordinates, intersection_node);
+
+    const auto edges_number = edge_geometries.size();
+
+    std::vector<bool> merged_edges(edges_number, false);
+
+    // TODO: intersection views do not contain merged and not allowed edges
+    // but contain other restricted edges that are used in TurnAnalysis,
+    // to be deleted after TurnAnalysis refactoring
+    std::unordered_set<EdgeID> merged_edge_ids;
+
+    if (edges_number >= 3)
+    { // Adjust bearings of mergeable roads
+        for (std::size_t index = 0; index < edges_number; ++index)
+        {
+            if (isRoadsPairMergeable(detector, edge_geometries, intersection_node, index))
+            { // Merge bearings of roads left & right
+                const auto next = (index + 1) % edges_number;
+                auto &lhs = edge_geometries[index];
+                auto &rhs = edge_geometries[next];
+                merged_edges[index] = true;
+                merged_edges[next] = true;
+
+                const auto merge = findMergedBearing(graph, edge_geometries, index, next, false);
+
+                lhs.perceived_bearing = lhs.initial_bearing = merge.second;
+                rhs.perceived_bearing = rhs.initial_bearing = merge.second;
+                merged_edge_ids.insert(lhs.edge);
+                merged_edge_ids.insert(rhs.edge);
+            }
+        }
+    }
+
+    if (edges_number >= 2)
+    { // Adjust bearings of roads that will be merged at the neighbor intersections
+        const double constexpr PRUNING_DISTANCE = 30.;
+
+        for (std::size_t index = 0; index < edges_number; ++index)
+        {
+            auto &edge_geometry = edge_geometries[index];
+
+            // Don't adjust bearings of roads that were merged at the current intersection
+            // or have neighbor intersection farer than the pruning distance
+            if (merged_edges[index] || edge_geometry.length > PRUNING_DISTANCE)
+                continue;
+
+            const auto neighbor_intersection_node = graph.GetTarget(edge_geometry.edge);
+
+            const auto neighbor_geometries = getIntersectionOutgoingGeometries<false>(
+                graph, compressed_geometries, node_coordinates, neighbor_intersection_node);
+
+            const auto neighbor_edges = neighbor_geometries.size();
+            if (neighbor_edges <= 1)
+                continue;
+
+            const auto neighbor_curr = std::distance(
+                neighbor_geometries.begin(),
+                std::find_if(neighbor_geometries.begin(),
+                             neighbor_geometries.end(),
+                             [&graph, &intersection_node](const auto &road) {
+                                 return graph.GetTarget(road.edge) == intersection_node;
+                             }));
+            BOOST_ASSERT(static_cast<std::size_t>(neighbor_curr) != neighbor_geometries.size());
+            const auto neighbor_prev = (neighbor_curr + neighbor_edges - 1) % neighbor_edges;
+            const auto neighbor_next = (neighbor_curr + 1) % neighbor_edges;
+
+            if (isRoadsPairMergeable(
+                    detector, neighbor_geometries, neighbor_intersection_node, neighbor_prev))
+            { // Neighbor intersection has mergable neighbor_prev and neighbor_curr roads
+                BOOST_ASSERT(!isRoadsPairMergeable(
+                    detector, neighbor_geometries, neighbor_intersection_node, neighbor_curr));
+
+                // TODO: merge with an angle bisector, but not a reversed closed turn, to be
+                // checked as a difference with the previous implementation
+                const auto merge = findMergedBearing(
+                    graph, neighbor_geometries, neighbor_prev, neighbor_curr, true);
+
+                if (merge.first)
+                {
+                    const auto offset = util::angularDeviation(
+                        merge.second, neighbor_geometries[neighbor_curr].perceived_bearing);
+
+                    // Adjust bearing of AB at the node A if at the node B roads BA (neighbor_curr)
+                    // and BC (neighbor_prev) will be merged and will have merged bearing Bb.
+                    // The adjustment value is ∠bBA with negative sign (counter-clockwise) to Aa
+                    //     A ~~~ a
+                    //       \ 
+                    //  b --- B ---
+                    //       /
+                    //     C
+                    edge_geometry.perceived_bearing = edge_geometry.initial_bearing =
+                        std::fmod(edge_geometry.perceived_bearing + 360. - offset, 360.);
+                }
+            }
+            else if (isRoadsPairMergeable(
+                         detector, neighbor_geometries, neighbor_intersection_node, neighbor_curr))
+            { // Neighbor intersection has mergable neighbor_curr and neighbor_next roads
+                BOOST_ASSERT(!isRoadsPairMergeable(
+                    detector, neighbor_geometries, neighbor_intersection_node, neighbor_prev));
+
+                // TODO: merge with an angle bisector, but not a reversed closed turn, to be
+                // checked as a difference with the previous implementation
+                const auto merge = findMergedBearing(
+                    graph, neighbor_geometries, neighbor_curr, neighbor_next, true);
+                if (merge.first)
+                {
+                    const auto offset = util::angularDeviation(
+                        merge.second, neighbor_geometries[neighbor_curr].perceived_bearing);
+
+                    // Adjust bearing of AB at the node A if at the node B roads BA (neighbor_curr)
+                    // and BC (neighbor_next) will be merged and will have merged bearing Bb.
+                    // The adjustment value is ∠bBA with positive sign (clockwise) to Aa
+                    //     a ~~~ A
+                    //         /
+                    //    --- B --- b
+                    //         \ 
+                    //          C
+                    edge_geometry.perceived_bearing = edge_geometry.initial_bearing =
+                        std::fmod(edge_geometry.perceived_bearing + offset, 360.);
+                }
+            }
+        }
+    }
+
+    // Add incoming edges with reversed bearings
+    edge_geometries.resize(2 * edges_number);
+    for (std::size_t index = 0; index < edges_number; ++index)
+    {
+        const auto &geometry = edge_geometries[index];
+        const auto remote_node = graph.GetTarget(geometry.edge);
+        const auto incoming_edge = graph.FindEdge(remote_node, intersection_node);
+        edge_geometries[edges_number + index] = {incoming_edge,
+                                                 util::bearing::reverse(geometry.initial_bearing),
+                                                 util::bearing::reverse(geometry.perceived_bearing),
+                                                 geometry.length};
+    }
+
+    // Enforce ordering of edges by IDs
+    std::sort(edge_geometries.begin(), edge_geometries.end());
+
+    return std::make_pair(edge_geometries, merged_edge_ids);
+}
+
+inline auto findEdge(const IntersectionEdgeGeometries &geometries, const EdgeID &edge)
+{
+    const auto it = std::lower_bound(
+        geometries.begin(), geometries.end(), edge, [](const auto &geometry, const auto edge) {
+            return geometry.edge < edge;
+        });
+    BOOST_ASSERT(it != geometries.end() && it->edge == edge);
+    return it;
+}
+
+double findEdgeBearing(const IntersectionEdgeGeometries &geometries, const EdgeID &edge)
+{
+    return findEdge(geometries, edge)->perceived_bearing;
+}
+
+double findEdgeLength(const IntersectionEdgeGeometries &geometries, const EdgeID &edge)
+{
+    return findEdge(geometries, edge)->length;
+}
+
+template <typename RestrictionsRange>
+bool isTurnRestricted(const RestrictionsRange &restrictions, const NodeID to)
+{
+    // Check turn restrictions to find a node that is the only allowed target when coming from a
+    // node to an intersection
+    //     d
+    //     |
+    // a - b - c  and `only_straight_on ab | bc would return `c` for `a,b`
+    const auto is_only = std::find_if(restrictions.first,
+                                      restrictions.second,
+                                      [](const auto &pair) { return pair.second->is_only; });
+    if (is_only != restrictions.second)
+        return is_only->second->AsNodeRestriction().to != to;
+
+    // Check if explicitly forbidden
+    const auto no_turn =
+        std::find_if(restrictions.first, restrictions.second, [&to](const auto &restriction) {
+            return restriction.second->AsNodeRestriction().to == to;
+        });
+
+    return no_turn != restrictions.second;
+}
+
+bool isTurnAllowed(const util::NodeBasedDynamicGraph &graph,
+                   const EdgeBasedNodeDataContainer &node_data_container,
+                   const RestrictionMap &restriction_map,
+                   const std::unordered_set<NodeID> &barrier_nodes,
+                   const IntersectionEdgeGeometries &geometries,
+                   const guidance::TurnLanesIndexedArray &turn_lanes_data,
+                   const IntersectionEdge &from,
+                   const IntersectionEdge &to)
+{
+    BOOST_ASSERT(graph.GetTarget(from.edge) == to.node);
+
+    // TODO: to use TurnAnalysis all outgoing edges are required, to be removed later
+    if (graph.GetEdgeData(from.edge).reversed || graph.GetEdgeData(to.edge).reversed)
+        return false;
+
+    const auto intersection_node = to.node;
+    const auto destination_node = graph.GetTarget(to.edge);
+    auto const &restrictions = restriction_map.Restrictions(from.node, intersection_node);
+
+    // Check if turn is explicitly restricted by a turn restriction
+    if (isTurnRestricted(restrictions, destination_node))
+        return false;
+
+    // Precompute reversed bearing of the `from` edge
+    const auto from_edge_reversed_bearing =
+        util::bearing::reverse(findEdgeBearing(geometries, from.edge));
+
+    // Collect some information about the intersection
+    // 1) number of allowed exits and adjacent bidirectional edges
+    std::uint32_t allowed_exits = 0, bidirectional_edges = 0;
+    // 2) edge IDs of roundabouts edges
+    EdgeID roundabout_from = SPECIAL_EDGEID, roundabout_to = SPECIAL_EDGEID;
+    double roundabout_from_angle = 0., roundabout_to_angle = 0.;
+
+    for (const auto eid : graph.GetAdjacentEdgeRange(intersection_node))
+    {
+        const auto &edge_data = graph.GetEdgeData(eid);
+        const auto &edge_class = edge_data.flags;
+        const auto to_node = graph.GetTarget(eid);
+        const auto reverse_edge = graph.FindEdge(to_node, intersection_node);
+        BOOST_ASSERT(reverse_edge != SPECIAL_EDGEID);
+
+        const auto is_exit_edge = !edge_data.reversed && !isTurnRestricted(restrictions, to_node);
+        const auto is_bidirectional = !graph.GetEdgeData(reverse_edge).reversed;
+        allowed_exits += is_exit_edge;
+        bidirectional_edges += is_bidirectional;
+
+        if (edge_class.roundabout || edge_class.circular)
+        {
+            if (edge_data.reversed)
+            {
+                // "Linked Roundabouts" is an example of tie between two linked roundabouts
+                // A tie breaker for that maximizes ∠(roundabout_from_bearing, ¬from_edge_bearing)
+                const auto angle = util::bearing::angleBetween(
+                    findEdgeBearing(geometries, reverse_edge), from_edge_reversed_bearing);
+                if (angle > roundabout_from_angle)
+                {
+                    roundabout_from = reverse_edge;
+                    roundabout_from_angle = angle;
+                }
+            }
+            else
+            {
+                // a tie breaker that maximizes ∠(¬from_edge_bearing, roundabout_to_bearing)
+                const auto angle = util::bearing::angleBetween(from_edge_reversed_bearing,
+                                                               findEdgeBearing(geometries, eid));
+                if (angle > roundabout_to_angle)
+                {
+                    roundabout_to = eid;
+                    roundabout_to_angle = angle;
+                }
+            }
+        }
+    }
+
+    // 3) if the intersection has a barrier
+    const bool is_barrier_node = barrier_nodes.find(intersection_node) != barrier_nodes.end();
+
+    // Check a U-turn
+    if (from.node == destination_node)
+    {
+        // Allow U-turns before barrier nodes
+        if (is_barrier_node)
+            return true;
+
+        // Allow U-turns at dead-ends
+        if (graph.GetAdjacentEdgeRange(intersection_node).size() == 1)
+            return true;
+
+        // Allow U-turns at dead-ends if there is at most one bidirectional road at the intersection
+        // The condition allows U-turns d→a→d and c→b→c ("Bike - Around the Block" test)
+        //   a→b
+        //   ↕ ↕
+        //   d↔c
+        if (allowed_exits == 1 || bidirectional_edges <= 1)
+            return true;
+
+        // Allow U-turn if the incoming edge has a U-turn lane
+        // TODO: revisit the use-case, related PR #2753
+        const auto &incoming_edge_annotation_id = graph.GetEdgeData(from.edge).annotation_data;
+        const auto lane_description_id = static_cast<std::size_t>(
+            node_data_container.GetAnnotation(incoming_edge_annotation_id).lane_description_id);
+        if (lane_description_id != INVALID_LANE_DESCRIPTIONID)
+        {
+            const auto &turn_lane_offsets = std::get<0>(turn_lanes_data);
+            const auto &turn_lanes = std::get<1>(turn_lanes_data);
+            BOOST_ASSERT(lane_description_id + 1 < turn_lane_offsets.size());
+
+            if (std::any_of(turn_lanes.begin() + turn_lane_offsets[lane_description_id],
+                            turn_lanes.begin() + turn_lane_offsets[lane_description_id + 1],
+                            [](const auto &lane) { return lane & guidance::TurnLaneType::uturn; }))
+                return true;
+        }
+
+        // Don't allow U-turns on usual intersections
+        return false;
+    }
+
+    // Don't allow turns via barriers for not U-turn maneuvers
+    if (is_barrier_node)
+        return false;
+
+    // Check for roundabouts exits in the opposite direction of roundabout flow
+    if (roundabout_from != SPECIAL_EDGEID && roundabout_to != SPECIAL_EDGEID)
+    {
+        // Get bearings of edges
+        const auto roundabout_from_bearing = findEdgeBearing(geometries, roundabout_from);
+        const auto roundabout_to_bearing = findEdgeBearing(geometries, roundabout_to);
+        const auto to_edge_bearing = findEdgeBearing(geometries, to.edge);
+
+        // Get angles from the roundabout edge to three other edges
+        const auto roundabout_angle =
+            util::bearing::angleBetween(roundabout_from_bearing, roundabout_to_bearing);
+        const auto roundabout_from_angle =
+            util::bearing::angleBetween(roundabout_from_bearing, from_edge_reversed_bearing);
+        const auto roundabout_to_angle =
+            util::bearing::angleBetween(roundabout_from_bearing, to_edge_bearing);
+
+        // Restrict turning over a roundabout if `roundabout_to_angle` is in
+        // a sector between `roundabout_from_bearing` to `from_bearing` (shaded area)
+        //
+        //    roundabout_angle = 270°         roundabout_angle = 90°
+        //  roundabout_from_angle = 150°    roundabout_from_angle = 150°
+        //   roundabout_to_angle = 90°       roundabout_to_angle = 270°
+        //
+        //             150°                            150°
+        //              v░░░░░░                ░░░░░░░░░v
+        //             v░░░░░░░                ░░░░░░░░v
+        // 270° <-ooo- v -ttt-> 90°       270° <-ttt- v -ooo-> 90°
+        //             ^░░░░░░░                ░░░░░░░^
+        //             r░░░░░░░                ░░░░░░░r
+        //             r░░░░░░░                ░░░░░░░r
+        if ((roundabout_from_angle < roundabout_angle &&
+             roundabout_to_angle < roundabout_from_angle) ||
+            (roundabout_from_angle > roundabout_angle &&
+             roundabout_to_angle > roundabout_from_angle))
+            return false;
+    }
+
+    return true;
+}
+
+// The function adapts intersection geometry data to TurnAnalysis
+guidance::IntersectionView
+convertToIntersectionView(const util::NodeBasedDynamicGraph &graph,
+                          const EdgeBasedNodeDataContainer &node_data_container,
+                          const RestrictionMap &restriction_map,
+                          const std::unordered_set<NodeID> &barrier_nodes,
+                          const IntersectionEdgeGeometries &edge_geometries,
+                          const guidance::TurnLanesIndexedArray &turn_lanes_data,
+                          const IntersectionEdge &incoming_edge,
+                          const IntersectionEdges &outgoing_edges,
+                          const std::unordered_set<EdgeID> &merged_edges)
+{
+    using util::bearing::angleBetween;
+
+    const auto edge_it = findEdge(edge_geometries, incoming_edge.edge);
+    const auto incoming_bearing = edge_it->perceived_bearing;
+    const auto initial_incoming_bearing = edge_it->initial_bearing;
+
+    using IntersectionViewDataWithAngle = std::pair<guidance::IntersectionViewData, double>;
+    std::vector<IntersectionViewDataWithAngle> pre_intersection_view;
+    guidance::IntersectionViewData uturn{{SPECIAL_EDGEID, 0., 0.}, false, 0.};
+    std::size_t allowed_uturns_number = 0;
+    for (const auto &outgoing_edge : outgoing_edges)
+    {
+        const auto is_uturn = [](const auto angle) {
+            return std::fabs(angle) < std::numeric_limits<double>::epsilon();
+        };
+
+        const auto edge_it = findEdge(edge_geometries, outgoing_edge.edge);
+        const auto segment_length = edge_it->length;
+        const auto is_merged = merged_edges.count(outgoing_edge.edge) != 0;
+        const auto is_turn_allowed = intersection::isTurnAllowed(graph,
+                                                                 node_data_container,
+                                                                 restriction_map,
+                                                                 barrier_nodes,
+                                                                 edge_geometries,
+                                                                 turn_lanes_data,
+                                                                 incoming_edge,
+                                                                 outgoing_edge);
+
+        // Compute angles
+        const auto outgoing_bearing = edge_it->perceived_bearing;
+        const auto initial_outgoing_bearing = edge_it->initial_bearing;
+        auto turn_angle = std::fmod(
+            std::round(angleBetween(incoming_bearing, outgoing_bearing) * 1e8) / 1e8, 360.);
+        auto initial_angle = angleBetween(initial_incoming_bearing, initial_outgoing_bearing);
+
+        // If angle of the allowed turn is in a neighborhood of 0° (±15°) but the initial OSM angle
+        // is in the opposite semi-plane then assume explicitly a U-turn to avoid incorrect
+        // adjustments due to numerical noise in selection of representative_coordinate
+        if (is_turn_allowed &&
+            ((turn_angle < 15 && initial_angle > 180) || (turn_angle > 345 && initial_angle < 180)))
+        {
+            turn_angle = 0;
+            initial_angle = 0;
+        }
+
+        const auto is_uturn_angle = is_uturn(turn_angle);
+
+        guidance::IntersectionViewData road{
+            {outgoing_edge.edge, outgoing_bearing, segment_length}, is_turn_allowed, turn_angle};
+
+        if (graph.GetTarget(outgoing_edge.edge) == incoming_edge.node)
+        { // Save the true U-turn road to add later if no allowed U-turns will be added
+            uturn = road;
+        }
+        else if (is_turn_allowed || (!is_merged && !is_uturn_angle))
+        { // Add roads that have allowed entry or not U-turns and not merged
+            allowed_uturns_number += is_uturn_angle;
+
+            // Adjust computed initial turn angle for non-U-turn road edge cases:
+            // 1) use 0° or 360° if the road has 0° initial angle
+            // 2) use turn angle if the smallest arc between turn and initial angles passes 0°
+            const auto use_turn_angle = (turn_angle > 270 && initial_angle < 90) ||
+                                        (turn_angle < 90 && initial_angle > 270);
+            const auto adjusted_angle = is_uturn(initial_angle)
+                                            ? (turn_angle > 180. ? 360. : 0.)
+                                            : use_turn_angle ? turn_angle : initial_angle;
+            pre_intersection_view.push_back({road, adjusted_angle});
+        }
+    }
+
+    BOOST_ASSERT(uturn.eid != SPECIAL_EDGEID);
+    if (uturn.entry_allowed || allowed_uturns_number == 0)
+    { // Add the true U-turn if it is allowed or no other U-turns found
+        pre_intersection_view.insert(pre_intersection_view.begin(), {uturn, 0});
+    }
+
+    // Order roads in counter-clockwise order starting from the U-turn edge in the OSM order
+    std::stable_sort(pre_intersection_view.begin(),
+                     pre_intersection_view.end(),
+                     [](const auto &lhs, const auto &rhs) {
+                         return std::tie(lhs.second, lhs.first.angle) <
+                                std::tie(rhs.second, rhs.first.angle);
+                     });
+
+    // Adjust perceived bearings to keep the initial OSM order with respect to the first edge
+    for (auto curr = pre_intersection_view.begin(), next = std::next(curr);
+         next != pre_intersection_view.end();
+         ++curr, ++next)
+    {
+        // Check that the perceived angles order is the same as the initial OSM one
+        if (next->first.angle < curr->first.angle)
+        { // If the true bearing is out of the initial order (next before current) then
+            // adjust the next road angle to keep the order. The adjustment angle is at most
+            // 0.5° or a half-angle between the current angle and 360° to prevent overlapping
+            const auto angle_adjustment =
+                std::min(.5, util::restrictAngleToValidRange(360. - curr->first.angle) / 2.);
+            next->first.angle =
+                util::restrictAngleToValidRange(curr->first.angle + angle_adjustment);
+        }
+    }
+
+    // Copy intersection view data
+    guidance::IntersectionView intersection_view;
+    intersection_view.reserve(pre_intersection_view.size());
+    std::transform(pre_intersection_view.begin(),
+                   pre_intersection_view.end(),
+                   std::back_inserter(intersection_view),
+                   [](const auto &road) { return road.first; });
+
+    return intersection_view;
+}
+
+//                                               a
+//                                               |
+//                                               |
+//                                               v
+// For an intersection from_node --via_eid--> turn_node ----> c
+//                                               ^
+//                                               |
+//                                               |
+//                                               b
+// This functions returns _all_ turns as if the graph was undirected.
+// That means we not only get (from_node, turn_node, c) in the above example
+// but also (from_node, turn_node, a), (from_node, turn_node, b). These turns are
+// marked as invalid and only needed for intersection classification.
+template <bool USE_CLOSE_COORDINATE>
+guidance::IntersectionView
+getConnectedRoads(const util::NodeBasedDynamicGraph &graph,
+                  const EdgeBasedNodeDataContainer &node_data_container,
+                  const std::vector<util::Coordinate> &node_coordinates,
+                  const extractor::CompressedEdgeContainer &compressed_geometries,
+                  const RestrictionMap &node_restriction_map,
+                  const std::unordered_set<NodeID> &barrier_nodes,
+                  const guidance::TurnLanesIndexedArray &turn_lanes_data,
+                  const IntersectionEdge &incoming_edge)
+{
+    const auto intersection_node = graph.GetTarget(incoming_edge.edge);
+    const auto &outgoing_edges = intersection::getOutgoingEdges(graph, intersection_node);
+    auto edge_geometries = getIntersectionOutgoingGeometries<USE_CLOSE_COORDINATE>(
+        graph, compressed_geometries, node_coordinates, intersection_node);
+
+    // Add incoming edges with reversed bearings
+    const auto edges_number = edge_geometries.size();
+    edge_geometries.resize(2 * edges_number);
+    for (std::size_t index = 0; index < edges_number; ++index)
+    {
+        const auto &geometry = edge_geometries[index];
+        const auto remote_node = graph.GetTarget(geometry.edge);
+        const auto incoming_edge = graph.FindEdge(remote_node, intersection_node);
+        edge_geometries[edges_number + index] = {incoming_edge,
+                                                 util::bearing::reverse(geometry.initial_bearing),
+                                                 util::bearing::reverse(geometry.perceived_bearing),
+                                                 geometry.length};
+    }
+
+    // Enforce ordering of edges by IDs
+    std::sort(edge_geometries.begin(), edge_geometries.end());
+
+    return convertToIntersectionView(graph,
+                                     node_data_container,
+                                     node_restriction_map,
+                                     barrier_nodes,
+                                     edge_geometries,
+                                     turn_lanes_data,
+                                     incoming_edge,
+                                     outgoing_edges,
+                                     std::unordered_set<EdgeID>());
+}
+
+template guidance::IntersectionView
+getConnectedRoads<false>(const util::NodeBasedDynamicGraph &graph,
+                         const EdgeBasedNodeDataContainer &node_data_container,
+                         const std::vector<util::Coordinate> &node_coordinates,
+                         const extractor::CompressedEdgeContainer &compressed_geometries,
+                         const RestrictionMap &node_restriction_map,
+                         const std::unordered_set<NodeID> &barrier_nodes,
+                         const guidance::TurnLanesIndexedArray &turn_lanes_data,
+                         const IntersectionEdge &incoming_edge);
+
+template guidance::IntersectionView
+getConnectedRoads<true>(const util::NodeBasedDynamicGraph &graph,
+                        const EdgeBasedNodeDataContainer &node_data_container,
+                        const std::vector<util::Coordinate> &node_coordinates,
+                        const extractor::CompressedEdgeContainer &compressed_geometries,
+                        const RestrictionMap &node_restriction_map,
+                        const std::unordered_set<NodeID> &barrier_nodes,
+                        const guidance::TurnLanesIndexedArray &turn_lanes_data,
+                        const IntersectionEdge &incoming_edge);
+
+IntersectionEdge skipDegreeTwoNodes(const util::NodeBasedDynamicGraph &graph, IntersectionEdge road)
+{
+    std::unordered_set<NodeID> visited_nodes;
+    (void)visited_nodes;
+
+    // Skip trivial nodes without generating the intersection in between, stop at the very first
+    // intersection of degree > 2
+    const auto starting_node = road.node;
+    auto next_node = graph.GetTarget(road.edge);
+    while (graph.GetOutDegree(next_node) == 2 && next_node != starting_node)
+    {
+        BOOST_ASSERT(visited_nodes.insert(next_node).second);
+        const auto next_edge = graph.BeginEdges(next_node);
+        road.edge = graph.GetTarget(next_edge) == road.node ? next_edge + 1 : next_edge;
+        road.node = next_node;
+        next_node = graph.GetTarget(road.edge);
+    }
+
+    return road;
+}
+}
+}
+}

src/nodejs/node_osrm.cpp

@@ -76,8 +76,9 @@ NAN_MODULE_INIT(Engine::Init)
  * @param {Number} [options.max_locations_viaroute] Max. locations supported in viaroute query (default: unlimited).
  * @param {Number} [options.max_locations_distance_table] Max. locations supported in distance table query (default: unlimited).
  * @param {Number} [options.max_locations_map_matching] Max. locations supported in map-matching query (default: unlimited).
+ * @param {Number} [options.max_radius_map_matching] Max. radius size supported in map matching query (default: 5).
  * @param {Number} [options.max_results_nearest] Max. results supported in nearest query (default: unlimited).
- * @param {Number} [options.max_alternatives] Max.number of alternatives supported in alternative routes query (default: 3).
+ * @param {Number} [options.max_alternatives] Max. number of alternatives supported in alternative routes query (default: 3).
  *
  * @class OSRM
  *

src/storage/storage.cpp

@@ -331,43 +331,6 @@ void Storage::PopulateLayout(DataLayout &layout)
         layout.SetBlockSize<char>(DataLayout::TIMESTAMP, timestamp_size);
     }
 
-    // load core marker size
-    if (boost::filesystem::exists(config.GetPath(".osrm.core")))
-    {
-        io::FileReader core_marker_file(config.GetPath(".osrm.core"),
-                                        io::FileReader::VerifyFingerprint);
-        const auto num_metrics = core_marker_file.ReadElementCount64();
-        if (num_metrics > NUM_METRICS)
-        {
-            throw util::exception("Only " + std::to_string(NUM_METRICS) +
-                                  " metrics are supported at the same time.");
-        }
-
-        const auto number_of_core_markers = core_marker_file.ReadElementCount64();
-        for (const auto index : util::irange<std::size_t>(0, num_metrics))
-        {
-            layout.SetBlockSize<unsigned>(
-                static_cast<DataLayout::BlockID>(DataLayout::CH_CORE_MARKER_0 + index),
-                number_of_core_markers);
-        }
-        for (const auto index : util::irange<std::size_t>(num_metrics, NUM_METRICS))
-        {
-            layout.SetBlockSize<unsigned>(
-                static_cast<DataLayout::BlockID>(DataLayout::CH_CORE_MARKER_0 + index), 0);
-        }
-    }
-    else
-    {
-        layout.SetBlockSize<unsigned>(DataLayout::CH_CORE_MARKER_0, 0);
-        layout.SetBlockSize<unsigned>(DataLayout::CH_CORE_MARKER_1, 0);
-        layout.SetBlockSize<unsigned>(DataLayout::CH_CORE_MARKER_2, 0);
-        layout.SetBlockSize<unsigned>(DataLayout::CH_CORE_MARKER_3, 0);
-        layout.SetBlockSize<unsigned>(DataLayout::CH_CORE_MARKER_4, 0);
-        layout.SetBlockSize<unsigned>(DataLayout::CH_CORE_MARKER_5, 0);
-        layout.SetBlockSize<unsigned>(DataLayout::CH_CORE_MARKER_6, 0);
-        layout.SetBlockSize<unsigned>(DataLayout::CH_CORE_MARKER_7, 0);
-    }
-
     // load turn weight penalties
     {
         io::FileReader turn_weight_penalties_file(config.GetPath(".osrm.turn_weight_penalties"),

src/tools/routed.cpp

@@ -133,7 +133,10 @@ inline unsigned generateServerProgramOptions(const int argc,
          "Max. results supported in nearest query") //
         ("max-alternatives",
          value<int>(&config.max_alternatives)->default_value(3),
-         "Max. number of alternatives supported in the MLD route query");
+         "Max. number of alternatives supported in the MLD route query") //
+        ("max-matching-radius",
+         value<double>(&config.max_radius_map_matching)->default_value(5),
+         "Max. radius size supported in map matching query");
 
     // hidden options, will be allowed on command line, but will not be shown to the user
     boost::program_options::options_description hidden_options("Hidden options");

taginfo.json

@@ -147,6 +147,8 @@
         {"key": "maxspeed", "value": "AT:rural"},
         {"key": "maxspeed", "value": "AT:trunk"},
         {"key": "maxspeed", "value": "BE:motorway"},
+        {"key": "maxspeed", "value": "BY:urban"},
+        {"key": "maxspeed", "value": "BY:motorway"},
         {"key": "maxspeed", "value": "CH:rural"},
         {"key": "maxspeed", "value": "CH:trunk"},
         {"key": "maxspeed", "value": "CH:motorway"},
@@ -170,7 +172,6 @@
         {"key": "maxspeed", "value": "RU:living_street"},
         {"key": "maxspeed", "value": "RU:urban"},
         {"key": "maxspeed", "value": "RU:motorway"},
-        {"key": "maxspeed", "value": "UA:urban"},
         {"key": "maxspeed", "value": "UK:nsl_single"},
         {"key": "maxspeed", "value": "UK:nsl_dual"},
         {"key": "maxspeed", "value": "UK:motorway"},

unit_tests/extractor/graph_compressor.cpp

@@ -26,10 +26,8 @@ namespace
 // creates a default edge of unit weight
 inline InputEdge MakeUnitEdge(const NodeID from, const NodeID to)
 {
-    // src, tgt, dist, edge_id, name_id, fwd, bkwd, roundabout, circular, startpoint, local access,
-    // split edge, travel_mode
-    return {from,
-            to,
+    return {from,                          // source
+            to,                            // target
             1,                             // weight
             1,                             // duration
             GeometryID{0, false},          // geometry_id

unit_tests/extractor/intersection_analysis_tests.cpp

@@ -0,0 +1,315 @@
+#include "extractor/intersection/intersection_analysis.hpp"
+
+#include "extractor/graph_compressor.hpp"
+
+#include "../common/range_tools.hpp"
+#include "../unit_tests/mocks/mock_scripting_environment.hpp"
+
+#include <boost/test/test_case_template.hpp>
+#include <boost/test/unit_test.hpp>
+
+BOOST_AUTO_TEST_SUITE(intersection_analysis_tests)
+
+using namespace osrm;
+using namespace osrm::extractor;
+using namespace osrm::extractor::guidance;
+using namespace osrm::extractor::intersection;
+using InputEdge = util::NodeBasedDynamicGraph::InputEdge;
+using Graph = util::NodeBasedDynamicGraph;
+
+BOOST_AUTO_TEST_CASE(simple_intersection_connectivity)
+{
+    std::unordered_set<NodeID> barrier_nodes{6};
+    std::unordered_set<NodeID> traffic_lights;
+    std::vector<NodeBasedEdgeAnnotation> annotations{
+        {EMPTY_NAMEID, 0, INAVLID_CLASS_DATA, TRAVEL_MODE_DRIVING, false},
+        {EMPTY_NAMEID, 1, INAVLID_CLASS_DATA, TRAVEL_MODE_DRIVING, false}};
+    std::vector<TurnRestriction> restrictions{TurnRestriction{NodeRestriction{0, 2, 1}, false}};
+    std::vector<ConditionalTurnRestriction> conditional_restrictions;
+    CompressedEdgeContainer container;
+    test::MockScriptingEnvironment scripting_environment;
+
+    TurnLanesIndexedArray turn_lanes_data{{0, 0, 3},
+                                          {TurnLaneType::uturn | TurnLaneType::left,
+                                           TurnLaneType::straight,
+                                           TurnLaneType::straight | TurnLaneType::right}};
+
+    // Graph with an additional turn restriction 0→2→1 and bollard at 6
+    //   0→5↔6↔7
+    //   ↕
+    // 1↔2←3
+    //   ↓
+    //   4
+    const auto unit_edge =
+        [](const NodeID from, const NodeID to, bool allowed, AnnotationID annotation) {
+            return InputEdge{from,
+                             to,
+                             1,
+                             1,
+                             GeometryID{0, false},
+                             !allowed,
+                             NodeBasedEdgeClassification(),
+                             annotation};
+        };
+
+    std::vector<InputEdge> edges = {unit_edge(0, 2, true, 1),
+                                    unit_edge(0, 5, true, 0),
+                                    unit_edge(1, 2, true, 0),
+                                    unit_edge(2, 0, true, 0),
+                                    unit_edge(2, 1, true, 0),
+                                    unit_edge(2, 3, false, 0),
+                                    unit_edge(2, 4, true, 0),
+                                    unit_edge(3, 2, true, 0),
+                                    unit_edge(4, 2, false, 0),
+                                    unit_edge(5, 0, false, 0),
+                                    unit_edge(5, 6, true, 0),
+                                    unit_edge(6, 5, true, 0),
+                                    unit_edge(6, 7, true, 0),
+                                    unit_edge(7, 6, true, 0)};
+    IntersectionEdgeGeometries edge_geometries{
+        {0, 180, 180, 10.},  // 0→2
+        {1, 90, 90, 10.},    // 0→5
+        {2, 90, 90, 10.},    // 1→2
+        {3, 0, 0, 10.},      // 2→0
+        {4, 270, 270, 10.},  // 2→1
+        {5, 90, 90, 10.},    // 2→3
+        {6, 180, 180, 10.},  // 2→4
+        {7, 270, 270, 10.},  // 3→2
+        {8, 0, 0, 10.},      // 4→2
+        {9, 270, 270, 10.},  // 5→0
+        {10, 90, 90, 10.},   // 5→6
+        {11, 270, 270, 10.}, // 6→5
+        {12, 90, 90, 10.},   // 6→7
+        {13, 270, 270, 10.}  // 7→6
+    };
+
+    Graph graph(8, edges);
+
+    GraphCompressor().Compress(barrier_nodes,
+                               traffic_lights,
+                               scripting_environment,
+                               restrictions,
+                               conditional_restrictions,
+                               graph,
+                               annotations,
+                               container);
+
+    REQUIRE_SIZE_RANGE(getIncomingEdges(graph, 2), 3);
+    REQUIRE_SIZE_RANGE(getOutgoingEdges(graph, 2), 4);
+
+    EdgeBasedNodeDataContainer node_data_container(
+        std::vector<EdgeBasedNode>(graph.GetNumberOfEdges()), annotations);
+    RestrictionMap restriction_map(restrictions, IndexNodeByFromAndVia());
+
+    const auto connectivity_matrix = [&](NodeID node) {
+        std::vector<bool> result;
+        const auto incoming_edges = getIncomingEdges(graph, node);
+        const auto outgoing_edges = getOutgoingEdges(graph, node);
+        for (const auto incoming_edge : incoming_edges)
+        {
+            for (const auto outgoing_edge : outgoing_edges)
+            {
+                result.push_back(isTurnAllowed(graph,
+                                               node_data_container,
+                                               restriction_map,
+                                               barrier_nodes,
+                                               edge_geometries,
+                                               turn_lanes_data,
+                                               incoming_edge,
+                                               outgoing_edge));
+            }
+        }
+        return result;
+    };
+
+    CHECK_EQUAL_RANGE(connectivity_matrix(0), 1, 1); // from node 2 allowed U-turn and to node 5
+    CHECK_EQUAL_RANGE(connectivity_matrix(1), 1);    // from node 2 allowed U-turn
+    CHECK_EQUAL_RANGE(connectivity_matrix(2),
+                      // clang-format off
+                      1, 0, 0, 1, // from node 0 to node 4 and a U-turn at 2
+                      1, 0, 0, 1, // from node 1 to nodes 0 and 4
+                      1, 1, 0, 1  // from node 3 to nodes 0, 1 and 4
+                      // clang-format on
+                      );
+    REQUIRE_SIZE_RANGE(connectivity_matrix(3), 0); // no incoming edges, empty matrix
+    CHECK_EQUAL_RANGE(connectivity_matrix(4), 0);  // from node 2 not allowed U-turn
+    CHECK_EQUAL_RANGE(connectivity_matrix(5),
+                      // clang-format off
+                      0, 1, // from node 0 to node 6
+                      0, 1, // from node 6 a U-turn to node 6
+                      // clang-format on
+                      );
+
+    CHECK_EQUAL_RANGE(connectivity_matrix(6),
+                      // clang-format off
+                      1, 0, // from node 5 a U-turn to node 5
+                      0, 1, // from node 7 a U-turn to node 7
+                      // clang-format on
+                      );
+}
+
+BOOST_AUTO_TEST_CASE(roundabout_intersection_connectivity)
+{
+    std::unordered_set<NodeID> barrier_nodes;
+    std::unordered_set<NodeID> traffic_lights;
+    std::vector<NodeBasedEdgeAnnotation> annotations;
+    std::vector<TurnRestriction> restrictions;
+    std::vector<ConditionalTurnRestriction> conditional_restrictions;
+    CompressedEdgeContainer container;
+    test::MockScriptingEnvironment scripting_environment;
+
+    TurnLanesIndexedArray turn_lanes_data;
+
+    // Graph with roundabout edges 5→0→2
+    //  1  2  3
+    //   ↘ ↑ ↙
+    //     0
+    //   ↙ ↑ ↘
+    //  4  5  6
+    const auto unit_edge = [](const NodeID from, const NodeID to, bool allowed, bool roundabout) {
+        return InputEdge{
+            from,
+            to,
+            1,
+            1,
+            GeometryID{0, false},
+            !allowed,
+            NodeBasedEdgeClassification{true, false, false, roundabout, false, false, false, {}},
+            0};
+    };
+    std::vector<InputEdge> edges = {unit_edge(0, 1, false, false),
+                                    unit_edge(0, 2, true, true),
+                                    unit_edge(0, 3, false, false),
+                                    unit_edge(0, 4, true, false),
+                                    unit_edge(0, 5, false, true),
+                                    unit_edge(0, 6, true, false),
+                                    unit_edge(1, 0, true, false),
+                                    unit_edge(2, 0, false, true),
+                                    unit_edge(3, 0, true, false),
+                                    unit_edge(4, 0, false, false),
+                                    unit_edge(5, 0, true, true),
+                                    unit_edge(6, 0, false, false)};
+    IntersectionEdgeGeometries edge_geometries{
+        {0, 315, 315, 10}, // 0→1
+        {1, 0, 0, 10},     // 0→2
+        {2, 45, 45, 10},   // 0→3
+        {3, 225, 225, 10}, // 0→4
+        {4, 180, 180, 10}, // 0→5
+        {5, 135, 135, 10}, // 0→6
+        {6, 135, 135, 10}, // 1→0
+        {7, 180, 180, 10}, // 2→0
+        {8, 225, 225, 10}, // 3→0
+        {9, 45, 45, 10},   // 4→0
+        {10, 0, 0, 10},    // 5→0
+        {11, 315, 315, 10} // 6→0
+    };
+
+    Graph graph(7, edges);
+
+    GraphCompressor().Compress(barrier_nodes,
+                               traffic_lights,
+                               scripting_environment,
+                               restrictions,
+                               conditional_restrictions,
+                               graph,
+                               annotations,
+                               container);
+
+    REQUIRE_SIZE_RANGE(getIncomingEdges(graph, 0), 3);
+    REQUIRE_SIZE_RANGE(getOutgoingEdges(graph, 0), 6);
+
+    EdgeBasedNodeDataContainer node_data_container(
+        std::vector<EdgeBasedNode>(graph.GetNumberOfEdges()), annotations);
+    RestrictionMap restriction_map(restrictions, IndexNodeByFromAndVia());
+
+    const auto connectivity_matrix = [&](NodeID node) {
+        std::vector<bool> result;
+        const auto incoming_edges = getIncomingEdges(graph, node);
+        const auto outgoing_edges = getOutgoingEdges(graph, node);
+        for (const auto incoming_edge : incoming_edges)
+        {
+            for (const auto outgoing_edge : outgoing_edges)
+            {
+                result.push_back(isTurnAllowed(graph,
+                                               node_data_container,
+                                               restriction_map,
+                                               barrier_nodes,
+                                               edge_geometries,
+                                               turn_lanes_data,
+                                               incoming_edge,
+                                               outgoing_edge));
+            }
+        }
+        return result;
+    };
+
+    CHECK_EQUAL_RANGE(connectivity_matrix(0),
+                      // clang-format off
+                      0, 1, 0, 0, 0, 1, // from node 1 to nodes 2 and 6
+                      0, 1, 0, 1, 0, 0, // from node 3 to nodes 2 and 4
+                      0, 1, 0, 1, 0, 1  // from node 5 to nodes 2, 4 and 6
+                      // clang-format on
+                      );
+}
+
+BOOST_AUTO_TEST_CASE(skip_degree_two_nodes)
+{
+    std::unordered_set<NodeID> barrier_nodes{1};
+    std::unordered_set<NodeID> traffic_lights{2};
+    std::vector<NodeBasedEdgeAnnotation> annotations(1);
+    std::vector<TurnRestriction> restrictions;
+    std::vector<ConditionalTurnRestriction> conditional_restrictions;
+    CompressedEdgeContainer container;
+    test::MockScriptingEnvironment scripting_environment;
+
+    TurnLanesIndexedArray turn_lanes_data;
+
+    // Graph
+    //
+    //  0↔1→2↔3↔4→5         7
+    //          ↑          ↕ ↕
+    //          6         8 ↔ 9
+    //
+    const auto unit_edge = [](const NodeID from, const NodeID to, bool allowed) {
+        return InputEdge{
+            from, to, 1, 1, GeometryID{0, false}, !allowed, NodeBasedEdgeClassification{}, 0};
+    };
+    std::vector<InputEdge> edges = {unit_edge(0, 1, true), // 0
+                                    unit_edge(1, 0, true),
+                                    unit_edge(1, 2, true),
+                                    unit_edge(2, 1, false),
+                                    unit_edge(2, 3, true),
+                                    unit_edge(3, 2, true), // 5
+                                    unit_edge(3, 4, true),
+                                    unit_edge(4, 3, true),
+                                    unit_edge(4, 5, true),
+                                    unit_edge(4, 6, false),
+                                    unit_edge(5, 4, false), // 10
+                                    unit_edge(6, 4, true),
+                                    // Circle
+                                    unit_edge(7, 8, true), // 12
+                                    unit_edge(7, 9, true),
+                                    unit_edge(8, 7, true),
+                                    unit_edge(8, 9, true),
+                                    unit_edge(9, 7, true),
+                                    unit_edge(9, 8, true)};
+
+    Graph graph(10, edges);
+
+    GraphCompressor().Compress(barrier_nodes,
+                               traffic_lights,
+                               scripting_environment,
+                               restrictions,
+                               conditional_restrictions,
+                               graph,
+                               annotations,
+                               container);
+
+    BOOST_CHECK_EQUAL(graph.GetTarget(skipDegreeTwoNodes(graph, {0, 0}).edge), 4);
+    BOOST_CHECK_EQUAL(graph.GetTarget(skipDegreeTwoNodes(graph, {4, 7}).edge), 0);
+    BOOST_CHECK_EQUAL(graph.GetTarget(skipDegreeTwoNodes(graph, {5, 10}).edge), 4);
+    BOOST_CHECK_EQUAL(graph.GetTarget(skipDegreeTwoNodes(graph, {6, 11}).edge), 4);
+    BOOST_CHECK_EQUAL(graph.GetTarget(skipDegreeTwoNodes(graph, {7, 12}).edge), 7);
+}
+
+BOOST_AUTO_TEST_SUITE_END()

unit_tests/library/limits.cpp

@@ -104,7 +104,7 @@ BOOST_AUTO_TEST_CASE(test_table_limits)
     BOOST_CHECK(code == "TooBig"); // per the New-Server API spec
 }
 
-BOOST_AUTO_TEST_CASE(test_match_limits)
+BOOST_AUTO_TEST_CASE(test_match_coordinate_limits)
 {
     using namespace osrm;
 
@@ -131,6 +131,38 @@ BOOST_AUTO_TEST_CASE(test_match_limits)
     BOOST_CHECK(code == "TooBig"); // per the New-Server API spec
 }
 
+BOOST_AUTO_TEST_CASE(test_match_radiuses_limits)
+{
+    using namespace osrm;
+
+    EngineConfig config;
+    config.storage_config = {OSRM_TEST_DATA_DIR "/ch/monaco.osrm"};
+    config.use_shared_memory = false;
+    config.max_radius_map_matching = 2.0;
+
+    OSRM osrm{config};
+
+    MatchParameters params;
+    osrm::util::Coordinate coord1 = {osrm::util::FloatLongitude{7.41748809814453},
+                                     osrm::util::FloatLatitude{43.73558473009846}};
+    osrm::util::Coordinate coord2 = {osrm::util::FloatLongitude{7.417193055152893},
+                                     osrm::util::FloatLatitude{43.735162245104775}};
+    params.coordinates.emplace_back(coord1);
+    params.coordinates.emplace_back(coord2);
+    params.radiuses.emplace_back(3.0);
+    params.radiuses.emplace_back(2.0);
+
+    json::Object result;
+
+    const auto rc = osrm.Match(params, result);
+
+    BOOST_CHECK(rc == Status::Error);
+
+    // Make sure we're not accidentally hitting a guard code path before
+    const auto code = result.values["code"].get<json::String>().value;
+    BOOST_CHECK(code == "TooBig"); // per the New-Server API spec
+}
+
 BOOST_AUTO_TEST_CASE(test_nearest_limits)
 {
     using namespace osrm;

unit_tests/server/parameters_parser.cpp

@@ -74,8 +74,6 @@ BOOST_AUTO_TEST_CASE(invalid_route_urls)
     BOOST_CHECK_EQUAL(testInvalidOptions<RouteParameters>("1,2;3,4?annotations=true,false"), 24UL);
     BOOST_CHECK_EQUAL(
         testInvalidOptions<RouteParameters>("1,2;3,4?annotations=&overview=simplified"), 20UL);
-
-    // BOOST_CHECK_EQUAL(testInvalidOptions<RouteParameters>(), );
 }
 
 BOOST_AUTO_TEST_CASE(invalid_table_urls)
@@ -559,6 +557,22 @@ BOOST_AUTO_TEST_CASE(valid_match_urls)
     CHECK_EQUAL_RANGE(reference_2.coordinates, result_2->coordinates);
 }
 
+BOOST_AUTO_TEST_CASE(invalid_match_urls)
+{
+    std::vector<util::Coordinate> coords_1 = {{util::FloatLongitude{1}, util::FloatLatitude{2}},
+                                              {util::FloatLongitude{3}, util::FloatLatitude{4}}};
+
+    MatchParameters reference_1{};
+    reference_1.coordinates = coords_1;
+    auto result_1 = parseParameters<MatchParameters>("1,2;3,4?radiuses=unlimited;60");
+    BOOST_CHECK(result_1);
+    CHECK_EQUAL_RANGE(reference_1.timestamps, result_1->timestamps);
+    CHECK_EQUAL_RANGE(reference_1.bearings, result_1->bearings);
+    BOOST_CHECK(reference_1.radiuses != result_1->radiuses);
+    CHECK_EQUAL_RANGE(reference_1.approaches, result_1->approaches);
+    CHECK_EQUAL_RANGE(reference_1.coordinates, result_1->coordinates);
+}
+
 BOOST_AUTO_TEST_CASE(valid_nearest_urls)
 {
     std::vector<util::Coordinate> coords_1 = {{util::FloatLongitude{1}, util::FloatLatitude{2}}};