Currently OSRM parses traffic signal nodes without consideration
for the direction in which the signal applies. This can lead
to duplicated routing penalties, especially when a forward and backward
signal are in close proximity on a way.
This commit adds support for directed signals to the extraction and
graph creation. Signal penalties are only applied in the direction
specified by the OSM tag.
We add the assignment of traffic directions to the lua scripts,
maintaining backwards compatibility with the existing boolean
traffic states.
As part of the changes to the internal structures used for tracking
traffic signals during extraction, we stop serialising/deserialising
signals to the `.osrm` file. The traffic signals are only used by
`osrm-extract` so whilst this is a data format change, it will not
break any existing user processes.
Currently there is an edge-case in the turn restriction implementation,
such that routes can not be found if the target input location snaps
to a way used in a (multi) via restriction.
With the addition of snapping input locations to multiple ways, we
can now also snap to the "duplicate" edges created for the restriction graph,
thereby fixing the problem.
This is achieved by adding the duplicate restriction edges to the
geospatial search RTree.
This does open up the possibility of multiple paths representing exactly
the same route - one using the original edge as a source, the other
using the duplicate restriction graph edge as source. This is fine,
as both edges are represented by the same geometry, so will generate
the same result.
This change unblocks the osrm-extract debug build, which is
currently failing on a maneuver override assertion.
The processing of maneuver overrides currently has three issues
- It assumes the via node(s) can't be compressed (the failing assertion)
- It can't handle via-paths containing incompressible nodes
- It doesn't interop with turn restriction on the same path
Turn restrictions and maneuver overrides both use the same
from-via-to path representation.
Therefore, we can fix these issues by consolidating their
structures and reusing the path representation for
turn restrictions, which already is robust to the above
issues.
This also simplifies some of the codebase by removing maneuver
override specific path processing.
There are ~100 maneuver overrides in the OSM database, so the
impact on processing and routing will be minimal.
Currently route results are annotated with additional path information,
such as geometries, turn-by-turn steps and other metadata.
These annotations are generated if they are not requested or returned
in the response.
Datasets needed to generate these annotations are loaded and available
to the OSRM process even when unused.
This commit is a first step towards making the loading of these datasets
optional. We refactor the code so that route annotations are only
generated if explicitly requested and needed in the response.
Specifically, we change the following annotations to be lazily generated:
- Turn-by-turn steps
- Route Overview geometry
- Route segment metadata
For example. a /route/v1 request with
steps=false&overview=false&annotations=false
would no longer call the following data facade methods:
- GetOSMNodeIDOfNode
- GetTurnInstructionForEdgeID
- GetNameIndex
- GetNameForID
- GetRefForID
- GetTurnInstructionForEdgeID
- GetClassData
- IsLeftHandDriving
- GetTravelMode
- IsSegregated
- PreTurnBearing
- PostTurnBearing
- HasLaneData
- GetLaneData
- GetEntryClass
Requests that include segment metadata and/or overview geometry
but not turn-by-turn instructions will also benefit from this,
although there is some interdependency with the step instructions
- a call to GetTurnInstructionForEdgeID is still required.
Requests for OSM annotations will understandably still need to
call GetOSMNodeIDOfNode.
Making these changes unlocks the optional loading of data contained in
the following OSRM files:
- osrm.names
- osrm.icd
- osrm.nbg_nodes (partial)
- osrm.ebg_nodes (partial)
- osrm.edges
Duplicate restriction nodes in the edge-based-graph are currently
not in included in a mapping (.osrm.cnbg_to_ebg) from
node-based-graph edges to edge-based-graph nodes.
This mapping is used by the MLD partitioner to assign EBG nodes
to partitions.
The omission from the mapping means all restriction nodes are
included in a special 'invalid' partition. This special partition
will break the geolocation properties of the multi-level hierarchy.
The partition and its super levels will have a large number of
border nodes and very few internal paths between them.
Given the partitioner is the only consumer of the mapping, we fix
the issue by including the duplicate restriction nodes in the mapping,
so that they are correctly assigned to a partition.
This has measurable improvement on MLD routing.
For a country-sized routing network, the fix reduces routing and table
request computation time by ~2% and ~6% respectively.
Currently OSRM only supports turn restrictions with a single via-node or one
via-way. OSM allows for multiple via-ways to represent longer and more
complex restrictions.
This PR extends the use of duplicate nodes for representng via-way turn
restrictions to also support multi via-way restrictions. Effectively, this
increases the edge-based graph size by the number of edges in multi via-way
restrictions. However, given the low number of these restrictions it
has little effect on total graph size.
In addition, we add a new step in the extraction phase that constructs
a restriction graph to support more complex relationships between restrictions,
such as nested restrictions and overlapping restrictions.
Includes all edges in the rtree, but adds an `is_startpoint` flag to each. Most plugin behaviour remains unchanged (non-startpoint edges aren't used as snapping candidates), but for map matching, we allow snapping to any edge. This fixes map-matching across previously non-is_startpoint edges, like ferries, private service roads, and a few others.
* set and store highway and access classification for the turn function
* expose highway turn classification and access turn classification and speed to the lua profile turn function
* expose whether connection road at turn is incoming or outgoing
* add lua tests for exposed information to turn function
* update docs about attributes in process_turn
* add turn_classification info to docs
* adding warning if uturn and intersection dont match
* handle u turns that do not turn into intersection[0]
* split OSM link generation in an accessible coordinate function
