osrm-backend/features
Daniel J. Hofmann d53c267129
Be more aggresive classifying Roundabout Intersections.
Roundabout Intersections are roundabouts with up to four ways and turn
angles which makes the turns obvious, e.g. as in:

```
    *
    *
* *   * *
    *
    *
```

but not

```
     *
    *
* *   *
    * *
     * *
```

For Roundabout Intersections we issue instructions such as
"turn <direction>" instead of "take the <nth> exit".

At the moment we have a limit on the radius for these Roundabout
Intersections of 5 meters. Which fails to classify a wide range of
Roundabout Intersections in the US (with the US-wide streets).

This changeset removes the Roundabout Intersection radius limit:

- if the roundabout is larger than a threshold and is named we classify
  it as a rotary

- if the roundabout matches our criteria for Roundabout Intersections
  we classify it as a Roundabout Intersection

- else fallback to plain old Roundabout

There is a second issue with determining a roundabout's radius.
But that's for another pull request (tracking in #2716).

References:
- https://github.com/Project-OSRM/osrm-backend/issues/2716
2016-08-18 10:50:32 +02:00
..
bicycle basic turn lane handling 2016-06-27 10:07:41 +02:00
car Catch and report errors during osrm-contract tests. 2016-08-05 14:19:22 -07:00
foot Revert "Fixes roundabout spelling in existing cucumber test" 2016-06-02 15:00:49 +02:00
guidance Be more aggresive classifying Roundabout Intersections. 2016-08-18 10:50:32 +02:00
nearest Move nodes inside the search radius 2015-05-15 00:34:53 +02:00
options Fix exception handling around unrecognised options 2016-07-26 11:43:08 +02:00
raster Update raster features to reflect not cutting off arrive instruction 2016-04-05 22:59:14 +02:00
step_definitions We should be returning an error if any errors that occur during reprocessing. 2016-08-05 15:11:12 -07:00
stress cleanup indentation of cuke files 2013-08-29 19:29:13 +02:00
support Catch and report errors during osrm-contract tests. 2016-08-05 14:19:22 -07:00
testbot Be more aggresive classifying Roundabout Intersections. 2016-08-18 10:50:32 +02:00