using way types to calculate turn penalties

[emiltin]

i guess turn penalties will be moved to the lua profiles. it would be useful to be able to read the tags on the involved ways when calculating the penalty.

on bike or foot, turns that require crossing a big road (at an intersection without traffic signals) should incur a bigger penalty than if you're crossing a small road.

it seems related to signal penalties and turn restrictions. perhaps it can be combined?

[emiltin]

when turns are analyzed, are the osm tags on ways still available for inspection?

[mjoris]

At https://github.com/DennisOSRM/Project-OSRM/blob/master/Contractor/EdgeBasedGraphFactory.cpp the OSM tags aren't available, but the edge type IS available.
However the edge type is just the position number of the highway-tag in the speed profile. Currently, a specified speed profile has not been written in the assumption that the tags should be ordered by importance. Moreover some tags might be of equal importance.

[emiltin]

hmm, that's tag position is probably not so useful. could turn analysis somehow be moved to the extractor..?

[emiltin]

@DennisOSRM what's the possibility of accessing the relevant ways tags from the turn penalty method? it's a been a while since i dived into the code.

[DennisOSRM]

The possibility is rather low. We will start with a really simple model for turn penalties and then take it from there.

[daniel-j-h]

@MoKob started to experiment with a more advanced approach in #2912 - bringing all these features together will allow for better turn penalties.