Osrm-backend: Extract maxspeed

[MouadSb]

Hello everyone, I want to extract maxspeed from a way information is there any route or function that i can use?

[daniel-j-h]

Care to elaborate a bit more?

In the profiles (e.g. car.lua) you calculate a max speed based on all available OSM tags (such as the maxspeed tag, lane tag, surface tag, etc.) - where do you want to extract a maxspeed now?

If you're looking for speeds along the route geometry, see the annotations=speee flag:

http://project-osrm.org/docs/v5.10.0/api/#route-service

[daniel-j-h]

If you only want the maxspeed tag you don't need a routing engine at all.

Either make an overpass turbo query or write a small osmium handler to walk over all ways and fetch the maxspeed tag from there.

[MouadSb]

Thanks for your time @daniel-j-h