explicitly allow bicycles on marked bike roads about freemap-routing

[PaloTT]

Explicitly allow bicycles on marked bike roads will still not make routing usefull for MTB. I suggest to make extra routing type for MTB. Preferences for road / MTB / trekking bike are different and every category should have own routing.
For MTB routing access tags on highway values: track, path, residential and service ways should be just ignored. In frontend some note about this can be displayed, when selecting this type of routing.

[MichalPP]

not sure what to do: correct OSM data (so that other routers have correct routes)?

[zdila]

OSM data is OK. I want router to allow routing on roads which has vehicle=no but are also in relation with route=bicycle tag. This is a common case in Slovakia. By law such roads are still forbiden to be used by cyclists but practically all cyclists would use them.

[MichalPP]

do you have some pictures IRL that prove that a way should be vehicle=no and route=bicycle? (I cannot find any now).

fyi, i've openned some issues at graphhopper, mapzen and OSRM, so that main bike osm routers are working fine.

[zdila]

i have example for vehicle=forestry:

https://www.freemap.sk/?map=13/48.818281/20.973501&layers=C&transport=bike&points=48.791994/20.935049,48.866747/20.959597

[zdila]

@MichalPP you linked mapzen to graphhopper issue

[zdila]

I think we should implement it regardless of other projects (to use with www.freemap.sk).

[zdila]

@MichalPP please implement it if you can

[zdila]

@PaloTT I think I agree with you. It is though a different issue, please create a new one. @MichalPP would it be difficult for you to implement and deploy it?