render access/vehicle=forestry/agricultural same as vehicle=privat and vehicle=no

[road-runner-osm]

vehicle/access=forestry and vehicle/access=agricultural are a special case of vehicle/access=private, they only allow certain people to use a track/road.
A driving ban (that only allows agricultural or forestry traffic) actually prohibits normal bikes from using a track/street, so imho it should also be rendered in white.

[Phyks]

The reasoning behind this decision is that usually (in practice) access=forestry|agricultural highways are bikable and most taggers may not realize that such access restriction actually prohibits bicycles from using them. See taginfo for instance where only 17% of access=agricultural has a bicycle=yes indication, which seems way too low.

I'm not aware of any tracks that would be dedicated exclusively for agricultural/forestry vehicles and not accessible for pedestrians/bike. The only case I am aware of are actually access=private tracks (which should be tagged as such).

Happy to reconsider if I'm missing something though.

[road-runner-osm]

Hmm, your interpretation seems to be not in alignment with the wiki and practical tagging habits. In the wiki its quite clearly described, that vehicle=agricultural belongs to all vehicles.

If bicycles are not affected, we use motor_vehicle=agricultural.

It may depend on the country, but if there is a no vehicle sign with exception for agricultural traffic, normally it also belongs to bicycles. See for example the traffic sign pages for respective countries like Germany or Austria in the wiki.

[Phyks]

Hmm, your interpretation seems to be not in alignment with the wiki

True, good catch.

If bicycles are not affected, we use motor_vehicle=agricultural.

This is not the practical tagging habit I've seen in France, but we should check more carefully the practices worldwide.

It may depend on the country, but if there is a no vehicle sign with exception for agricultural traffic, normally it also belongs to bicycles.

In France, there are two different signs:

forbidding access to any vehicle (including bikes), very uncommon

and

only forbidding access to motor_vehicle, this one should be tagged with motor_vehicle=agricultural but is usually not tagged as such (but access=agricultural or vehicle=agricultural).