Access restriction not observed

[simonpoole]

motor_vehicle=agricultural is not observed. This and motor_vehicle=forestry are very common in Switzerland, see
http://taginfo.openstreetmap.ch/keys/motor_vehicle#values

Example of use: http://www.openstreetmap.org/browse/way/36411709

[emiltin]

what does motor_vehicle=agricultural imply? that only agricultural vehicles are allowed?

[simonpoole]

It implies only agricultural traffic (just as forestry implies traffic for forest maintenance), independent of type of vehicle (see http://wiki.openstreetmap.org/wiki/Key:access). Note that the agricultural=* tag applies to agricultural vehicles, not use.

motor_vehicle should include all motorized vehicles with the exception of motorized wheel chairs.

[simonpoole]

Further comment: the most reasonable way to handle this restriction btw is to handle it similar to *=destination. If the user selects a destination that is only reachable by ways with such a restriction, route, but issue a warning. Don't use such roads to route through traffic.

[emiltin]

but bicycles/pedestrians are allowed?

[simonpoole]

Yes. A rough hierarchy of access tags is

access (applies to all access)

• vehicle (all transport via vehicle, so pedestrians, horses, wheelchair etc. allowed)
  -- motor_vehicle (motorized transport)
  --- motorcar
  --- motorcycle
  --- mofa
  --- hgv
  --- .....
  -- bicycle
• foot
• horse
• ......

In real life there is no such thing as a strict hierarchy for such things, see for example:
http://wiki.openstreetmap.org/wiki/OSM_tags_for_routing/Access-Restrictions

[emiltin]

makes sense.
if you're into coding, you might consider contributing updates cucumber tests https://github.com/DennisOSRM/Project-OSRM/blob/master/features/access.feature

:-)

[DennisOSRM]

Thanks for the info.

[DennisOSRM]

This is now implemented with the switch to a script engine based data extraction routine.