We've established: 1. There are all manner of vehicles that may have trouble getting through the chicane (bikes, trikes, tandems, trailers, wheelchairs, canoe trailers, trail-a-bikes, land-rover baby strollers, etc.) 2. No simple geometry measurement determines what will fit ( http://en.wikipedia.org/wiki/Moving_sofa_problem) 3. It may be easy or hard to bypass the barrier (e.g. by lifting the vehicle over), rotating it sideways. 4. We don't want to imply that these vehicles are *prohibited*. bicycle:trailer=no is easily confused with bicycle=no.
So the question is "what fuzzy tag to use"? We can say with certainty it is an exclusion barrier of some sort: barrier=exclusion With a bit less certainty we can say it is narrow: width=narrow Or simply warn the routers that extra time will be required to pass this point: dismount=geometry bicycle:dismount=geometry Here "geometry" as the dismount reason, to distinguish it from a legal requirement to dismount. There are all sorts of exclusion barriers: motorcycle, style, kissing_gate, turnstile. One of these may imply the type of barrier you have here. Routers should understand that a route with a barrier takes longer than a route without.
_______________________________________________ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging