[Tagging] OHV greater than 50 inches (wide)

[Robert Whittaker (OSM lists)]

On Tue, 1 Sep 2020 at 21:33, Mike Thompson <miketho16 at gmail.com> wrote:
> In specifying access constraints for the roads it manages, the US Forest service makes a distinction between ATVs, highway vehicles, and "OHVs > 50"."
> The first two categories correspond to the tags motorcar=* and atv=* I think, but I have not been able to find an existing tag that corresponds to "OHVs > 50"."  There is an ohv=* tag, but it seems to apply to all OHVs regardless of width as well as motorcycles.

Have you looked at conditional access restrictions:
https://wiki.openstreetmap.org/wiki/Conditional_restrictions ?

If ohv=* is understood as an access tag (though it doesn't appear at
https://wiki.openstreetmap.org/wiki/Key:access ), then you could e.g.
do something like ohv = no + ohv:conditional = yes @ (width > 50") to
allow OHVs only if they are wider than 50".

-- 
Robert Whittaker