On Wed, Sep 2, 2020 at 4:52 AM Robert Whittaker (OSM lists) < [email protected]> wrote:
> On Tue, 1 Sep 2020 at 21:33, Mike Thompson <[email protected]> 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". > A variation on that might work: if OHV > 50" is not allowed => ohv = yes + ohv:conditional = no @ (width > 50")
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