[Tagging] [Talk-us] stop signs

[Peter Wendorff]

Am 27.10.2010 17:24, schrieb Anthony:
> Yeah, that's pretty much what I said above.
>
> http://wiki.openstreetmap.org/wiki/Proposed_features/compass
>
> I vote for highway=stop + compass=X on the way at the stop line plus
> traffic_sign=stop + compass=X at the actual stop sign location.
> Actually, I don't "vote" for anything.  The tag highway=stop is
> already being used this way (sans compass=X), the tag
> traffic_sign=stop is the obvious extension of traffic_sign=*, and
> compass=X is unlikely to interfere with anyone else's tagging
> (although if there is already a tag for this then I'll use that
> instead).  The use of compass=X is obviously optional, but it gives a
> way to be explicit in the normal case and gives a way to correct the
> default in the exceptional case.  Without editor support it probably
> won't be heavily used, but oh well.  In the meantime, if someone wants
> to use the tag stop:direction=forward/backward, a bot could go through
> the db periodically and fix that into compass=X (when there is only
> one way, and the direction of the underlying way has not changed since
> the tag was added).
-1
I would prefer the forward/backword against compass. To deal with 
forward/backward neither an editor nor an application has to deal with 
the real geometry, and the mapper don't need to calculate the heading.

Another point is: if forward/backward is used, a mapper can see with 
common knowledge, that tagging a stop sign at the intersection node is 
no good idea. Compass could in theory be tagged at the intersecting 
node, too. It's possible and with resolution of some meters in mind it's 
"exactly enough" for some people. Drawback would obviously be to tag 
more than one heading direction at once, but I'm sure there will be 
people tagging compass=X,Y as multivalue property.

regards
Peter