On 2013-08-29 20:08, fly wrote : > On 29.08.2013 16:33, Pieren wrote: >> On Thu, Aug 29, 2013 at 4:07 PM, André Pirard <a.pirard.pa...@gmail.com >> <mailto:a.pirard.pa...@gmail.com>> wrote: >> >> >> I was very surprised to come across that tag >> <http://wiki.openstreetmap.org/wiki/Key:turning_radius> >> >> >> I will remove it from the "map features" page. Radius can be calculated >> from the way geometry. It has been used 7 times by one user so far... >> Next comments on this should be forwarded to the tagging list. > It should be placed under proposal name space. > > As it might not be useful for highways for some barriers it is needed > (see other thread about cycle_barrier). For any radius to be calculable by the way geometry, *all* OSM turns should be precisely mapped. The turning_radius tag however contains a presumably correct value. All other turns are presumably suspect. I wanted to make some checks and this roundabout happened to be open <http://www.openstreetmap.org/#map=19/50.57678/5.55340> in JOSM on my desktop. View with Bing layer and see if the roundabout access curve radius is calculable. I didn't go further. I don't claim that these values are useful to know, I say that the same happens probably everywhere.
Finally, I wanted this to be fun and a poor innocent was punished. Please pardon me, Damien :-( André.
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