Le 03/03/2012 08:49, Erik Johansson a écrit :
There is nothing separating this road yet it is mapped as two ways:
http://osm.org/go/0bCzcBhNM--?m
http://goo.gl/KLTpu (Streetview)
IMHO, it's a mistake.
This is done for routers. Imagine you want to go from the marker to
number 117, as it is mapped today the router will know that you can't
go back on the same street directly. How can this be mapped with out
mapping this as two ways, as it's said in the Editing standards:
http://wiki.openstreetmap.org/wiki/Editing_Standards_and_Conventions#Divided_highways
IMHO, there is a lack of a tag saying that the road can't be crossed,
except at crossings e.g. tag:crossable=no.
If it is forbiden to U-turn it at a cross, a restriction relation must
tell it, or maybe a different tag if all crossings are concerned, e.g.
tag:crossable=not_at_all.
--
FrViPofm
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