On Sun, Mar 30, 2014 at 02:34:07PM +0200, Gerd Petermann wrote:
BTW, I accidentally loaded a relation somewhere in Russia and downloaded the surroundings. There were lots of no_u_turn on every crossing of a major road. That kind of micro-mapping does not exist over here; I guess that mappers expect people to apply common sense and not make a u-turn as soon as the navigator suggests it, no matter what.
I found an example of this in Finland. IMO, these relations should simply be ignored, maybe emitting a NOTE or INFO (not WARNING): 2014/04/01 08:03:24 SEVERE (RoadNetwork): 63240002.osm.pbf: Turn restriction http://www.openstreetmap.org/browse/relation/1785864 (at http://www.openstreetmap.org/?mlat=60.224055&mlon=24.995477&zoom=17) check special case from = to arc Normally the navigator should not generate routes where you do a U-turn like this. Even if it did, the driver should know to make the U-turn at the next convenient place where it is both practical and not forbidden. Marko