2016-09-06 9:40 GMT+02:00 Nick Hocking <nick.hock...@gmail.com>: > My suggestion is only for intersections. > U_turns along a road are a whole new ball-game and are dependant on inter > carriageway markings that are not normally tagged. I think these turns are > best left to the driver, the map-data and the router should ignore them. >
All intersections in real life are mostly "along a road" in the OSM data model (unless you are exactly at the intersection node in the center of the intersection), because for u-turns the situation is different than for turns, as I have tried to explain. If you tag it on a node, the router could still suggest a u-turn 1mm before or after this intersection node. Additionally, at crossings there are often no carriageway markings (could be country specific). Cheers, Martin
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