2014-07-10 12:20 GMT+02:00 Mateusz Konieczny <matkoni...@gmail.com>: > I am thinking about marking tagging roads with separate carriageways. I > want to create map with oneway roads, but in OSM data roads with separate > carriageways that are not oneway are frequently represented as separate > ways, both tagged as oneway. > > Adding tag that that would describe way as part of dual carriageway, with > twin road leading in opposite direction would allow to solve this problem.
you could also use the area-relation for this (and make this routable for pedestrians without explicit connections, define implicitly the barrier between the 2 carriageways, etc.): http://wiki.openstreetmap.org/wiki/Relations/Proposed/Area cheers, Martin
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