SomeoneElse <lists@...> writes:

> 
> I'd always assumed that the correct way to map turn lanes is via:
> 
> http://wiki.openstreetmap.org/wiki/Key:turn:lanes .
> 
> However, some mappers in the UK* have started mapping each individual 
> lane as a separate parallel road.  Here's an example:
> 
> http://www.openstreetmap.org/note/267402#map=19/53.03296/-0.52524&layers=N
> 
> That note was obviously written from the point of view that mapping a 
> single carriageway road as one way with appropriate turn lanes tags is 
> "correct"; whether it is or not is the question that I'm asking here.
> 
> So - should we map a dual carriageway as two parallel roads and a single 
> carriageway as one (with appropriate turn lanes) or is it equally valid 
> (or even perhaps better) to map each turn lane as a separate parallel 
> road, even if there's nothing but a broken line of paint between them?

I have always reserved multiple ways for non-traversable (physically blocked
to crossing traffic) multiple carriageways[1], use for single carriageways
is wrong, not more detailed.

[1] My mapping: http://www.openstreetmap.org/#map=18/51.45778/-0.32001

--
Andrew


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