[Tagging] Marking dual carriageways

[John F. Eldredge]

I am confused. You state that the road is divided into two carriageways, that neither carriageway is one-way, and also that each carriageway is one-way.  How can a given carriageway be both one-way and not one-way at the same time?


On July 10, 2014 5:20:16 AM CDT, Mateusz Konieczny <matkoniecz at gmail.com> wrote:
> 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.
> 
> I am currently thinking about good name for this tag and whatever
> there is
> possibly to achieve this result solely by processing OSM data
> (processing
> is probably necessary anyway to catch cases like
> https://www.openstreetmap.org/way/182138211 ).
> 
> 
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-- 
John F. Eldredge -- john at jfeldredge.com
"Darkness cannot drive out darkness; only light can do that.  Hate cannot drive out hate; only love can do that."
Dr. Martin Luther King, Jr.