[Tagging] Marking dual carriageways

Mateusz Konieczny matkoniecz at gmail.com
Thu Jul 10 21:07:57 UTC 2014


Road itself is not oneway as it has two one-way carriageways in opposite
directions. Carriageways are mapped in OSM as separate one-way ways.


2014-07-10 21:32 GMT+02:00 John F. Eldredge <john at jfeldredge.com>:

> 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.
>
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