[OSM-talk] Two different ways with the same nodes?

edodd at billiau.net edodd at billiau.net
Thu Feb 11 04:31:38 GMT 2010

> Hello,
> Is it allowed (or intended) that two different ways share the same
> edges? For example:
> there are nodes a, b, c and two ways A, B with:
> A = (a, b, c)
> B = (c, b, a)
> While loading some osm data in a database i realized that there are some
> ways with this "problem", so
> is this a correct feauture or a mapping error?

absolutely correct

For example where an admin boundary follows the coast
one way for the coast
one way for the admin boundary

if we have joined ways we are getting renderer problems
so the au mob have decided to maintain duplicate ways in those circumstances.

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