[Talk-us] Creating dual-carraigeways where there are existing oute relations

[Marc Gemis]

JOSM has functionality to copy relations from one way to another. Of
course, you will still have to delete the relations that hold for the
other direction.
There is also a plugin that helps you check public transport
relations, see https://wiki.openstreetmap.org/wiki/JOSM/Plugins/PT_Assistant

regards

m

On Wed, Feb 15, 2017 at 4:01 PM, maning sambale
<emmanuel.sambale at gmail.com> wrote:
> Hi,
>
> Our team at Mapbox has been adding turn lanes in several cities in the
> US. In some cases, bi-directional roads need to be converted to
> dual-carriageways when there is a physical separation.  However, we
> are finding it difficult to create dual-carriageways since most major
> roads already have route relations and there is a danger of breaking
> route relations.
>
> We are documenting the process here:
> https://github.com/mapbox/mapping/issues/180#issuecomment-279367407
> Would love the community's inputs on how we can avoid relation breakage.
>
> --
> cheers,
> Maning Sambale
> Data, Mapbox
>
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