[OSM-talk] Ditches

[Ian Dees]

On Tue, Dec 15, 2009 at 6:52 AM, Richard Mann <
richard.mann.westoxford at googlemail.com> wrote:

> bridge=yes is so that people can render nice parapets
>
> I'd agree that layer tags should not be required for water/highway
> crossings. Keepright should keepquiet!
>

Although nothing is "required" in OSM, the layer tag always helps on a
bridge because you could have multiple bridges passing each other (as in a
highway interchange). In that case, the layer tag specifies at what "layer"
in the 3rd dimension the bridge exists.

See for example http://osm.org/go/ZVMvmEVc
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/talk/attachments/20091215/e4aacdcc/attachment.html>