[OSM-talk] Bridge on Hiking Trails

[John Smith]

2009/11/26 andrzej zaborowski <balrogg at gmail.com>:
> I assume layer is 0 if I don't add the layer tag.

Yes, which is usually anything at ground level.

> Hopefully this is the correct thing to assume because otherwise things
> will break if I have a bridge with no layer tag and a another bridge

No they won't break, it's just used to order the various ways etc when
they are rendered, if there is nothing currently mapped under the
bridge the layer tag is basically not used as there will only be one
result returned by the query to the database.