[OSM-newbies] more rendering questions

[Claudius Henrichs]

Robert Helvie:
> (...)  Rather odd
> if you ask me, and something I think the renderer should be able to
> handle without a layer tag. Is this a one-off, or are layer tags
> essential now? For every road, river, and way?

Layer tags for ways crossing with a bridge or tunnel are essential (and 
have always been) for every non-areal type of high-, rail-, run- and 
waterway (I might have missed some sort of possible crossing way-types).

Regards,
Claudius