[Tagging] Tunnels and bridges

[Pieren]

On Thu, Jan 31, 2013 at 5:13 PM, Peter Wendorff
<wendorff at uni-paderborn.de> wrote:

> For data consumers supporting the new it follows: If there's no bridge-area
> (e.g. man_made=bridge) defined, but there's a bridge=yes, I have to assume
> an error, I might report that as such and/or I should fall back to assume a
> bridge-area at/around the way, which is simple by creating a rectangle with
> the assumed bridge width around the way.

For me, it's clearly duplicates.
Like keeping the "amenity=parking" node when you draw the parking
polygon. Or keeping "abutters=residential" on the highway when you
draw the "landuse=residential" polygon.
Or it's just for backward compatibility, like keeping "natural=water"
on "waterway=riverbank" until mapnik stylesheet rendered correctly
riverbanks...

Pieren