On Tue, Oct 19, 2010 at 05:29:04AM -0700, aighes wrote:
All in all I think, it is useful, to render a tunnel differnt than a normal street.
Sure, it could be. On the Finnish OSM forum there was a recent discussion how to tag cycleway underpasses. The tunnel=yes tagged ways under highways sometimes are roads under bridges, and sometimes something that could be considered a tunnel (narrow walls) by a liberal definition of tunnel. "Real" tunnels are much longer than they are wide, aren't they? I would rather omit these "useless" tunnels from the map display, at least as long as one can't easily select which layers to display on the map. There are many access=private tunnels under cities that the general public is not aware of: wastewater treatment, access tunnels to railway tunnels, tunnels for emergency vehicles, you name it. It would be confusing to see them as ways on the map. That's why I hid the underground railways in the default style. Marko