Tom Hughes wrote: >>> I think it would be better to use the layer tag rather than the tunnel >>> tag, but I agree that the whole thing should be railway=subway. >> I prefer tunnel to indicate tunnels. In addition, layer=-1 would be useful >> for where the underground goes in cuttings and has roads cross it on >> bridges, despite not being in a tunnel itself - the Met does this around >> Farringdon, as an example.
I don't consider subways to be "in a tunnel"; I consider them to be simply below (most) everything else. Besides that, the roads as you say are on bridges; the subways aren't in tunnels. > Agreed - layer says nothing about whether something is above or > below ground. It is purely about establishing a z-ordering for > objects. If it's in a tunnel we should say so explicitly. That doesn't contradict what I said. Both from a rendering, and a "reflection of real life" standpoint, subways are /below/ the other stuff (on a lower layer), not just in a tunnel. -Alex Mauer "hawke"
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