[OSM-talk] Layer transitions

[Martin Koppenhoefer]

2009/7/29 Harald Kleiner <e9625163 at gmx.at>:
> Hi!
>
> I want to talk about this page on the wiki describing how to map tunnels
> correctly:
> http://wiki.openstreetmap.org/wiki/Tunnel#How_to_Map
>
> Especially the last paragraph causes headaches to me:
> "If the tunnel ends in a junction you'll need a small un-tunneled way
> between the end of the tunnel and the junction"
>
>
> Where does this rule come from?
>
this might be a logical topic: we are mapping the center of the road.
The tunnel can not end at the center of the crossing road, because
this road itself is not a tunnel. (you will have at least half the
width of the crossing road untunneled).

cheers,
Martin