[Tagging] Mismatched Level of Detail in highways vs. other elements
dieterdreist at gmail.com
Tue Apr 9 11:13:05 UTC 2013
2013/4/9 Martin Atkins <mart at degeneration.co.uk>
> Right. It seems like the schematic vs. detail tagging situation is pretty
> good for streets if you accept the area:highway proposal:
> Under this proposal you have area:highway as the detail element, and the
> existing highway ways as the routing network element, so the two tagging
> schemes can easily coexist without trampling one another.
there is also the area-relation proposal which aims at mapping (beside
other) implicit highway polygons:
The idea is that you only map "parallels" to the highway way (at the outer
border of the sidewalk and eventually the kerbs) and then connect the two
sides via a relation. This way you don't need the traversing ways (usually
used to close the polygon on the small sides) which really helps a lot to
avoid misconnections of the routing graph and the highway-areas. Until now
this type of relation is not supported, but it is not really complicated to
do it. To help the renderers I guess that the direction of the two parallel
ways should be the same (otherwise you risk to get X-like connections).
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