[OSM-talk] zones for motorway/in town/outof town?

[Guenther Meyer]

Am Thursday 21 May 2009 schrieb Cartinus:
> The ringroad does not have the tag maxspeed=80 !!!
>
> It has a maxspeed of 80 km/h because that is the default maxspeed of
> roads "out of town" in that country. "Out of town" was one of the three
> zones in the initial idea. It is defined by the country polygon.
>
>
> The whole idea behind tagging zones is that you wouldn't have to tag
> maxspeed on the road where it is not explicitly signed.
exactly this.

> By forcing the 3D
> reality into a 2D model you have to tag both the explicit signs and
> anyplace the model breaks down. Ergo: You need a better model.
>
it's easily doable with the current model, if you tag the ways directly with 
the zone-tags, and not via "inside a polygon".
if you also add the country to the tag, which i recommend, there is no need to 
evaluate any polygons, only the ways, to get the information needed.

the tag then would be something like "zone:traffic = CZ:out_of_town".



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