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

[MP]

>  > The problem now is that you cant actually work with polygons as for
>  > example a motorway could pass over a zone-30.
>
> Sorry, I maybe didn't make myself clear. "Polygon" rules do not apply
>  for motorways. Is there any country, where a highway inside a city has
>  different speed limit from the highway outside of the city? Even if yes,

For example Czech republic (80 km/h highways inside city, 130 km/h
outside - Law 361/2000, paragraph 18, part 4)

In the few rare cases where highway goes over/under some zone with
speed limit, the highway can either:

1) have explicitly set speed limit

2) you can have information about this exception - relation saying
that some ways (the highway) does not belong to the zone - relation
can be used for that.

3) The zonal restriction can contain information about types of roads
in the polygon on which it should be applied (so saying that the zonal
restriction is valid only for highway=residential and living_street,
would exclude also primary/secondary road going through that zone, so
it won't need to be tagged explicitly if the limit is not applied on
it)

Martin