> a) motorway: that's very clear, therea are no or very high limits. > b) "city" areas with limited speed and some restrictions > c) everything else, mostly out of town.
In Czech republic there are different rules for motorways inside "city" area (maxspeed=80) and outside (maxspeed=130). So case d) identifying a) is easy and if we are able to identify what is inside and outside city - b), we can identify roads and motorways inside/outside city. There was similar discussion on czech mailing list. One suggestion is to use administrative boundaries. There was suggestion to use landuse=residential, but that is not possible - often the "city" area is not corresponding to landuse=residential. Suggestion for administrative area is pretty good, but there are still some caveats - sometimes the boundary follow the road and in few cases, sign for "end of village" and sign for "beginning of village" from other side do not match (so basically, one side of the road is "inside" the village, while the other is not.) > (In practice, the test for a "built up area" seems to be "does it have street > lights?".) Test for street lights won't work, many small villages in Czech. Rep. are signes as build-up area (with all the implied speed limits and such), but they don't have street lights at all. Martin _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
