On 28/07/2015, Martin Koppenhoefer <dieterdre...@gmail.com> wrote: >> Am 28.07.2015 um 11:02 schrieb Pavel Zbytovský <zbytov...@gmail.com>: >> >> 1) technically the small secondary roads part works as primary road >> network. So we would suggest a tag similar to works_as_highway=primary. Do >> you think its ok? Any suggestions? > > > from what you have written it seems to me that these are tagging errors: if > a road "works as primary" it should get the primary tag in osm. > > Country specific deviations that result from following different criteria > (like road maintenance class / entity, or physical criteria, etc.) should be > "repaired" (map those properties differently and not in the highway tag) and > the highway tag should be used like it is elsewhere.
Sorry but no, too simplistic. A lot of local OSM communities follow the official national road classification where possible. For example in Ireland, any ref=Nxx road with xx<51 is highway=trunk, and switches to highway=primary when xx>50. http://wiki.openstreetmap.org/wiki/Ireland/Roads This makes sense because it is expected by any Irish driver and map user. While it does result in some road classification changes without any physical changes, this just reflects the administrative reality. > OSM is a global dataset and following everywhere the same criteria to > determine the highway tag is important for a smooth usage of the data across > borders. That ideal doesn't match the practical reality. highway=primary has a very different definition between Ethiopia and Germany, by necessity. A global uniform standard for highway=* would be pretty unusable. But we do use a collection of local standards, so we have local consistency (hopefully at least at the national level), which is the most important thing. That said, there are plenty of tags other than highway that are usefull and objective: maxspeed, lanes, width, traffic lights, speed bunps, and even surface (but that one is getting subjective again). Go map them, in that rough order of priority. They are used by routing software and solve the OP's question for routing. If you want to use those tags for rendering, talk to your map style developer (you'd need to do that anyway to make use of works_as_primary). _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
