Mario Salvini wrote: > Richard Bullock schrieb: >> Am I missing something, or can we not just assume that e.g. >> >> each highway=residential has a speed limit consistent with urban areas in >> that country - unless explicitly tagged otherwise >> >> e.g. in the UK, highway=residential would be 30mph (48.28032km/h), unless >> tagged as something else. >> >> each highway=trunk, primary, secondary etc. has a default speed limit >> consistent with rural areas in that country - unless tagged otherwise. >> >> each highway=motorway has a default motorway speed consistent for that >> country. >> >> That way, we only need to tag major through routes in cities, and rural >> roads which do not have the usual national speed limit. >> >> The same thing applies for access restrictions. We don't need to tag that >> roads are accessible for cars - that should be assumed unless tagged >> otherwise >> > highway=residental _isnot_ the same as "build-up-area in the meaning of > traffic laws". > E.g. commercial- or industry-areas which are "in town" by traffic > law/signs don't have "residential roads". > > And thats just one example.
BUT highway=xxx does define the type of road, and if residential is maxspeed=30 and safe_residential is maxspeed=20 by default that makes perfect sense. service roads may well have a lower speed limit, even within an 'in_town' area. It's not unusual to have a 15 mph limit on these roads because of activity such as unloading taking place on them. I think the polygon idea HAS been kicked into touch now, but there IS possibly a need for additional tag to cover the other traffic regulation information so far put forward, and using that to REPLACE highway tags ( as currently suggested on the wiki page ) is a no no! SPEED information should be handled using the existing maxspeed + defaults relating to the road type, which MAY have a country related element to them as again listed on the relevent wiki page ( Links were posted earlier ) -- Lester Caine - G8HFL ----------------------------- Contact - http://lsces.co.uk/wiki/?page=contact L.S.Caine Electronic Services - http://lsces.co.uk EnquirySolve - http://enquirysolve.com/ Model Engineers Digital Workshop - http://medw.co.uk// Firebird - http://www.firebirdsql.org/index.php _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk
