On Thursday 21 May 2009, Radomir Cernoch wrote: > Ben Laenen píše v Čt 21. 05. 2009 v 17:54 +0200: > > So while it seems to be a polygon vs tags on ways discussion: > > > > I wonder what people have against using relations to combine all > > roads in one built-up area, or one maxspeed zone, or some other > > kind of zone. It's really the cleanest option and allows for > > additional tags like a name, and it allows everything to be more > > clearly defined, and allows for a method which is much more > > flexible and allows for extended properties. > > How would a typical city look like? All 80 km/h roads in one relation > and all 50 km/h roads in another relation? Or one relation per > suburb?
A typical city here would look like all roads inside the built-up area inside one relation, and when there are roads inside it with another speed limit, tag those ways with maxspeed. And for zone 30's inside built-up areas: each zone 30 will have its relation as well, and due to a simple precedence rule (a relation with zone=built-up area has less precedence than other relations) the speed limits are known there as well. > And what about while countries: all rural 90 km/h roads in one > relation? No, because there's no special property on those roads. Those wouldn't be tagged with anything or wouldn't be a member of any relation if there are no speed limits signed on that road. Ben _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk
