I think there are five keys to tag a road : 1) its importance in the network (super-primary, primary, secondary ...) 2) its administrative class (motorway, mottorrad) 3) its physical characteristics (example : no at-grade intersections) 4) the width of its lanes 5) its surface
The current tagging system shuffles those 5 keys, "motorway" implies 2) motorway signs 3) no at-grade intersections 4) large lanes 5) asphalt surface, but for 1) it could be super-primary or just primary (think about suburban motorways network). djakk Le mer. 23 août 2017 à 11:14, djakk djakk <djakk.dj...@gmail.com> a écrit : > The thing is, I'm annoyed when there is a primary in the middle of a trunk > road (example : https://www.openstreetmap.org/#map=12/44.3996/-70.9439) > whereas in the U.K. this does not exist ... tagging rules should be as > generic as possible, should not they ? > > > djakk > > Le mer. 23 août 2017 à 01:26, Greg Troxel <g...@lexort.com> a écrit : > >> >> djakk djakk <djakk.dj...@gmail.com> writes: >> >> > Yes Martin, I meant "physical characteristics". In the US, a road is >> tagged >> > "trunk" according to its physical characteristics, as Greg said >> previously >> > in this thread. >> >> That's true, but it's also the case that the roads that are (properly) >> tagged trunk are also worthy of being tagged primary in importance to >> start with, plus becuase of the faster nature of trunk tend to be even a >> little more important. So while choosing between primary/trunk is based >> on physical characteristics, it's not really in conflict with the notion >> of importance. Basically you can view trunk as "primary with honors" >> and not be too far off. >> >
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