On Wed, 20 Feb 2019 11:30:07 -0300 Fernando Trebien <fernando.treb...@gmail.com> wrote:
> On Wed, Feb 20, 2019 at 10:52 AM Greg Troxel <g...@lexort.com> wrote: > > The real problem is that if unclassified is more important than > > residential, what to do with roads that do not merit unclassified > > but do not have primarily residential landuse? > > That's why I think classification should be done by primary > function/purpose, not by a fuzzy (and controversial) concept like > importance. "Importance" begs the unanswered questions: important for > what? for whom? Here in Washington State, there are two possible "non-fuzzy" classification schemes: 1) By usage rules: Motorway/arterial/other. This isn't very fine-grained, and doesn't give you a way to distinguish Sprague Avenue (five lanes one-way) from Queen Avenue (two-way, no lane markings) from WA-20 (major cross-state highway) from WA-127 (exists only to avoid a hundred-mile detour when crossing the Snake River). 2) By operator: Interstate highway/US highway/state highway/county road/other. This is fine-grained but misleading: for example, WA-520 (a state highway) is a multi-lane divided grade-separated high-speed controlled-access road -- in short, an Interstate in all but name. (There's also the state highway department's internal highway classification system that maps reasonably well to OSM's system, but you'd have to copy it from their maps -- there's no on-the-ground evidence that something is an "Urban Major Arterial" or a "Rural Minor Collector".) > > Finally, I'd suggest in the US treating unclassified and > > residential as exactly the same in importance, because we have no > > real notion of unclassified roads like the UK. > > Do you have any locally-defined highway system that approximately > matches the idea of "a system of highways that generally connects > place=hamlet"? That would be the state highway system: nearly every incorporated community and most of the unincorporated ones are served by at least one state highway. But see the above examples for why calling these roads "unclassified" is a bad idea. (And note that all of the above is only fully applicable for Washington State. Other states will have other systems, though at least in the western United States, they don't vary by much.) -- Mark _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
