Michigan has a similar system, but not very many counties have opted into the system.
Illinois' system is unique per county, so US:IL:Kane is what I'll be going with. I even spotted a new route tonight while heading to a hardware store, so I might make that the guinea pig. -- Kristian M Zoerhoff On Apr 10, 2011 7:23 PM, "Andrew Cleveland" <evil.salt...@gmail.com> wrote: > On Sun, 2011-04-10 at 17:02 -0700, Alan Mintz wrote: >> At 2011-04-10 16:28, Nathan Edgars II wrote: >> >On 4/10/2011 7:25 PM, Alan Mintz wrote: >> >>At 2011-04-10 14:00, Kristian M Zoerhoff wrote: >> >>>What's the consensus for county roads in the US? >> >> >> >>I don't know what the consensus is. >> >> >> >>County roads in California are of the form [A-Z][0-9][0-9]. I tag Orange >> >>County route S18 as: >> >> >> >>network="US:CA:Orange" >> >>+ ref="CR S18" >> > >> >How does this work with routes that cross county lines? California has a >> >statewide numbering system, with the letter roughly representing the part >> >of the state. >> >> Yup - that is problematic. I think, when I marked Orange County S18 last >> year, I didn't see any other county road tagging to go by. >> http://www.cahighways.org/county.html shows that there are some occurrences >> of this. I apparently expected to break them at the county lines, I guess, >> so as to agree with signage. That is, Orange County S99 would be a >> different route than San Diego S99. network="US:CA:Orange;US:CA:San Diego" >> on the relation seems workable. >> >> It's almost like they defined super-groups of counties identified by >> those letters. I'll have to crunch that table to see if that's the case so >> we could have network=US:CA:S + ref="CR S18". Maybe add an is_in:county tag >> to the individual segments to avoid losing that important info. >> >> I realize this is kind of scattered. On my way out the door. >> >> >> -- >> Alan Mintz <alan_mintz+...@earthlink.net> >> >> >> _______________________________________________ >> Talk-us mailing list >> Talk-us@openstreetmap.org >> http://lists.openstreetmap.org/listinfo/talk-us > > Hi, > > That's correct that the county routes are grouped into "zones" which > don't necessarily coincide with counties. There are nine zones (A, B, D, > E, G, J, N, R, S). > > There are some county route relations here: > http://wiki.openstreetmap.org/wiki/California/State_Highway_Relations#County_Highways > though it's not set in stone obviously. I guess either US:CA:[zone] or > US:CA:CR as suggested would work. > > > > _______________________________________________ > Talk-us mailing list > Talk-us@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-us
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