Karl Newman wrote: > Okay, for trunk, how about *mainly* ramp access, with grade-level > crossing access to side roads permitted, but without traffic controls on > the highway where they meet?
Hmm, I don't think the ramp access should be a requirement. Agreed on "without traffic controls on the trunk highway at intersections" though. I can think of two highways in my area (central Wisconsin) that fall under this; both are state highways. > Re: County roads as secondary, I was thinking mostly of speed limits as > a guideline for the classifications. There aren't a whole lot of > numbered county roads here in California, so I don't have much to judge > them by. Around here the county roads vary widely in speed limit, anywhere from 30 to 55 mph. They all seem to be two-lanes (total, not per-direction), with fairly narrow shoulders. > So you would place unclassified above tertiary? I haven't spent much > time looking at road classifications when I've been in Europe (I > probably would now since I've joined OSM), but that seems to go against > the existing guidelines. No...I use tertiary as you describe "missing_tag": "residential branch roads which are main roads through subdivisions..." though, I don't see why it should be exclusive to residential/subdivision areas. I noticed now there's also a difference in your usage of unclassified; As I use them, these are ordinary, unremarkable roads; if they were in a residential area, they'd be highway=residential. So I put "unclassified" down a level from where you do, in between your missing_tag and residential. The first part of your description of unclassified seems to fit there, as well: "urban commercial district or rural low-density housing..." I suppose we differ in that I feel that tertiary can scale: in a residential area, it's the "main roads with fewer driveways", in a commercial or industrial area, it's the main roads as well, and in rural areas it's main roads which are not county highways. I would not use "direct driveway access" as a factor for distinguishing highways. Roads of all classifications except motorway may have direct driveway access, especially in rural areas. -Alex Mauer "hawke" _______________________________________________ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk-us