On Wed, Mar 3, 2010 at 10:45 AM, McGuire, Matthew <matt.mcgu...@metc.state.mn.us> wrote: > The US Census Feature Class Code has descriptions of most types types of > roads. > This would at least tie it to an existing US standard. > > http://www.census.gov/geo/www/tiger/appendxe.asc > > This designation exists in many OSM roads tagged with TIGER:CFCC. However > most roads could definitely use some refinement. We could strip the TIGER > from the tag to just cfcc then refine it from there.
The original TIGER import did in fact use CFCCs to determine highway class. It produced values of motorway, motorway_link, primary, secondary, and residential. We've been refining that for 3 years now. The problem is, this comes from the Census Bureau. They really don't care about a road's functional importance. There are CFCCs for many other things besides roads. And the few CFCCs assigned for road features are essentially based on whether the road is an Interstate, a US route, or a State Route, which doesn't correlate well with a road's functional classification. What's more useful is the Highway Functional Classification System. The name sounds like what we want to do. And it's from the Federal Highway Administration, so they actually care about roads. I've also put forward guidelines for translating HFCS to OSM. <http://wiki.openstreetmap.org/wiki/Talk:United_States_roads_tagging#Discussion> (Sort of buried in a wall of text. I should probably repost those guidelines in my userspace.) -- David "Smith" a.k.a. Vid the Kid a.k.a. Bír'd'in Does this font make me look fat? _______________________________________________ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
