On Sun, Feb 01, 2009 at 10:55:56AM -0500, Greg Troxel wrote: > > Christopher Schmidt <crschm...@metacarta.com> writes: > > > MassGIS does not encode the direction. Oneways which are potentially > > wrong are marked with a FIXME note to fix the incorrect directionality. > > (I believe it is 'FIXME: Unconfirmed oneway'.) MassGIS pays NavTeq for > > routing data, and does not have a 'free' source of Oneway > > directionality. > > OK, so it's either manual, or having something that looks at the db and > finds pairs of ways tagged as motorway/primary/secondary that go the > same way and are labeled FIXME and flips on of them, assuming they are > laid out normally, changes FIXME tag to auto-fixed, and then maybe > propagates this to ramps. That sounds like a fair bit of work, maybe > more than hand editing them all.
It's also not just motorways -- that's just the most obvious. ALl of Cambridge/Somerville has been done by hand, and the same will be true of most other towns that have one way roads inside of them. The split-directions roads are a case which is solvable technically, but since so many others aren't, I've always ust figured it'll get changed when peole go through the rest of the roads in an area. > > The classifications are based on the roads data, which is maintained by > > the executive office of transportation. I would assume that the > > classification is based on the legal classification of the road, rather > > than on usage. > > OK, so it's then proper in osm terms to adjust it to the usage/physical > method? Would you call 2 from alewife to 128 a motorway? (I'm just > checking my understanding of the norms before making changes.) I don't know. I just import data, I've never mapped anything out. :) Others might be able to comment on it more. Generally speaking, I'd probably refer to that stretch of road the same way I would to an interstate; I don't know what that translates to, but changing it to match that makes sense to me. -- Chris > (For those not in MA, here's an example interchange on this highway > > http://www.openstreetmap.org/?lat=42.42188&lon=-71.23007&zoom=16&layers=B000FTF > ) -- Christopher Schmidt MetaCarta _______________________________________________ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
