2008/11/28 Martin Norbäck <[EMAIL PROTECTED]>: > Hi everybody, > I'm sure this has been discussed in length before, but I cannot seem > to find a good way to search the archives. Anyway, I will present my > thoughts here and you can respond or be quiet :) > > I'm trying to fix at least two issues I have. > > a) A way that is sort of one-way but allows buses and taxis in the > opposite direction. > > Don't know how to tag them, currently I've just ignored buses and > taxis and tagged them oneway=yes.
for the cycling equivalent we have cycleway=opposite_lane. I've been arbitrarily doing psv=opposite_lane for some bus lanes in London, which may or may not be described as a complete bastardisation of the access tag... your solution below sounds more sensible to me. > > b) 2+1 ways as we call them in Sweden, they are normal ways but have a > small fence in the middle and 2 lanes on one side and 1 lane on the > other side. They look like this: > http://www.vv.se/filer/Vägprojekt/3-Falt.jpg > > Now, I want a good way to tag them, and using lanes, you can maybe say > lanes=3, or lanes=2+1, lanes=2,1, lanes=1+2, lanes=1,2, ... but how to > interpret that. I'd rather not resort to mapping these as two ways, as > they are in effect one way, just preventing head on collision. They > have crossings like a normal road, no ramps, acceleration fields, etc. > > I would like a more general mechanism, but yet simple. I propose > something like this > > forward:lanes=2 backward:lanes=1 > (for the sake of the renderer you could also specify lanes=3) Seems reasonable except for the divider -- I'd do that road as two separate ways. We have some roads in the UK which gain a lane and look a bit like that, but with no direction divider (usually positioned to allow easy over taking of lorries on hills). Your tagging solution might work for these quite well. Dave _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
