My take on lanes is that it should be the number of continuous lanes along a road. This impacts traffic flow and road capacity which allows routers to make more informed decisions. Turning lanes don't increase overall road capacity. Rather, they prevent it from dropping at busy intersections. As such, I do not split and tag ways where turning lanes are. I could see turning lanes being useful information though but lumping them in with the total lane count actually obscures information. I would rather see them tagged with lanes:turning:left=1 or something like that. That way you know exactly what is happening and routers could easily say "get in the left turning lane.
Toby On Sun, Sep 18, 2011 at 1:10 PM, Nathan Edgars II <nerou...@gmail.com> wrote: > On 9/18/2011 2:07 PM, Anthony wrote: >> >> On Sun, Sep 18, 2011 at 2:01 PM, Nathan Edgars II<nerou...@gmail.com> >> wrote: >>> >>> On 9/18/2011 2:00 PM, Anthony wrote: >>>> >>>> The way is supposed to follow the angled dashed lines. >>> >>> I thought the way was "supposed" to be in the center between the edge >>> lines. >>> Which is it? >> >> I never mentioned edge lines. There generally aren't any edge lines >> in an intersection, are there? >> >> The way is supposed to be in the center of the lanes. So if lanes=2, >> it would be on the dashed line. If lanes=3, it would be between the >> two dashed lines. > > And if lanes suddenly jumps from 2 to 3, then what? > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > http://lists.openstreetmap.org/listinfo/tagging > _______________________________________________ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging
