On Fri, May 11, 2018, 02:56 Martin Koppenhoefer <dieterdre...@gmail.com> wrote:
> > > sent from a phone > > > On 11. May 2018, at 06:44, Marc Gemis <marc.ge...@gmail.com> wrote: > > > > When the "lanes" tag was introduced the community choose to only count > the "full width segments for motorised traffic". > > > what is the definition for “full width”? Is a road with 1,8 width lanes=0? > width=2.4? Given that maximum vehicle width is 2,50 it would seem sane to > assume full width to be at least 3,00 m. > The MUTCD allows motor vehicle lanes to be as narrow as 9'0" for low speed applications like alleyways and residential streets. Meanwhile, new on-street bike lanes in Tulsa and Portland that I've seen built in the last couple years are a minimum of 7'0" plus at least a 2'0" buffer, but because streets in the 30-40 mph range have to have 11'0" or wider lanes, often it's a 7'0" bike lane with buffers to encourage riding down the middle of that space, further from the door zone or faster traffic. Width is a pretty lousy criteria for excluding lanes, especially when lane width tagging is a thing. >
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