On Sun, Jan 15, 2012 at 1:21 PM, Mike N <nice...@att.net> wrote: > On 1/15/2012 12:45 PM, Martijn van Exel wrote: >> >> I only map two separate ways when there's a median you can't cross, so >> the two directions are physically separate. By that rationale, it should >> be one way feature. I am curious if other mappers use the same convention. > > > I agree with that method. Since navigation apps area very useful > application of OSM data, visualize driving the road and turning left > anywhere, as opposed to being directed to the next intersection and told to > make a U turn. Similarly when being directed out of a location left onto > the road, directions should be to turn left instead of right+U turn when > there's no driving median separator.
The only exception I'd make is that if there are markings or signs explicitly prohibiting use of a paved, flat median (for example, in many US states, a lengthy cross-hatched median or a median with double-yellow lines on both sides is legally a divider in addition to not being a travel lane) separate ways should be mapped, since legally you can't turn across those medians, by analogy with "managed HOV" lanes like those on I-635 in Dallas where you're only allowed to enter/exit the HOV at designated points even though there is no physical barrier and it's all one giant expanse of pavement. Chris -- Chris Lawrence <lordsu...@gmail.com> Website: http://www.cnlawrence.com/ _______________________________________________ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
