On 20 August 2012 13:25, Colin Smale <[email protected]> wrote: > Isn't that what turn restrictions are for?
No. Turn restrictions restrict from which highway object to which highway object one can traverse, they can't tell whether you're allowed to make a left or right turn at the start of your route. /Markus > > Colin > > > On 20/08/2012 13:10, Markus Lindholm wrote: >> >> On 20 August 2012 12:57, Markus Lindholm <[email protected]> >> wrote: >>> >>> On 20 August 2012 09:39, Elena ``of Valhalla'' <[email protected]> >>> wrote: >>>> >>>> On 2012-08-19 at 14:09:18 +0200, Markus Lindholm wrote: >>>>> >>>>> In my opinion it's best to treat legal separation (i.e. solid_line) >>>>> the same way as physical separation, i.e. create two separate >>>>> highways, one in each direction. >>>> >>>> This doesn't correspond to reality: I believe that an emergency >>>> vehicle can cross a solid line, while of course they would >>>> have problems with a physically separated road. >>> >>> I consider legal restrictions to be part of reality. Also consider >>> that a physical separation might be nothing more than a 20cm high curb >>> that could be as easy to cross for an emergency vehicle as a painted >>> line. >> >> One other aspect: it would not be possible to create correct routes >> from an address that's in a middle of a block where the the street has >> lanes in both direction but that are legally separated. Now if the >> shortest route would be to turn left (in a country with right hand >> traffic) but the legal route would require to start the trip by going >> right, there's no way to express that without having to separate >> highways, one in each direction. >> >> /Markus >> >> _______________________________________________ >> Tagging mailing list >> [email protected] >> http://lists.openstreetmap.org/listinfo/tagging > > > > _______________________________________________ > Tagging mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/tagging _______________________________________________ Tagging mailing list [email protected] http://lists.openstreetmap.org/listinfo/tagging
