On 23 Apr 2009, at 12:34, Tobias Knerr wrote: > SteveC wrote: >> On 23 Apr 2009, at 12:17, Teemu Koskinen wrote: >>> If both from and to ways continue after the via point and neither is >>> one-way, there's two possible ways to interpret it: the restriction >>> could apply when coming from either of the ends of the from-way. >>> This of course doesn't matter if there is similar restriction coming >>> from both directions, but that's not nearly always the case. And >>> even if there is symmetry in the real life restrictions, it's not >>> appropriate in my opinion to map those with just one restriction. >> >> eh? don't you assign direction by saying 'from' and 'to' ? > > |A > | > | > x| B > -------*------ > | > | > | > > Imagine this situation, ways A and B with a common node x. You are > moving on A from north to south and are not allowed to turn into B. If > you create a restriction "no_left_turn from A to B via x", you will > also > prevent that cars moving from south to north on A can turn left. > This is > usually not intended.
Ah gotcha! Ok so in that case... why don't we make best practice to split your way A in to two directions, rather than hundreds of little ways? Best Steve _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk
