[Talk-us] Turns on bidirectional highways

[Eric H. Christensen]

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On Sun, Dec 15, 2013 at 09:42:36PM -0500, Richard Welty wrote:
> On 12/15/13 9:23 PM, Eric H. Christensen wrote:
> > On Sun, Dec 15, 2013 at 07:36:40PM -0500, Richard Welty wrote:
> > >
> >
> > > 3) you can use a way as a via, not just a node.
> >
> > Not sure what you mean by that. Can you point to an example, please?
> consider a u-turn on a motorway with a no u-turn sign posted and maybe
> an emergency vehicles only sign. you need a no u-turn restriction, but the
> connecting segment of road is typically a way with 2 nodes (one node on
> each of the motorway ways.) so you 1) split each of the motorway ways
> at this node, and set up 2 no u-turn restrictions, with the via element
> being the short 2-node way between the motorway ways.

Okay, that makes sense.

> you could use this elsewhere, although i think for your example it's not
> really necessary, an only-left-turn restriction where the left leg of Riva
> meets West is probably sufficient.

I went in and made changes that appear, according to GraphHopper, to route correctly now.  

Thanks,
Eric
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