[Talk-us] Turns on bidirectional highways

[Eric H. Christensen]

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On Sun, Dec 15, 2013 at 07:36:40PM -0500, Richard Welty wrote:
> On 12/15/13 3:27 PM, Eric H. Christensen wrote:
> > I've been searching for some documentation to explain an intersection
> > that has several turn restrictions that need to be mapped for routing
> > to work properly.
> >
> > The intersection in question is where Riva Road intersects with West
> > Street[0]. Traffic flowing towards West Street need to make an early
> > decision (at the first split) as to whether they are going left or
> > right at West Road. I've been able to add turn restrictions on the
> > right-most intersection showing two lanes turning only right. I'm
> > trying to figure out how to show the bottom intersection but with it
> > being bidirectional I'm not sure how to do so. Any help?
> i don't clearly understand what restriction is troubling you, but be
> aware that

I guess I was just trying for a simple, elegant solution that wouldn't cause the source to look... horrible.  I suspect that doesn't exist here, though.

> 1) there's no problem splitting ways if it facilitates adding
> a turn restriction

Okay, I'll probably end up doing that, then.

> 2) you have some latitude as to how you place the restriction
> as routers will have some look ahead. placing a left turn restriction
> on the left side where Riva meets West may be sufficient guidance
> for routers
> 
> 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?

Thanks,
Eric
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