[OSM-talk] Turn left restriction on two way highways

[Nic Roets]

On Fri, Dec 31, 2010 at 4:11 AM, Eugene Alvin Villar <seav80 at gmail.com>wrote:

> On Fri, Dec 31, 2010 at 7:12 AM, Steve Doerr
> <steve.doerr at blueyonder.co.uk> wrote:
> > On 30/12/2010 22:50, Diego Woitasen wrote:
> >
> >> Yes, we'll map the restrictions. I reviewed the local law and
> >> sometimes you can turn left so we must tag the restriction on every
> >> case.
> >
> > Does it have to be every intersection, or could you tag a default on the
> way
> > or relation and then tag the exceptions?
> >
> > How would routers feel about that?
>
> I remember a suggestion like this a long time ago. Tagging a way with
> restriction=no_left_turn (especially if it has a oneway=yes tag) would
> specify a default for that particular way only. This is much easier
> for routers or preprocessors to adopt.
>
>
I think before we had relations, I suggested it as a way of specifying turn
restrictions without relations.
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