[OSM-talk] Turn restriction docs

[Nic Roets]

On Sat, Nov 29, 2008 at 10:04 PM, Scott Atwood
<scott.roy.atwood at gmail.com>wrote:

> Perhaps someone who understands how this feature works should add a few
> examples of ways that have been properly tagged as turn restrictions.
> I recently added several turn restrictions in this vicinity, and I admit I
> was quite confused by the documentation, but I did the best I could.  After
> this discussion I am even less sure I did it correctly.  Perhaps someone
> could take a look at what I did wrong and it could serve as an instructive
> example for learning.  I'm OK with being used as a public example.  :)
>
>
> http://www.openstreetmap.org/?lat=37.33944&lon=-121.87191&zoom=17&layers=B000FTF
>

This one is quite easy to fix.
http://www.openstreetmap.org/browse/relation/53025
Just add http://www.openstreetmap.org/browse/node/65529280 as the via node

Here I assume that driving down S 17th, you are forced to turn right into E
San Fernando. Routing software will not evaluate staying on S 17th, because
it becomes an oncoming oneway.
http://www.openstreetmap.org/browse/relation/53021
So the only thing to prevent is a left turn into Arroyo Way. So change "to"
to Arroyo Way and add 65500440 as the via node. "restriction" can remain
equal to only_right_turn, or you can change it to no_left_turn.

I see you added many only_left_rights, but I didn't implement it because I
don't know what it was.
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