[OSM-talk] Obvious turn restrictions

Nathan Edgars II neroute2 at gmail.com
Fri Jul 8 16:21:26 BST 2011


On 7/8/2011 10:05 AM, Nakor Osm wrote:
>
>
> On Fri, Jul 8, 2011 at 1:40 AM, Nathan Edgars II <neroute2 at gmail.com
> <mailto:neroute2 at gmail.com>> wrote:
>
>
>     So what's the point?
>     Any halfway-decent router will take the obvious route.
>     Even if a router doesn't do that, it should be clear to someone
>     following directions that to turn right they need to take the
>     island-separated right-turn lane(s).
>
>
> What about if the driver misses the first "obvious" turn? Then the
> router would recalculate and tell him to turn right where it is forbidden.
>
Then the driver doesn't turn right, and the router recalculates again.

Here's a better example of the problem: 
http://www.openstreetmap.org/browse/relation/1591319/history
North Elk Vale has been split into three ways with four relations on 
each side of the overpass. And for what? To prevent a router from 
telling you to turn right in the wrong part of the intersection? Is a 
GPS even accurate to 100 feet?



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