[Tagging] Turn Restriction usage

Simone Saviolo simone.saviolo at gmail.com
Wed Apr 11 13:25:05 BST 2012


2012/4/11 Ross Scanlon <info at 4x4falcon.com>:
>> In one case there is a road where a two way section comes to a divider
>> and becomes two one way sections for a while. The suggested route came
>> along one of the one way sections, then turned about 340 degrees to go
>> down the other side of the road. It may be legal to do a u-turn there,
>> but I don't think it's safe, or even possible for most cars. I was
>> thinking about it, and many other divided road are similar where they
>> split/join. Should we be putting no u-turn restrictions on these?
>> There's no actual signs.
>
> No.  The router should know not to do this. Likewise as below the router
> should not make u turns at traffic lights.

Based on what? How does the router know that the two ways are two
carriageways of a single road? Couldn't they be a straight road, that
becomes a oneway street at a certain point, and at that point a
junction brings to a oneway secondary road?

Regards,

Simone



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