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

[Diego Woitasen]

I'm reading the law again and it's a little confusing. It says "you
can't turn left on ways with traffic lights". I'm discussing about
this in the Argentinian OSM forum.



On Wed, Dec 29, 2010 at 7:00 PM, Nic Roets <nroets at gmail.com> wrote:
> Hello Diego,
>
> Are left turns prohibited for the majority of junctions where two
> residential roads cross each other ? Are left turns prohibited even at the
> majority of residential T junctions ?
>
> I know it may look like a lot of work adding all the no_left_turns, but it's
> the right way.
>
> Having different defaults for each country leads to many problems:
> 1. At a T junction, something that looks a left turn to some may look like a
> straight on to others.
> 2. Writing the code is non trivial and it affects routing engines, relation
> editors, validators and even some renderers.
> 3. Tourists who map in Argentina may not do the right thing.
>
> Regards,
> Nic
>
> On Wed, Dec 29, 2010 at 6:19 PM, Diego Woitasen <diego at woitasen.com.ar>
> wrote:
>>
>> Hi,
>>  In Argentina we have a general rule. If you are driving in a two way
>> highway (residential, primary, secondary, etc) you can't turn left.
>> You can do it only if there is a sign and/or traffic light with the
>> turn left row. We are discussing in the Argentina forum about if it's
>> make sense to map the no_turn_left restriction on every crossing road
>> or not. I think that we should drive the exception to the rule, the
>> routing software should apply the default restriction.
>>
>> What are you doing in the other countries?
>>
>> Regards,
>>  Diego
>>
>> --
>> Diego Woitasen
>>
>> _______________________________________________
>> talk mailing list
>> talk at openstreetmap.org
>> http://lists.openstreetmap.org/listinfo/talk
>
>





-- 
Diego Woitasen