[talk-au] Splitting Ways for small roundabout traffic islands

[Dian Ågesson]

Thanks Warin,

I maybe should have explained myself a bit better; I was actually 
referring to the ways leading into the roundabout, rather than the 
roundabout itself. :)

On 2021-11-15 20:38, Warin wrote:

> On 15/11/21 6:18 pm, Dian Ågesson wrote:
> 
>> Hello,
>> 
>> Quick question, as I'm not sure that there is an established consensus 
>> in Australia for this.
>> 
>> Where a way leading to a roundabout has a small traffic island, what 
>> is the preferred way to map? I have seen both the "traffic island as a 
>> node" approach (because they aren't really separate carriageways) and 
>> the "splitting ways" approach (because physical separation and more 
>> "detailed).
>> 
>> Specific examples: https://www.openstreetmap.org/way/121203404/history 
>> <https://www.openstreetmap.org/way/121203404/history> or 
>> https://www.openstreetmap.org/way/603989993 
>> <https://www.openstreetmap.org/way/603989993>
>> 
>> Is there a preferred approach, or does it not really matter? If 
>> splitting ways, are u-turns restrictions required?
> 
> Roundabouts are one way. So do ing a U turn by going the wrong way in 
> the roundabout would be against the law. I'd think all roundabouts 
> would be one way.
> 
> I have yet to see a 'no U turn' on them and they do make a good safer 
> place to do a u turn if you do the correct thing.
> 
> There are very small roundabouts that have a specific tag ... basically 
> these are a white painted circle on the road - they as so small that 
> trucks and buses need to go over the centre ... those I'd only do as a 
> node.
> 
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