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

[Warin]

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.