[Talk-us] tagging cul-de-sacs

Martijn van Exel mvexel at gmail.com
Tue Apr 10 15:39:17 BST 2012

On 4/10/2012 8:32 AM, Ian Dees wrote:
> On Tue, Apr 10, 2012 at 9:27 AM, Henk Hoff <toffehoff at gmail.com
> <mailto:toffehoff at gmail.com>> wrote:
>     On Tue, Apr 10, 2012 at 4:17 PM, Martijn van Exel <mvexel at gmail.com
>     <mailto:mvexel at gmail.com>> wrote:
>         A roundabout (or mini_roundabout) implies to me (although it is
>         not defined on the wiki) that there is more than one entry /
>         exit road. So intuitively I'd say that is not an appropriate tag.
>     A mini roundabout is more like a big dot in the middle of the
>     junction, so that all rules of a roundabout are implied on that
>     junction. Example:
>     http://www.cbrd.co.uk/histories/roundabouts/img/mini.jpg
>     Whereas a "normal" roundabout is a more or less circular piece of road.
>     Example:
>     http://adamcopeland.files.wordpress.com/2008/09/roundabout-live-local.jpg
>     .... generally speaking ....
>     For a cul-de-sac I normally use the highway=turning_circle tag on
>     the last node.
> There are two kinds of cul-de-sacs.
> This is the sort where I tag the last node of the way with
> highway=turning_circle: http://binged.it/IwzjHv
> This is the sort that I loop the road way back on itself:
> http://binged.it/Imk84z

Good point, the distinction being the island in the middle. I would 
argue that even these may be tagged as a turning_circle though, as a 
roundabout implies, to me, that there is a through traffic function with 
more than one road connecting to it.

Martijn van Exel

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