[Tagging] dispute about center island in a turning circle

Nathan Edgars II neroute2 at gmail.com
Tue Mar 13 11:57:47 GMT 2012

On 3/13/2012 7:45 AM, Jonathan Bennett wrote:
> On 13/03/2012 11:29, Nathan Edgars II wrote:
>> http://wiki.openstreetmap.org/wiki/Talk:Tag:highway%3Dturning_circle#Central_island
>> The question is whether a normal-sized turning circle can be tagged as
>> such if there's a small landscaped island in the middle. Here's a local
>> example:
>> http://maps.google.com/maps?hl=en&ll=28.450005,-81.506599&spn=0.008433,0.016512&gl=us&t=m&z=17&layer=c&cbll=28.450005,-81.506599&panoid=XSUkL2QthSC5VFHjx0U2Rg&cbp=12,1.34,,0,8.36
> That is a perfect example of something that isn't a turning circle. The
> tree in a bed prevents you using the full width of the circle to turn
> in. Were you to map that as highway=turning_circle width=10m (say), a
> 7.5m truck, which would be able to turn in a 10m unobstructed turning
> circle (eventually), would get stuck trying to make it around that loop.

The same is true for overhanging branches and such. You can't rely on 
tags to know if an oversize vehicle can turn around.

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