[OSM-newbies] Turning Circles at the end of cul-de-sacs ??

[James Ewen]

On Tue, Aug 24, 2010 at 4:34 AM, Dave F. <davefox at madasafish.com> wrote:

> Your example in Canada isn't even a turning circle. I'd map it as a looping
> way, because i like to do things accurately.

Well, the one I showed was more of a triangle. If you look around the
area though, you'll see that most cul-de-sac style roads have a
facility where a real vehicle would have a chance of turning around.

Some like this one on Cardinal Place are simply a bulbuous lump at the
end of the road:

http://maps.google.com/?ie=UTF8&hq=&hnear=Sherwood+Park,+Division+No.+11,+Alberta,+Canada&ll=53.521431,-113.292432&spn=0,0.038581&z=15&layer=c&cbll=53.521432,-113.292628&panoid=TIWHdCp6zNDU1J_1TOtUPw&cbp=12,87.43,,0,18.21

While others are much more like a circular way:

http://maps.google.com/?ie=UTF8&hq=&hnear=Sherwood+Park,+Division+No.+11,+Alberta,+Canada&layer=c&cbll=53.521347,-113.282388&panoid=0RHiGAj-QCXD0cAUB9276w&cbp=12,14.12,,0,2.1&ll=53.521501,-113.28239&spn=0,0.009645&z=17

So really trying to generalize that all cul-de-sac type roads have a
"turning circle" at the end is a fallacy. Especially when you use the
crazy British concept of a turning circle being some miniature parking
lot at the end of a narrow little lane where one might have the chance
of turning a bicycle around without having to dismount.

We're mapping the world where there are huge numbers of variations
abound, but we're trying to pigeon hole all of that into the British,
or European definitions. There are going to be issues.

James
VE6SRV