[Loadstone] definition of turning circle

Dave Mielke dave at mielke.cc
Thu Aug 24 14:21:09 PDT 2017


[quoted lines by Shawn Kirkpatrick on 2017/08/24 at 14:07 -0700]

>circles? I think those are where cars go around until they can turn
>on to the street they want. 

A turning circle is a widened round area at the end of a dead-end road that one 
can easily turn around within.

A round-about is a full circle ring road, i.e. there's a non-road center, 
that's used instead of a traffic light. All of the roads for the intersection 
enter/leave the outer edge of the ring road. You enter the round-about and then 
turn in the direction that's the same as the side of the roead you're on - so 
to the right in North America, to the left in the UK, etc - such that you 
aren't crossing any traffic within the round-about. You then continue around 
the round-about until you get to the road you want to be on, and turn onto it. 
If you're just going to the next road then you stay in the outer lane whereas 
if you're going further than the next road then you drive in one of the inner 
lanes. A round-about lets you drive through a busy intersection without 
stopping.

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