Subject: Re: Roundabouts and traffic circles
Hi Andrew,

I think you'll enjoy reading this article on the subject: http://www.aiq.co.il/pages/articles/48/squares.html

The diagrams in this one are good: http://tinyurl.com/vm08

This provides the links for an exhaustive study: http://www.ksu.edu/roundabouts/ada/Learnmore.htm

Please get back to us with your findings! :-)

Cheers! Linda