re rotaries.

And for the experience of a lifetime try the Magic Roundabouts in UK.
http://www.swindonweb.com/life/lifemagi0.htm. Named after the children's TV show by the locals, the Swindon one featured in the picture above was officially renamed to its nickname by the local council. In this system you have several small roundabouts (Uk term = traffic circle) linked round a larger central one where the cars are going the WRONG WAY! I have driven through the Swindon one twice and it is logical but most unnerving, and I am used to driving on the wrong side of the road in Europe.

Rod