Here are reasons for engineering a rotary (I'm from Massachusetts too)properly and driver education:
This one is in Britain I believe
Also in Britain
This
8 lane nightmare is in Paris, L'Arc de Triomphe
BTW, In L'Arc de Triomphe, the people IN the rotary are suppossed to yeild to the people coming INTO the rotary, how backasswards is that! The other funny thing about the Arc, insurance companies in France, no matter who's fault an accident is in L'Arc de Triomphe, will not cover the damages at all for any reason, and the people involved have to split the damages bill 50/50! I personally would just avoid it...