Reader Jamie sent us a link to a great presentation that is part of the TED Talks series. South Fraser OnTrax has been following traffic safety from day one, and one thing that makes intersections safer are roundabouts. In fact, a signalized intersection (traffic light) is the most dangerous type of intersection. The following the presentation talks about the safety improvement from installing roundabouts including how they can drop fatal crashes by 90%. Roundabouts also save fuel which is good for the environment. The presenter goes one step further and talks about changing the way three-way intersections works. I suggestion that you check out this 4 minutes clip.