Mythbusters tests which is more efficient, four-way stop or roundabout [w/poll]
In the US, the four-way-stop intersection is king, with little competition from roundabouts. In Europe, things are reversed, and the roundabout is much more common than four-way-stop intersections. While it has been said before that the roundabout is a more efficient way to handle traffic at a busy intersection, Mythbusters aims to find out the truth.