[CFrance]

Originally Posted by tomwed

What about having only 1 lane? It's called a Modern Roundabout

What is a Modern Roundabout?



Simply stated, a modern roundabout is a transportation management tool that moves traffic through an intersection without the aid of traffic signals. More specifically, a modern roundabout is an intersection with one-way circulation around a central island where entering traffic must yield the right-of-way to the traffic circulating within the roundabout.

A modern roundabout should not be confused with traffic rotaries or circles, which are much larger, with higher speeds and multiple lanes for entering and exiting. As traffic volumes increase, collisions and traffic jams can occur because vehicles are not required to yield to traffic before entering.

Traffic engineers recognized the deficiencies associated with traffic rotaries and circles, and incorporated slower speeds and "yield on entry" into modern roundabouts. for more click here

Perfect.