Traffic Circles vs Traffic Lights

As a follow up to last weekend's conversation about the merits of traffic circles vs traffic lights, here is a story on Hans Monderman, a Dutch traffic engineer. Monderman eliminated all traffic control (stop signs, lights, etc) in the mid-sized city of Drachten; to great success. Here's the crux:

At the town center, in a crowded ­four-­way intersection called the Lawei­plein, Monderman removed not only the traffic lights but virtually every other traffic control. Instead of a space cluttered with poles, lights, “traffic islands,” and restrictive arrows, Monderman installed a radical kind of roundabout (a “squareabout,” in his words, because it really seemed more a town square than a traditional roundabout), marked only by a raised circle of grass in the middle, several fountains, and some very discreet indicators of the direction of traffic, which were required by ­law...

A year after the change, the results of this “extreme makeover” were striking: Not only had congestion decreased in the ­intersection—­buses spent less time waiting to get through, for ­example—­but there were half as many accidents, even though total car traffic was up by a third. Students from a local engineering college who studied the intersection reported that both drivers and, unusually, cyclists were using ­signals—­of the electronic or hand ­variety—­more often. They also found, in surveys, that residents, despite the measurable increase in safety, perceived the place to be more dangerous. This was music to Monderman’s ears. If they had not felt less secure, he said, he “would have changed it immediately.”