How does a roundabout work?
Why we use roundabouts
In short, roundabouts are being used because they work well. A roundabout used at the right location will let you get through the intersection more safely and in less time. Watch "How About a Roundabout?" The Insurance Institute for Highway Safety has a video featuring the safety of roundabouts.
Roundabouts show a 89 percent decrease in fatal crashes, a 74 percent decrease in life-altering injury crashes and a 39 percent decrease in all crashes.
Better traffic flow
Roundabouts handle high levels of traffic with less delay than most stop signs or signals. The entry curves slow traffic so entering and exiting are easier and more efficient.
Better fuel efficiency and air quality
Where roundabouts replace signals, idling decreases which reduces vehicle emissions and fuel consumption by 30 percent or more.