National Roundabouts Week begins on September 22 to raise awareness about their safety benefits.

Roundabouts reduce intersection crashes resulting in death or injury by an estimated 82 percent, according to the Federal Highway Administration.

While improving the flow of traffic, roundabouts also reduce conflict points and slow speeds to 15-25 mph, on average.

There are approximately 11,000 roundabouts in the U.S.

Roundabouts reduce traffic delays by 62-74 percent.

The traffic system also reduces costs, since traffic signals cost more and require installation, power, and maintenance.

The geometry of a roundabout is key to controlling the speed of vehicles entering and maneuvering through the intersection, providing the following benefits:

• Lower severity of collisions that may occur, resulting in significantly fewer severe injuries.
• Increased likelihood of drivers yielding to pedestrians at crosswalks.
• Time for drivers to judge and enter a comfortable gap in circulating traffic.