A roundabout is a type of circular intersection that, in the proper context, provides for safer, more efficient, and less expensive intersection operations. Roundabouts are a proven traffic calming countermeasure that help reduce the frequency of severe and fatal accidents when compared to conventional stop-controlled or signalized intersections. The key characteristics of a roundabout are:
- Counterclockwise flow around a center island
- Vehicles entering the roundabout yield to traffic already circulating in the roundabout
- Vehicles circulating in the roundabout travel at lower speeds (15 - 25 MPH)
The following resources provide additional information on the design of roundabouts, including how to navigate through, and the benefits of, modern roundabouts:
- Roundabouts and Mini Roundabouts (Federal Highway Administration)
- Modern Roundabouts - A Safer Choice (Video) (Federal Highway Administration)
- Roundabouts - A Safer Choice (Brochure) (Federal Highway Administration)
- Florida Roundabouts Information (FDOT)
- Roundabouts: an Informational Guide (NCHRP Report 672)
- How Roundabouts Work (Wisconsin DOT) (Wisconsin DOT)
- Roundabouts (Washington State DOT) (Washington State DOT)
If you have additional questions, please call the Transportation Division at (813) 274-3101.