Studies
Studies have shown that roundabouts are safer than traditional stop sign or signal-controlled intersections.
Roundabouts reduced crashes by 75 percent at intersections where stop signs or signals were previously used for traffic control, according to a study by the Insurance Institute for Highway Safety (IIHS). Studies by the IIHS and Federal Highway Administration (FHWA) have shown that roundabouts typically achieve:
- A 37 percent reduction in overall collisions
- A 75 percent reduction in injury collisions
- A 90 percent reduction in fatality collisions
- A 40 percent reduction in pedestrian collisions