ROUNDABOUTSA roundabout is a one-way circular intersection in which traffic moves counterclockwise around a center island. Roundabouts do not have traffic signals or stop signs, which allows for continuous traffic flow and increased vehicle capacity.
Vehicles entering a roundabout slow down and yield to the vehicles already within the roundabout.
Roundabouts can have one or more lanes, depending on space and the traffic volume needs.
They are designed to accommodate vehicles of all sizes—from small cars to tractor trailers, school buses and boats. Paved concrete aprons within the roundabout allow for large trucks and other vehicles with a wider turn radius to drive over them. Motorists within multi-lane roundabouts should avoid traveling in lanes next to large vehicles to allow for wider turns.