Roundabouts are circular intersections where traffic flows around a center island.  Roundabouts are designed to promote safe and efficient traffic flow and use yield signs at entry to control traffic instead of traffic signals or stop signs.

Roundabouts more efficiently move traffic through intersections because yielding at an entry point takes less time than stopping and waiting for a green light.  Also, roundabouts more effectively handle intersections with a high volume of left turns in comparison to traffic signals.


Roundabout at the Jackson/Murdock intersection in Oshkosh.

Roundabouts are designed to accommodate larger vehicles, such as semi-trucks and emergency vehicles, through the use of a “truck apron” located between the roadway and the center island.  The apron is generally composed of a red colored concrete and is slightly raised to discourage cars from using it, while providing larger vehicles with the room they need.

Click the links below or visit the Wisconsin Department of Transportation’s website (click here to view) to find out why roundabouts are a safer and more efficient alternative to intersections.  Viewing these pdf documents will require Adobe Reader (click here to download).

Roundabout Materials

Roundabout Benefits Summary

Navigating a Roundabout

Roundabout Tri-fold