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What is a Roundabout?

Modern roundabouts provide greater safety and traffic flow. Learn why and where MDOT is building them.

A roundabout is a type of circular intersection that has been used in Europe for several decades. In recent years, MDOT has constructed several roundabouts on state trunklines and more are planned.

  • They keep traffic moving; this decreases emissions and improves fuel economy.
  • Increase safety because there is no stopping in a roundabout, no left turns across opposing traffic lanes, and all vehicles must maintain similar speeds.
  • Lane design and pavement markings guide drivers through the intersection.
  • They force vehicles to slow to a safe speed for the intersection.
  • Can be landscaped to offer an attractive gateway into a city or other area.
 
 

More roundabout information


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