United States Department of Transportation
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Abstract:Roundabouts have been effective at increasing safety and efficiency of vehicle traffic. Traditional roundabout design typically requires a larger “footprint” than a traditional four-way intersection. Over the past few years, more and more agencies are implementing “mini roundabouts,” a type of roundabout characterized by a small diameter that can include fully traversable islands (central island and splitter islands). Currently, there are over 40 mini-roundabouts in Minnesota. The focus of this document was to help Minnesota agencies learn a little more about mini-roundabouts by addressing frequently asked questions.
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