• A roundabout is a circular intersection where traffic goes one way in a counterclockwise direction and vehicles yield upon entry.

• A roundabout provides another option for a controlled intersection, that is, instead of stop signs or traffic signals.

• Roundabouts are widely used in the United Kingdom (since the 1960s, with over 10 000 roundabouts) and Australia (with over 15 000) roundabouts) and are gaining popularity in the United States and Canada with the US having over 2300 roundabouts in 40 different states and Canada having over 150.

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