A roundabout, a rotary and a traffic circle are types of circular road in which traffic is permitted to flow in one direction around a central island. In the United States, engineers use the term modern roundabout to refer to junctions installed after 1960 that incorporate design rules to increase safety.
A roundabout, a rotary and a traffic circle are types of circular road in which traffic is permitted to flow in one direction around a central island. In the United States, engineers use the term modern roundabout to refer to junctions installed after 1960 that incorporate design rules to increase safety.
Source: Wikipedia "Roundabout" · CC BY-SA 4.0
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