Roundabouts are generally more efficient than traffic lights. Proponents argue that roundabouts can significantly reduce crashes, injuries, and fatalities, improve traffic flow, and save cities money on operational costs like electricity bills [2][4]. The Insurance Institute for Highway Safety states that they are safer for both drivers and pedestrians, causing much less congestion than traffic lights [2]. Additionally, modern roundabouts can move 50% more cars per hour than traditional traffic signals and reduce serious injury crashes by nearly 80% when replacing signalized intersections [5][6]. Moreover, they typically result in less daily delay for vehicles compared to traffic lights [3]. Overall, roundabouts enhance safety and traffic management more effectively than traffic lights.

what is more efficient a roundabout or a traffic light?

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