What is the purpose of a roundabout in traffic?

The primary purpose of a roundabout is to improve safety and traffic flow. Roundabouts are designed to keep traffic moving smoothly by allowing vehicles to enter and exit without stopping at traffic signals or stop signs. This movement minimizes the potential for collisions, as vehicles are all moving in the same direction and often at lower speeds compared to traditional intersections. Furthermore, because drivers yield to traffic already in the roundabout, it reduces the likelihood of high-speed accidents that are common at intersections with traffic lights or stop signs.

In addition, roundabouts can significantly decrease congestion, as they facilitate continuous traffic movement. When designed properly, roundabouts can handle higher volumes of traffic without the delays often experienced at stop-controlled intersections. This combination of enhanced safety and improved traffic flow illustrates why roundabouts are increasingly used in modern road design.