What is the purpose of a traffic circle?

The purpose of a traffic circle is to ensure smooth traffic flow. Traffic circles, also known as roundabouts, are designed to facilitate continuous movement of vehicles, allowing them to merge into the circle rather than come to a complete stop. This design reduces the likelihood of delays and keeps traffic moving efficiently, even as vehicles enter and exit at various points.

By encouraging a circular flow, traffic circles help manage congestion in areas where multiple roads converge. Their design can also enhance safety by lowering the frequency and severity of collisions, as vehicles are moving at lower speeds compared to traditional intersections.

While reducing traffic speed is a benefit of traffic circles due to their design, the primary goal is to maintain a steady flow of traffic. Eliminating traffic altogether is not feasible with any traffic control method, and accommodating larger vehicles is just one aspect of their design, not their main purpose.