What is the function of a roundabout in traffic management?

A roundabout serves as a critical tool in traffic management by facilitating the smooth flow of vehicles without the need for traffic lights. The design of a roundabout encourages continuous movement, allowing vehicles to merge and yield rather than stop completely, which helps reduce congestion at intersections.

These circular intersections are engineered to minimize potential conflict points between vehicles, decreasing the likelihood of accidents compared to traditional intersections that may have multiple stop signs or traffic lights. As vehicles approach the roundabout, they must yield to traffic already circulating within it, which promotes a steady and efficient flow. Moreover, the geometry of a roundabout naturally slows down vehicles due to its curvature and entry angles, contributing to safety while still maintaining traffic momentum.

While elements like speed reduction and the management of pedestrian crossings are relevant within the context of roundabouts, they do not encompass the primary function of these structures, which is to manage traffic flow efficiently without the reliance on traffic signals.