What is the function of a roundabout?

The function of a roundabout is to facilitate the flow of traffic without the use of traffic signals. Roundabouts are designed to improve traffic efficiency by reducing the number of stops that vehicles experience, which helps to minimize congestion. Cars entering the roundabout yield to those already circulating within it, creating a continuous movement. This design also decreases the likelihood of serious accidents compared to traditional intersections with traffic lights, as vehicles are moving in the same direction and interactions occur at lower speeds.

While some might think that roundabouts could serve to increase traffic speed, their primary goal is not to enable fast travel but to maintain a smooth and safe flow of vehicles. Roundabouts do not serve as parking areas, as their purpose is to keep traffic moving rather than providing space for parked vehicles. Although pedestrian crossings may be present, they are not the primary function of a roundabout, which focuses more on vehicle movement than pedestrian access.