What is the purpose of a roundabout?

The purpose of a roundabout is primarily to improve traffic flow and safety. Roundabouts are designed to reduce the speed of vehicles as they navigate through the intersection, allowing for a continuous movement of traffic while minimizing the potential for collisions, especially at high-speed intersections. By requiring vehicles to yield to traffic already in the roundabout, roundabouts help prevent accidents that might occur at traditional intersections, where stop signs or traffic signals might create abrupt stops or lane changes.

Additionally, roundabouts facilitate better traffic management, as they can handle higher volumes of traffic more efficiently than traditional intersections. The circular design reduces the need for motorists to make left turns across oncoming traffic, which is a common point of conflict and accidents at conventional intersections. The result is an enhancement in overall safety for both vehicles and pedestrians, as they tend to see fewer serious injuries in roundabout scenarios.

The other options presented do not adequately capture the primary function of a roundabout. While parking facilities are important for managing vehicular space, they are not relevant to the design or purpose of a roundabout. Designating a pedestrian zone tends to involve different traffic management strategies focused on pedestrian safety away from vehicles. Lastly, allowing for faster vehicle speeds is contrary to the intent of a roundabout, as