What must drivers do when approaching a roundabout?

When approaching a roundabout, drivers are required to slow down and yield to traffic that is already circulating within the roundabout. This practice ensures safety and allows for a smooth flow of traffic, as vehicles already in the roundabout have the right of way. Yielding at roundabouts is crucial because it helps prevent collisions and reduces congestion, as vehicles can enter the traffic circle when there is a safe gap. This rule is a fundamental part of roundabout design and function, promoting efficiency in handling intersections compared to traditional stop signs or traffic lights.

Speeding through a roundabout can lead to dangerous situations, as it may cause a driver to collide with others already navigating that space. Stopping completely is unnecessary as long as it is safe to enter; it could lead to traffic backup and frustration. Making a U-turn can further complicate the situation and is not a recommended action when confused at a roundabout; instead, drivers should proceed with caution and yield accordingly.