What action should you take when approaching a roundabout?

When approaching a roundabout, the appropriate action is to yield to traffic that is already in the roundabout. This means looking to your left and ensuring that you allow vehicles already circulating within the roundabout to pass before entering. This yielding rule is essential for maintaining a smooth and safe flow of traffic, reducing potential collisions and ensuring all vehicles can navigate the roundabout effectively.

Yielding helps in understanding the right-of-way dynamics that are critical in roundabouts. Traffic within the roundabout has the priority, which allows for a continuous flow of vehicles and minimizes the likelihood of congestion or accidents. Thus, following this rule contributes to overall traffic safety and efficiency.