What must vehicles approaching a roundabout do?

Vehicles approaching a roundabout must yield to the traffic already in the circle. This is crucial for maintaining a smooth flow of traffic and enhancing safety for all road users. When vehicles yield, they allow those already in the roundabout to proceed without obstruction, which helps prevent collisions and minimizes delays.

The design of roundabouts promotes continuous movement, so yielding to traffic within the circle is essential. This rule is based on the traffic flow principles that prioritize vehicles already in the roundabout to ensure that the intersection functions as efficiently as possible.

In addition, entering vehicles are required to assess the traffic conditions and find an appropriate gap to merge into, which further emphasizes the importance of yielding. This practice not only facilitates safe entry into the roundabout but also contributes to overall traffic management on the road.