When entering a traffic circle or rotary, what should drivers do?

When entering a traffic circle or rotary, it is critical for drivers to yield to vehicles that are already circulating within the circle. This is essential for maintaining the flow of traffic and preventing collisions. Vehicles already in the circle have the right of way, and yielding ensures that they can proceed without interruption, which contributes to overall safety and efficiency in traffic patterns.

The principle behind yielding is that it allows for a smooth transition into the traffic flow of the circle rather than forcing vehicles already navigating the circle to stop or brake suddenly. This helps to maintain momentum and minimizes the risk of accidents, as sudden stops or rapid accelerations can lead to confusion and dangerous situations.

In the context of the other responses, quickly accelerating to enter the circle could create hazards for both the entering vehicle and those already in the circle. Signaling intentions is crucial when leaving the circle, but the priority must first be yielding to oncoming traffic. Stopping before entering could lead to unnecessary delays and frustration for drivers behind, as it disrupts the movement of traffic and could lead to rear-end collisions. Thus, yielding to vehicles already in the circle is the proper approach to ensuring safe and efficient traffic management within rotaries and traffic circles.