What should you do if you approach a roundabout?

When approaching a roundabout, the appropriate action is to yield to traffic already in the roundabout. This is crucial for maintaining the flow of traffic and ensuring safety for all road users. Roundabouts are designed to improve road safety and reduce congestion by allowing vehicles to flow in one direction around a central island.

By yielding, you allow vehicles that are already in the roundabout to pass before you enter, thus preventing potential collisions and promoting a smoother traffic pattern. This rule ensures that the roundabout operates efficiently, as vehicles can enter without having to wait for gaps in oncoming traffic, ultimately reducing delays.

The other approaches, such as accelerating to enter quickly or entering without stopping, can lead to dangerous situations, including collisions. Similarly, honking is not a necessary or safe action in this context, as it could confuse or alarm other drivers without improving your own situation. Hence, yielding is the key behavior when navigating roundabout intersections, ensuring safety and efficiency.