What should a driver do when approaching a roundabout?

When approaching a roundabout, the correct action for a driver is to yield to the traffic already present in the roundabout. This ensures that vehicles inside the roundabout have the right of way, allowing for smooth and safe navigation. By yielding, you help prevent collisions and ensure that the flow of traffic remains uninterrupted.

Entering a roundabout without yielding can lead to dangerous situations as it may force drivers already circulating inside the roundabout to brake or swerve to avoid a collision. Signaling left to enter is not standard practice, as drivers typically signal their intent to exit the roundabout rather than when entering. Making a U-turn is also not a suitable action when approaching a roundabout, as it does not align with the intended function of roundabouts, which is to facilitate continuous flow of traffic in a circular manner.