What action must be taken when entering a roundabout?

When entering a roundabout, it is essential to yield to traffic that is already circulating within it. This rule is in place to ensure smooth traffic flow and to prevent accidents. Vehicles already in the roundabout have the right of way, which allows them to maintain their speed and path without unnecessary interruptions.

Yielding also provides time for the driver entering the roundabout to assess the situation and find an appropriate gap in traffic to enter safely. This action helps maintain an orderly flow of vehicles, reducing the likelihood of collisions. Roundabouts are designed to minimize potential conflict points and improve road safety, and yielding when entering is a crucial aspect of their operation.

Other actions, such as accelerating to get ahead of other vehicles, would disrupt the flow and potentially cause accidents. Stopping unnecessarily can lead to confusion for other drivers, and driving in reverse is not a safe or appropriate maneuver in this scenario. Proper yielding behavior is what contributes to the overall efficiency and safety of the roundabout.