Final answer:
Drivers must yield to traffic already in the roundabout to maintain the flow of traffic and ensure safety, and should not speed through or stop in the roundabout.
Step-by-step explanation:
This rule is paramount for sustaining the smooth flow of traffic and upholding safety standards in roundabouts. When entering a roundabout, drivers must exercise patience, waiting for an appropriate gap in the circulating traffic before merging seamlessly. Stopping within the roundabout or yielding unnecessarily to entering traffic can disrupt the flow and heighten the risk of accidents. Adherence to posted speed limits is crucial; drivers should avoid excessive speed when navigating the roundabout, ensuring safety not only for themselves but also for pedestrians and other road users. By following these guidelines, drivers contribute to an efficient and secure traffic environment, promoting the intended benefits of roundabouts in enhancing traffic flow and minimizing the potential for collisions.