The Roundabout traffic sign indicates that there is a roundabout ahead. Drivers approaching a roundabout must yield to traffic already circulating within it. This means that when you arrive at the roundabout, you should give way to vehicles coming from your left unless otherwise indicated by additional signs or road markings.

When entering the roundabout, look for gaps in the traffic and enter when it is safe to do so. Once in the roundabout, you have the right of way over vehicles entering it. Remember to signal your exit appropriately when you are leaving the roundabout.

Overall, roundabouts are designed to improve traffic flow and reduce the likelihood of collisions at intersections. It's important to approach with caution, watch for pedestrians, and maintain a safe speed within the roundabout.