When is it necessary to completely stop in a roundabout?

In a roundabout, you are required to completely stop when approaching an emergency vehicle that is responding to an incident. This is crucial for maintaining safety, as emergency vehicles need to navigate through traffic quickly to reach their destination. By stopping, you ensure that the emergency vehicle has a clear path to proceed, which is vital in urgent situations.

While yielding to pedestrians is important, particularly when they are crossing at designated points in or near the roundabout, stopping is not always necessary unless pedestrians are present and crossing your path. When entering a roundabout, you typically yield to traffic already circulating within it rather than coming to a full stop, unless there is a specific condition that warrants it. The presence of a stop sign would also indicate that a full stop is required, but this situation generally does not apply to roundabouts as they are designed to keep traffic flowing continuously without the need for stop signs.