What action should be taken when approaching a roundabout?

When approaching a roundabout, yielding to vehicles already in the roundabout is essential for maintaining safety and ensuring smooth traffic flow. This rule is designed to allow vehicles already circulating in the roundabout the right of way, preventing potential collisions and ensuring that traffic moves efficiently.

Entering the roundabout without stopping is generally not a safe practice, especially if there are vehicles already occupying the roundabout. Turning left is not appropriate for all scenarios, as the desired direction of travel will vary depending on the destination. Using the horn is discouraged unless it is to alert another driver of a specific, imminent hazard, and is not a standard requirement in this situation. Yielding allows drivers to assess the traffic conditions inside the roundabout and enter safely when the way is clear.