When vehicles approach a roundabout, they should?

When vehicles approach a roundabout, yielding to traffic already in the roundabout is essential for maintaining safety and efficient flow. Roundabouts are designed to allow continuous movement, and vehicles already in the roundabout have the right of way. This means that when you approach, you must look for any oncoming traffic and yield to it, ensuring that it can continue moving unhindered.

This practice is crucial for preventing collisions and promoting orderly traffic flow within the roundabout. Drivers entering the roundabout must also be aware of pedestrians and cyclists who may be traversing the area around the roundabout. Yielding not only helps in the smooth operation of traffic but also emphasizes the importance of courtesy and caution on the roads. By following this rule, drivers contribute to the overall safety and efficiency of the roundabout system.

The other options do not align with the established traffic rules regarding roundabouts, as they either suggest improper actions or disregard the right-of-way principle fundamental to roundabout use.