What must you do when approaching a roundabout?

Answer: B — Yield to traffic already in the roundabout

When approaching a roundabout, it is essential to yield to traffic that is already in the roundabout. This ensures a smooth flow of traffic and reduces the risk of collisions. Vehicles inside the roundabout have the right of way, so by yielding, you allow those vehicles to continue moving without interruption. This is a critical rule designed to keep the traffic moving efficiently and safely. In addition to yielding, it’s important to approach the roundabout at a moderate speed and be prepared to enter when there is a safe gap in traffic. Stopping completely before entering the roundabout is not required unless necessary for safety, and speeding up to enter quickly can be dangerous and counterproductive. Signaling for a left turn is not appropriate when first entering; drivers should only signal when exiting. Understanding these dynamics is vital for navigating roundabouts correctly and safely.