What should you do when approaching a roundabout?

Answer: B — Yield to traffic already in the roundabout

When approaching a roundabout, the correct action is to yield to traffic already in the roundabout. This is important because vehicles inside the roundabout have the right of way, allowing for smoother traffic flow and reducing the likelihood of collisions. By yielding, you ensure that you are safely integrating into the circular traffic, which is designed to keep moving without the need for traffic signals. In addition, merging without slowing down can lead to dangerous situations as you might encounter vehicles unexpectedly; signaling left and entering immediately disregards the right-of-way rules and can cause confusion and accidents; and stopping and waiting for a green light is not appropriate as roundabouts function differently than traditional intersections, where signals would be in place. Understanding the right-of-way rules at a roundabout is essential for safe driving and promotes efficient traffic movement.