In which situation must you yield to pedestrians according to traffic signals?

Answer: B — When a green arrow is displayed

The correct situation in which you must yield to pedestrians is when a red light appears. At a red light, vehicles must come to a complete stop, allowing pedestrians in crosswalks or waiting to cross the street to proceed safely. This rule ensures the safety of pedestrians and upholds the traffic laws that prioritize pedestrian right-of-way at intersections controlled by traffic signals. In contrast, a green arrow generally indicates that vehicles have the right-of-way to proceed in the direction the arrow is pointing, which would not require yielding to pedestrians unless specific pedestrian signals indicate otherwise. When making a U-turn, drivers must also be cautious and yield to pedestrians, but that scenario is secondary to the requirement of yielding at a red light. A stop sign requires drivers to come to a complete stop as well, but it does not inherently prioritize pedestrian crossing like a red traffic signal does. Therefore, yielding to pedestrians is fundamentally tied to the action of stopping at a red light.