What must drivers do when they encounter a pedestrian in a marked crosswalk?

When drivers encounter a pedestrian in a marked crosswalk, the appropriate action is to yield and allow the pedestrian to cross. This rule exists to ensure pedestrian safety, giving them the right of way when they are using designated crossing areas. Crosswalks are specifically marked to indicate where pedestrians can safely traverse the road, and it is the responsibility of drivers to recognize these zones and react accordingly.

By yielding, drivers not only comply with traffic laws but also contribute to maintaining a safe environment for all road users, including vulnerable pedestrians. This practice fosters a culture of respect and safety on the roads, reducing the likelihood of accidents and ensuring that pedestrians feel secure while crossing.

The other options present actions that would contradict these safety principles or violate traffic regulations. For instance, speeding up to pass a pedestrian fails to prioritize safety and potentially endangers the life of the pedestrian. Ignoring a pedestrian, regardless of urgency, dismisses their rights and increases the risk of collisions. Lastly, stopping only when there is a traffic signal neglects the obligation to yield to pedestrians who are already in the crosswalk, as the law applies regardless of signal indication.