Under what circumstances are drivers allowed to pass other vehicles at zebra crossings?

Answer: D — Never

Passing other vehicles at zebra crossings is strictly prohibited at all times. Zebra crossings are specifically designed for pedestrian safety, allowing pedestrians to cross the road safely. When a vehicle passes another vehicle at a zebra crossing, it poses a significant risk to pedestrians who may be crossing or about to cross, as well as to the driver, who may not see oncoming traffic or pedestrians due to the obstruction. The only appropriate action for drivers when approaching a zebra crossing is to slow down, stop if necessary, and yield the right-of-way to pedestrians. This prioritization of safety underscores the importance of zebra crossings in promoting a pedestrian-friendly environment. The correct answer reflects the fundamental traffic rules governing pedestrian crossings, emphasizing that there are no conditions under which passing at a zebra crossing is acceptable.