Which of the following is the safest speed to drive in a school zone when children are present?

The safest speed to drive in a school zone when children are present is 25 mph. This speed limit is typically established to enhance safety in areas where children are likely to be present and where unexpected pedestrian activity can occur. In school zones, children may be crossing the street, getting on or off buses, or playing nearby, making it crucial for drivers to reduce their speed to ensure they have enough time to react to any sudden movements. Driving at 25 mph allows for adequate stopping distance and increases the driver's ability to see and respond to children safely.

Lower speeds, such as 15 mph, while ideal in extremely high-density pedestrian situations, are often not practical in all school zones and may not be uniformly enforced. Higher speeds like 35 mph and 45 mph are generally considered unsafe in these areas, as they significantly increase the risk of serious injury or fatality in the event of an accident involving a pedestrian. Therefore, 25 mph strikes a balance between safety and practicality for drivers navigating school zones during times when children may be present.