Under what conditions must a school bus driver never overdrive their headlights?

A school bus driver must never overdrive their headlights, particularly in adverse weather conditions or at night, because visibility is significantly reduced in these situations. Overdriving headlights means driving at a speed that is faster than what the driver can see ahead clearly. This can lead to dangerous situations where the driver cannot react in time to obstacles, pedestrians, or changes in traffic conditions.

During nighttime and in adverse weather, such as rain, fog, or snow, the effectiveness of headlights is compromised, making it crucial for a driver to maintain a speed that allows for safe stopping distances within the illuminated area of the headlights. This ensures the driver has ample time to see and react to any unexpected hazards, thereby enhancing safety for both the occupants of the bus and other road users.