What does it indicate when amber lights are flashing at the top of a school bus?

When amber lights are flashing at the top of a school bus, it serves as a warning to drivers that the bus is preparing to make a stop to load or unload children. This is a critical safety measure intended to alert surrounding traffic to slow down and be vigilant, as children may be present and could be crossing the street. The activation of amber lights signals that the bus is not yet stopped but is about to position itself to do so.

This precaution helps ensure the safety of children boarding or disembarking from the bus, as they may be moving close to the roadway. It is crucial for drivers to recognize this indication and respond appropriately by reducing their speed and being cautious until the lights change and the situation is safe.