When should the driver of a school bus operate the flashing red signal (cross-over) lamps?

The driver of a school bus should operate the flashing red signal (cross-over) lamps at all times when loading or unloading children in the 12th grade or below, unless specifically exempted by law. This requirement is in place to ensure the safety of young students as they enter or exit the bus. The activation of these signals warns approaching vehicles to stop, providing a secure environment for children who may be distracted or unaware of their surroundings while boarding or exiting the bus.

This practice reinforces the importance of vigilance around school buses, as children are especially vulnerable in these situations. The flashing lights serve as a critical indicator to drivers in the vicinity to slow down and take heed of the safety protocols in place. It is essential for drivers of all vehicles to recognize and respect these signals to prevent accidents and injuries.

While other options may mention different scenarios regarding the operation of the lights, they do not encompass the comprehensive requirement that the lights must be activated for every instance of loading or unloading, which underscores the priority of child safety in these contexts.