What should motorists do if they see a school bus with flashing red lights?

When motorists encounter a school bus with flashing red lights, the appropriate action is to stop and remain stopped until the lights stop flashing. This is crucial for the safety of children who may be getting on or off the bus. The flashing red lights indicate that the bus is either loading or unloading students, and stopping ensures that children can safely cross the road without risk of being struck by a vehicle.

This law is designed to protect the most vulnerable road users—children—who may not be aware of the dangers associated with traffic. It is important for drivers to understand that they are required to stop regardless of the direction from which they are approaching the bus and even if there are no children in sight at that moment.

In contrast, the other options present actions that could potentially endanger children and violate traffic laws. Passing the bus quickly may not provide sufficient time to ensure that the area is clear of children. Similarly, slowing down and proceeding with caution may lead to misjudgment about children's safety. Honking the horn serves no purpose in this context and may distract or confuse the bus driver or the children. Thus, stopping when the lights are flashing is the only responsible choice to ensure everyone's safety.