What is the proper action when encountering school buses with flashing lights?

Answer: B — Stop if the lights are flashing

When encountering school buses with flashing lights, the appropriate action is to stop if the lights are flashing. This is a critical safety measure designed to protect children who may be getting on or off the bus. The flashing lights indicate that the bus is either loading or unloading passengers, and it is illegal to pass a school bus when these lights are activated. The purpose of this regulation is to ensure that children can safely cross the street in front of the bus without the risk of being struck by an oncoming vehicle. Stopping when the lights are flashing gives drivers the necessary time to react to any unexpected movements from children. Maintaining awareness of these signals and adhering to the law not only safeguards the safety of children but also keeps drivers legally compliant.