Final answer:
You must stop and remain stationary when a school bus in front of you shows flashing red lights to ensure the safety of boarding or departing students. It is a legal requirement in many regions to stop for a school bus with flashing red lights, to prevent accidents and protect children.
Step-by-step explanation:
When a school bus has stopped on the road ahead of you and is showing flashing red lights, you must stop moving and become stationary until the bus turns off its lights and begins moving again. These red lights indicate that the bus is either picking up or dropping off students, and stopping is required to ensure their safety as they enter or exit the bus. It is a legal requirement in many regions to stop for a school bus with flashing red lights, to prevent accidents and protect children.