Final answer:
When red lights begin to flash, drivers are required to come to a complete stop and remain stationary until it is safe to proceed, ensuring the safety of all road users.
Step-by-step explanation:
When red lights begin to flash, drivers should stop. This means that the vehicle must stop moving and become stationary until it is safe to proceed. Flashing red lights often indicate a stop sign at an intersection or a school bus picking up or dropping off children, and it's essential to remain stopped until the red lights stop flashing and it is clear to continue driving. Stopping ensures the safety of pedestrians and other road users.