Tennessee Permit Practice Test

When a school bus has its red lights flashing, it signifies that it is either picking up or dropping off students. Vehicles stopped behind a school bus must remain stopped until the bus resumes motion. This is crucial for the safety of the children getting on or off the bus. It is important to wait until the bus starts moving again to ensure that all the children have safely crossed the road and are out of harm's way. Therefore, the correct answer is waiting for the bus to resume motion.