When is it permissible for students to stand while the bus is in motion?

It is never permissible for students to stand while the bus is in motion because this practice poses significant safety risks. The design of school buses prioritizes the safety of all passengers, and standing can lead to falls or injuries, especially during acceleration, deceleration, or turns, when the motion of the bus can change suddenly. Ensuring that all students are seated with their seat belts fastened (where available) is a fundamental safety requirement for school bus operation. This rule is in place to mitigate the risks of harm that could occur in an event of sudden stops or accidents. The emphasis on seated passengers helps maintain a safe environment for all students, making it crucial for bus operators and attendants to enforce this rule at all times.