When is it permissible to pass a school bus on an undivided roadway?

Passing a school bus on an undivided roadway is a serious matter, primarily concerned with the safety of children. It is never permissible to pass a school bus when the red lights are flashing, as this indicates that children are either boarding or disembarking from the bus. The law is designed to protect these vulnerable individuals by ensuring that drivers stop whenever the school bus is stopped and its red lights are activated. This rule is crucial for preventing accidents and ensuring the safety of students.

The other choices revolve around specific circumstances under which passing might seem feasible, but such scenarios do not align with the law designed to ensure maximum safety. By strictly enforcing the rules regarding school bus operations, communities can significantly reduce the risk of tragic accidents involving children.