What is the rule for school buses' stopping on undivided highways?

• A. Only traffic behind the bus must stop.
• B. On undivided highways, all traffic must stop.
• C. Traffic in the opposite direction must always stop on divided highways.
• D. No vehicles are required to stop on divided highways.

Answer: (B)

On an undivided highway, when a school bus stops with its red lights flashing and the stop arm extended, all traffic in both directions must stop. This ensures children can board or alight safely since there’s no barrier separating traffic coming from the opposite direction. You should remain stopped at a safe distance (about 20 feet in Michigan) until the bus resumes movement and the signals are turned off. The other statements don’t fit undivided roads: they imply stopping only some traffic or apply to divided highways, where the rules are different.