Final answer:
If a school bus stops on a multi-lane road with a barrier, traffic behind or incoming traffic must stop only on the side of the bus to ensure student safety.
Step-by-step explanation:
If a school bus stops on a multi-lane road with an unpaved barrier or a raised barrier between both directions of traffic, traffic behind or incoming traffic must stop only on the side of the bus. This is to ensure the safety of the students getting on or off the bus. When the bus stops and displays its stop signals, it indicates that students are entering or exiting the bus, and other vehicles should come to a stop to prevent any accidents.