Final answer:
When on a two-lane road and encountering a stopped school bus, you must stop and remain stationary until it is safe to proceed, similar to obeying a traffic signal for safety.
Step-by-step explanation:
When driving on a two-lane roadway, the correct action to take when a school bus stops for passengers is to stop moving and become stationary until the bus has finished loading or unloading passengers and it is safe to proceed. This rule is similar to stopping at a red traffic light, where the primary concern is safety. The safety of school children is paramount, and traffic laws require that all drivers adhere to these rules to prevent accidents. It is also important to note that this action ensures the pedestrian safety of the students boarding or disembarking from the school bus.