Final answer:
Drivers should stop and remain stationary when a bus stops on a road with more than four lanes, ensuring the safety of passengers, especially during the boarding and alighting process.
Step-by-step explanation:
When a bus stops on a road with more than four lanes, it is essential for drivers to follow local traffic laws, which typically require vehicles traveling in the same direction as the bus to stop and remain stationary until the bus starts moving again or the bus's stop sign and flashing lights are no longer in use.
This safety measure is in place to ensure the protection of passengers embarking and disembarking the bus, particularly children. It is important to note that requirements may vary depending on local laws and regulations, so it's always best to be aware of the specific rules in your area.