When are drivers required to stop for a school bus?

Answer: B — When the bus has its red lights flashing and stop sign extended

Drivers are required to stop for a school bus when its red lights are flashing and the stop sign is extended. This rule is in place to ensure the safety of children as they board or exit the bus. The flashing red lights signal that the bus is either picking up or dropping off students, and stopping is crucial to prevent any accidents. When the stop sign is extended, it serves as a clear visual warning for all vehicles to come to a complete stop, regardless of the direction in which the vehicle is traveling. This allows children to cross the street safely without the risk of oncoming traffic. In contrast, the presence of yellow flashing lights indicates that the bus is preparing to stop, but it does not yet require other vehicles to stop. Therefore, only the activation of the red lights along with the extended stop sign mandates that traffic come to a halt. Understanding this rule is essential for all drivers to ensure the safety of children near school buses.