Under what conditions must you stop for a school bus?

The requirement to stop for a school bus occurs when the stop sign is extended and the lights are flashing. This situation indicates that children may be boarding or disembarking from the bus, which significantly increases the risk of potential accidents. The purpose of these laws is to protect vulnerable students and ensure their safety while they are getting on and off the bus.

Drivers must be aware that the flashing lights serve as a visual alert system. When activated, it signals all vehicles approaching from either direction (when there is no physical barrier like a median) to come to a complete stop, regardless of whether there are children visibly present. It's important to adhere to this law consistently to promote the safety of children and uphold traffic regulations.

The other options do not fully align with the legal requirements or safety measures in place for stopping for a school bus.