Can a school bus be fuelled while its engine is running or with any passenger inside it?

Refueling a school bus while its engine is running or with passengers aboard poses significant safety risks, which is why regulations dictate that all passengers must disembark and the engine turned off before refueling. This procedure minimizes the potential for fuel vapors to ignite, reduces the risk of accidents or spills, and ensures that the bus driver can maintain full focus on the refueling process without the distractions and potential hazards posed by having passengers onboard.

Safety protocols are especially critical in environments where children are involved, as ensuring their well-being is of paramount importance. Furthermore, some jurisdictions could enforce additional regulations that explicitly require compliance with this practice to enhance safety standards.

In contrast, the other options suggest scenarios where fueling the bus might be permissible under certain conditions, such as having passengers onboard or the engine running, which contradicts the established safety norms and best practices in the industry. Adhering to the rule that mandates the engine be off and all passengers evacuated is essential for ensuring both safety and compliance with regulations.