Where must motor fuel containers be installed on a school bus or mass transit vehicle?

Motor fuel containers must be installed on the underside of the vehicle to ensure safety and compliance with regulations. This placement minimizes the risk of exposure to passengers and the driver, protecting them from potential hazards in case of a leak or rupture. By situating fuel containers below the vehicle, they are less likely to be subjected to impact in the event of an accident, which significantly enhances the overall safety of the bus or mass transit vehicle.

This design also allows for better weight distribution and can help maintain the center of gravity of the vehicle, contributing to stability while driving. Additionally, installing the fuel container on the underside facilitates easier maintenance and access for refueling without compromising interior space or passenger safety.

The other options do not align with safety and regulatory standards; for instance, placing containers in the passenger compartment would expose individuals to hazardous fumes and increase the risk in case of a fuel leak. Installing them on the rear or the roof presents equally significant safety concerns, such as increased vulnerability in collisions or potential hazards from rollover situations. Thus, the placement on the underside stands out as the most secure and compliant choice.