Which of the following is an acceptable location for fuel supply cylinders on mass transit vehicles?

The correct answer indicates that fuel supply cylinders on mass transit vehicles can be located in front of the rear bumper mounting face. This specific area is often chosen due to safety considerations and structural integrity. Positioning the cylinders here allows for effective weight distribution and minimizes the risk of damage during impact, as this area is designed to absorb force during collisions. Proper installation in this location also ensures that refueling and maintenance procedures remain convenient for vehicle operators.

In mass transit vehicles, safety regulations are critical in determining where fuel systems can be placed. Locations that are shielded or protected from damage are preferred to maintain the integrity of the fuel supply cylinders. The front position, relative to the rear bumper, usually complies with safety standards and guidelines that govern the placement of compressed natural gas (CNG) cylinders.

Other options may suggest places that do not meet clean safety standards or could hinder access for maintenance or refueling, which is why they are not considered acceptable. For instance, placing cylinders only below the driver’s seat may compromise passenger safety and comfort, while situating them in the cargo area could restrict cargo space and affect vehicle balance. Selecting an optimal location for fuel supply cylinders is crucial in ensuring both operational efficiency and safety in mass transit systems.