Cargo and Passenger Securement, Loading, and Weight Distribution
Cargo and Passenger Securement, Loading, and Weight Distribution
This domain tests two things people assume are simple: that the aisle is not a storage area, and that a wheelchair is properly tied down. Both assumptions cause injuries.
Passenger securement
- Every rider occupies a seat; no standees and no riders beyond the seat count.
- Students board single file using the handrail and go directly to a seat.
- Backpacks, instruments, and projects go under the seat or on the lap, never in the aisle.
- A wheelchair is secured with a four-point tie-down to the floor and the occupant gets a separate lap and shoulder belt. The wheelchair brake is set and the lift is never left unattended with a student on it.
- Preschool and special-needs students ride in an age- and weight-appropriate child safety restraint system, correctly routed and snug.
Loading
The lift is operated only by a trained driver or aide, with the bus stopped, parking brake set, and the area around the lift clear. Load ambulatory students first, then wheelchair users, and unload in the reverse order so no one waits alone at the curb.
Weight distribution
Heavy items go low and centered, inside a luggage compartment where one exists. Weight on the rear axle lightens the front axle and degrades steering, and a top-heavy load raises the already high center of gravity. Never exceed the gross vehicle weight rating or an axle rating.
Worked example
A field trip loads four coolers and a folding table. The aisle is the tempting spot. The correct answer is the luggage compartment; without one, the items go behind the last seat, low, and below seat-back height so they cannot become projectiles in a panic stop and the aisle stays clear for evacuation.
Traps
Using the aisle for gear; assuming a wheelchair lap belt is enough; forgetting the occupant restraint separate from the tie-down; stacking weight high and to one side.