Cargo
Cargo is the tenth domain of the Louisiana CDL General Knowledge exam. It tests whether you can secure a load, distribute weight legally, and recognize how cargo changes braking, steering, and clearance.
Securement
Cargo must be tied down so it cannot shift, slide, or fall. Use tie-downs with an adequate working load limit, attach them to the vehicle's securement points, and use enough of them for the load's length and weight. Cover loads that could spill or blow off. Check securement within the first 50 miles and every 150 miles or 3 hours thereafter.
Weight and balance
Know the gross vehicle weight rating and axle limits. Distribute weight so no axle is overloaded, and keep the center of gravity low and centered. A heavy load placed too far back can unload the steer axle and make steering light; too far forward can overload the steer axle.
Cargo effects
Cargo changes stopping distance, cornering, and overhead clearance. It must not obscure lights, reflectors, or license plates. A shifting load can turn a routine stop into a rollover.
Worked example
After 50 miles, a driver checks the load and finds a strap has loosened and the load has shifted rearward. The driver stops in a safe place, redistributes the load, and retightens the straps before continuing. The reasoning: the 50-mile check exists because loads settle; a rearward shift can unload the steer axle and reduce control.
Traps
Overloading one axle while staying under gross weight, using damaged or undersized straps, and skipping the 50-mile check are common errors.