Cargo
Cargo tests load securement, weight distribution, and inspection. The exam expects you to know that an unsecured or overloaded load can shift, roll over, or exceed axle limits.
Securement and weight
Use enough tiedowns and devices rated for the load. Secure cargo against forward, rearward, and sideways movement; use a headboard when required. Do not exceed gross vehicle weight, axle limits, or tire ratings. Distribute weight evenly and low. Cover loads that could blow off. Check securement before departure and during the trip, especially after the first few miles and on rough roads.
Worked example
A load sits mostly behind the rear axle. Reasoning: too much weight on the rear axle can overload tires and make steering light. Move the load forward within limits and recheck axle weights.
Traps
Counting tiedowns without checking ratings, ignoring axle limits, and failing to recheck after bumps are common errors. A load shift can happen without a warning.