Transporting Cargo Safely
The Core Idea
Cargo questions test whether you understand weight limits, securement, and the effect of load placement on handling. An improperly loaded or secured load can shift, cause a rollover, or fail an inspection.
Concepts You Must Know
- Gross vehicle weight rating (GVWR) and axle weight limits: you must not exceed the rating of any axle, tire, or the vehicle itself. Know that overloading an axle is a violation even if total weight is legal.
- Securement standards: cargo must be tied down so it cannot shift. The general rule is at least one tiedown for every 10 feet of cargo length, with a minimum of two tiedowns for any load longer than 5 feet. Aggregate working load limit must be at least half the cargo weight.
- Load distribution: place heavy items low and centered; a high center of gravity increases rollover risk. Loads must be balanced front-to-back so steering and braking axles carry their share.
- Covering loads: gravel, sand, and similar loose material must be covered when required by regulation.
- Inspecting cargo: check securement before driving, after the first 50 miles, and every 150 miles or 3 hours thereafter.
Traps to Watch
A frequent trap is confusing total weight with axle weight. Another is the tiedown count - questions may state a load length and ask how many tiedowns are required. Remember the minimum of two for loads over 5 feet.
Worked Example
A 30-foot load needs at least 3 tiedowns (one per 10 feet), but since it exceeds 5 feet the minimum of two also applies - so 3 is the answer. A 6-foot load needs 2 (the minimum), not 1.