Cargo Securement Standards for the CDL Exam

Common failure modes

These are the patterns that cause most candidates to lose marks on this topic. Recognising them in advance is half the work.

• !Confusing aggregate WLL (must equal at least 50% of cargo weight) with individual tiedown WLL
• !Forgetting the minimum tiedown count rule (1 per 10 ft of cargo length, minimum 2 for cargo > 5 ft)
• !Not knowing the commodity-specific rules for logs, automobiles, intermodal containers, large boulders, and metal coils

Study tips

• 1Memorize the formula: aggregate WLL of all tiedowns must equal at least 50% of the total cargo weight.
• 2Drill the minimum tiedown count: cargo ≤ 5 ft → 1 tiedown; cargo > 5 ft → 2 tiedowns; cargo > 10 ft → 1 additional tiedown for each additional 10 ft.
• 3For logs, automobiles, and metal coils, study the commodity-specific tables in 49 CFR §393.116–§393.120.
• 4Inspect tiedowns for cuts, abrasions, and knots before every trip — a damaged tiedown does not count toward the aggregate WLL.

Sample CDL Cargo Securement Standards questions

These sample items mirror the format and difficulty of real CDL questions. Practice with thousands more on the free Koydo question bank.

1. 1

   A 12-ft long piece of cargo weighing 4,000 lb is loaded onto a flatbed. What is the minimum number of tiedowns required, assuming each tiedown has a working load limit of 1,500 lb?

   • A1
   • B2
   • C3Correct
   • D4
   Why this answer?

   Length rule: cargo > 10 ft requires 2 tiedowns + 1 for each additional 10 ft → 3 tiedowns minimum. Aggregate WLL rule: tiedowns must total at least 50% of cargo weight → 2,000 lb. Three tiedowns at 1,500 lb each = 4,500 lb aggregate WLL, satisfying both rules.