Securing cargo for the CDL test

Section 3.3 of the CDL handbook covers securing cargo with blocking, bracing and tiedowns. It is tested on the General Knowledge test.

Key facts

Part of	the General Knowledge test (80% to pass)	DL-7C p. iv
Handbook section	§3.3 Securing cargo	DL-7C p. 3-2
Questions in CDL Mile's bank	7	CDL Mile, checked against DL-7C

§ 3.3.5p. 3-3
You cannot inspect a sealed load, but you should still make sure you are not over the gross weight or axle weight limits.
Sealed and Containerized Loads
§ 3.3.2p. 3-2
The combined working load limit of the securement system must be at least half the weight of the cargo it holds. Half of 12,000 pounds is 12,000 ÷ 2 = 6,000 pounds.
Cargo Tie-down

General Knowledge · Securing cargo

While driving, you see in your mirror that the tarp over your open load is flapping. Why does the handbook treat this as a problem?

Tap an answer to see the explanation and the handbook page.

General Knowledge · Securing cargo

What is the main job of a front-end header board, sometimes called a headache rack?

Tap an answer to see the explanation and the handbook page.

Texas Commercial Motor Vehicle Drivers Handbook (DL-7C), revised March 2026, Texas Department of Public Safety. Page references are to its printed page numbers. CDL Mile is independent and not affiliated with Texas DPS.

Updated for the March 2026 Texas CDL handbook (DL-7C). Last checked November 4, 2026.

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