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Question

Difficulty: EasyCargo Securement: Blocking and Bracing

A commercial driver is loading crated cargo onto a trailer deck and needs to prevent the cargo from sliding during transit. Where must blocking be placed and secured to properly perform this function?

  1. A
    Attached from the upper structure of the cargo to the top sidewalls of the trailer
  2. B
    Wrapped around tie-down chains to increase their aggregate working load limit
  3. Fitted snugly against the base of the cargo and secured directly to the trailer deckAnswer
  4. D
    Suspended between cargo units to replace the minimum number of required tie-downs

Answer

Fitted snugly against the base of the cargo and secured directly to the trailer deck
According to official commercial driving cargo securement standards, blocking is placed directly on the vehicle deck against the front, back, or sides of a piece of cargo to prevent it from sliding. It must be shaped to fit snugly against the cargo and secured to the floor.

Step-by-Step Solution

1
Identify the primary function and definition of cargo blocking according to commercial vehicle standards.
Blocking is used on the trailer floor against the front, back, or sides of an item to stop it from sliding.
Commercial driver regulations explicitly define blocking as floor-level securement fastened to the deck.
2
Differentiate blocking from bracing and supplemental tie-down requirements.
Bracing goes from the upper cargo to the walls/floor to prevent tipping, whereas blocking is anchored directly to the deck to prevent sliding.
Proper installation requires securing blocking directly against the base of the cargo on the cargo deck.

Key Concept

Cargo blocking placement and function
Estimated Time:45s
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Topics

Cargo Securement: Blocking and Bracing

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