⚠️CDL HAZMAT — Question 5 of 20

What is the purpose of placards?

Answer: A

To communicate risk to others

Placards identify the hazard class of the cargo to others so they can take appropriate action when needed.

All choices

  • ATo communicate risk to others
  • BTo prevent other drivers from passing
  • CTo allow priority access through security areas

Why the other answers are wrong

B. To prevent other drivers from passing

Placards do not prevent other drivers from passing; they communicate hazard information.

C. To allow priority access through security areas

Placards do not grant priority access through security areas; their purpose is hazard communication.

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CDL HAZMAT Test Info

Questions on Exam

30

Passing Score

80%

Time Limit

Typically 30 minutes; varies by testing location

The HAZMAT test content is federally standardized, so this question applies in every state. Age limits, fees, and testing procedures do vary — check your state's CDL requirements.

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