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Dangerous Goods Transportation Flashcards

7 cards from real CVOR practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Dangerous Goods Transportation flashcards as text

  1. DOT Class 3 hazardous materials are classified as:

    Answer: Flammable liquids

    Class 3 covers flammable liquids, including gasoline, diesel fuel, and acetone, which have a flash point below 60°C (140°F).

  2. What is the UN number displayed on hazardous materials labels and placards?

    Answer: A United Nations four-digit identification number for the specific hazardous substance

    UN numbers are internationally recognized four-digit codes assigned by the United Nations to identify specific hazardous substances or article groups.

  3. Radioactive materials are classified under which DOT hazard class?

    Answer: Class 7

    Class 7 specifically covers radioactive materials, requiring special handling, shielding, and transport index labeling.

  4. Which of the following is NOT a required element on a hazardous materials shipping paper?

    Answer: Driver's commercial license number

    Shipping papers must include the proper shipping name, hazard class, UN/NA number, packing group, and quantity — the driver's license number is not required.

  5. When transporting flammable liquids (Class 3), which is the most critical safety precaution?

    Answer: Ensure proper cargo ventilation and keep the load away from all ignition sources

    Flammable liquids emit vapors that can ignite; eliminating ignition sources and ensuring ventilation prevents fire and explosion.

  6. Which packing group designation indicates the HIGHEST level of danger for a hazardous material?

    Answer: Packing Group I

    Packing Group I indicates great danger and requires the most protective packaging, while PG II is medium danger and PG III is minor danger.

  7. What is the Emergency Response Guidebook (ERG) and who primarily uses it?

    Answer: A reference guide used by first responders to safely handle hazmat emergencies

    The ERG, published by PHMSA, gives first responders initial guidance on protecting themselves and the public during the first 30 minutes of a hazmat incident.