Practice Test GeeksCTS - Certified Transportation Specialist Practice Test
← All CTS Flashcard Decks

Hazardous Materials Transportation & Compliance Flashcards

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

Read the first 7 Hazardous Materials Transportation & Compliance flashcards as text

  1. Which U.S. federal agency has primary authority over the safe transportation of hazardous materials by highway, rail, air, and water?

    Answer: PHMSA (Pipeline and Hazardous Materials Safety Administration)

    PHMSA, a division of the U.S. Department of Transportation, is the primary agency responsible for issuing and enforcing regulations governing hazardous materials transportation.

  2. How many hazard classes does the DOT use to categorize hazardous materials under 49 CFR?

    Answer: 9

    The DOT recognizes 9 hazard classes, ranging from Class 1 (Explosives) through Class 9 (Miscellaneous Dangerous Goods).

  3. What does a UN identification number displayed on a hazmat placard or orange panel identify?

    Answer: The specific hazardous material or group of materials

    UN identification numbers (e.g., UN1203 for gasoline) identify the specific substance or group of hazardous materials, enabling responders to look up proper emergency procedures.

  4. Flammable liquids with a flash point at or below 60°C (140°F) are categorized under which DOT hazard class?

    Answer: Class 3

    Class 3 covers flammable liquids, defined as liquids with a flash point of not more than 60°C (140°F) or any material in a liquid phase with a flash point at or above 37.8°C (100°F).

  5. What is the minimum required dimension for each side of a DOT hazmat placard displayed on a transport vehicle?

    Answer: 9.84 inches (250 mm)

    Per 49 CFR 172.519, placards must be at least 250 mm (9.84 inches) on each side to ensure visibility from a safe distance.

  6. What does the designation 'forbidden' mean when applied to a hazardous material under DOT regulations?

    Answer: The material may not be offered or accepted for transportation under any circumstances

    'Forbidden' materials, such as certain explosive compounds, are so dangerous that no mode of transportation is permitted for them under any regulatory provision.

  7. Which packing group indicates the highest level of danger for a hazardous material under DOT regulations?

    Answer: Packing Group I

    Packing Group I (PG I) represents materials posing the greatest danger and requires the most stringent packaging standards, while PG III is the least dangerous of the three groups.