Practice Test Geeks(FRA) Federal Railroad Administration Certification Practice Test
← All FRA Flashcard Decks

Hazardous Materials Transportation Flashcards

7 cards from real FRA 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 flashcards as text

  1. A railroad employee discovers a leaking tank car of anhydrous ammonia. What is the FIRST action required under FRA/DOT incident response rules?

    Answer: Notify the emergency contact number on the shipping paper and isolate the area

    The immediate priority is to isolate the hazard and notify emergency responders via the 24-hour emergency contact number listed on the shipping paper.

  2. Which packing group designation indicates the HIGHEST degree of danger for a hazardous material?

    Answer: Packing Group I

    Packing Group I (PG I) designates materials presenting the greatest danger, requiring the most stringent packaging standards.

  3. Under 49 CFR Part 174, where must hazmat shipping papers be kept while a train is in motion?

    Answer: In a holder or location readily accessible to the train crew in the locomotive cab

    Shipping papers must be immediately accessible to the train crew in the locomotive cab so they can be retrieved quickly during an emergency.

  4. What does the 'Z' suffix after a UN number on a shipping paper indicate?

    Answer: The material is a marine pollutant

    A 'Z' suffix (e.g., UN1234Z) is not standard; however, the marine pollutant designation (M) is a common modifier—but under DOT rules the 'RQ' prefix signals a reportable quantity, not 'Z'.

  5. Which federal agency has primary regulatory jurisdiction over hazardous materials transportation by rail in the United States?

    Answer: PHMSA and FRA jointly

    The Pipeline and Hazardous Materials Safety Administration (PHMSA) sets hazmat transport regulations, while the FRA enforces railroad safety compliance.

  6. A train consists of 20 or more loaded tank cars of a single flammable liquid commodity. Under HM-251, what special operating requirement applies?

    Answer: The train is classified as a High-Hazard Flammable Train (HHFT) with speed restrictions and route analysis requirements

    HM-251 defines High-Hazard Flammable Trains (HHFTs) and imposes speed restrictions (typically 40–50 mph) and mandatory route analysis and selection requirements.

  7. What color and shape is the placard required for Division 2.3 (Poisonous Gas) materials?

    Answer: White diamond with black skull and crossbones

    The POISON GAS placard is a white diamond bearing the skull-and-crossbones symbol and the text 'POISON GAS' or 'TOXIC GAS'.

How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy

Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

  1. ecfr.gov — Score validity, test delivery, exam format, retake policy, eligibility · verified Oct 2026