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CDL Hazmat Endorsement Practice Test 2026

The hazardous materials (H) endorsement is needed to drive any vehicle that must display placards. These questions cover the hazard classes, shipping papers, placarding, loading, driving and parking rules, and what to do in an emergency.

  • Pojazdy ciężarowe
  • Stany Zjednoczone
  • Pytania: 90
  • Sprawdzono 10 października 2026

W skrócie

Oficjalny egzamin ma 30 pytań. Aby zdać: Varies by state; usually 30 questions, with 24 correct needed (80%). Egzamin przeprowadza: Your state driver licensing agency, under federal rules set by FMCSA (49 CFR Part 383). Ćwicz tu za darmo na 90 pytaniach, każde z odpowiedzią i wyjaśnieniem. Sprawdzono z oficjalnymi źródłami 10 października 2026.

Przeczytaj, zanim zaczniesz ćwiczyćZacznij od przewodnika CDL Hazmat Endorsement Study Guide: przystępne notatki, rysunki i liczby do zapamiętania.

  1. Pytanie 1 z 25

    When do you need a hazardous materials (H) endorsement?
    Pokaż odpowiedź

    Odpowiedź: C. To drive a vehicle that needs placards

    A hazmat endorsement is required to drive a vehicle that needs placards.

  2. Pytanie 2 z 25

    Besides the knowledge test, what else is required to get a hazmat endorsement?
    Pokaż odpowiedź

    Odpowiedź: A. A TSA security threat assessment

    Original and renewal hazmat endorsements require a TSA security threat assessment, which includes fingerprints.

  3. Pytanie 3 z 25

    What must you do to renew a hazmat endorsement?
    Pokaż odpowiedź

    Odpowiedź: C. Retake the hazmat test and pass a new TSA check

    Drivers retake the hazmat knowledge test when they renew the endorsement, and the TSA check is also required at renewal.

  4. Pytanie 4 z 25

    When must entry-level driver training for a first hazmat endorsement be completed?
    Pokaż odpowiedź

    Odpowiedź: D. Before you take the hazmat knowledge test

    For a first H endorsement, ELDT must be completed before the hazmat knowledge test.

  5. Pytanie 5 z 25

    May a commercial learner's permit (CLP) holder drive a vehicle carrying placarded hazardous materials?
    Pokaż odpowiedź

    Odpowiedź: D. No

    A CLP holder may not drive a CMV transporting hazardous materials.

  6. Pytanie 6 z 25

    You are convicted of DUI for the first time while driving a placarded hazmat load. How long will you be disqualified?
    Pokaż odpowiedź

    Odpowiedź: A. At least 3 years

    Major offenses committed while transporting hazardous materials bring a 3-year disqualification for a first conviction.

  7. Pytanie 7 z 25

    How often must hazmat employees, including drivers, get hazmat training?
    Pokaż odpowiedź

    Odpowiedź: B. At least once every three years

    Hazmat training must be repeated at least once every three years.

  8. Pytanie 8 z 25

    Who decides a hazardous material's proper shipping name, hazard class, ID number and packing group?
    Pokaż odpowiedź

    Odpowiedź: A. The shipper

    The shipper identifies the material and decides the shipping name, hazard class, ID number, packing group, labels and placards.

  9. Pytanie 9 z 25

    Who packages, marks and labels a hazmat shipment and prepares the shipping papers?
    Pokaż odpowiedź

    Odpowiedź: A. The shipper

    The shipper packages, marks and labels the materials, prepares the shipping papers and supplies placards.

  10. Pytanie 10 z 25

    What is one of the carrier's jobs with a hazmat shipment?
    Pokaż odpowiedź

    Odpowiedź: C. Refusing bad shipments and reporting incidents

    The carrier checks the shipper's work, refuses improper shipments and reports accidents and incidents.

  11. Pytanie 11 z 25

    What is one of the driver's jobs with a hazmat shipment?
    Pokaż odpowiedź

    Odpowiedź: C. Refusing leaking packages and placarding the vehicle

    The driver checks labels and markings, refuses leaking or bad shipments, places placards, and keeps the shipping papers in order.

  12. Pytanie 12 z 25

    What is hazard Class 1?
    Pokaż odpowiedź

    Odpowiedź: B. Explosives

    Class 1 is explosives, divided into 1.1 through 1.6.

  13. Pytanie 13 z 25

    What does Division 1.1 mean?
    Pokaż odpowiedź

    Odpowiedź: D. Explosives with a mass explosion hazard

    Division 1.1 explosives can explode all at once (mass explosion). Division 1.4 has only a minor explosion hazard.

  14. Pytanie 14 z 25

    What is hazard Class 2?
    Pokaż odpowiedź

    Odpowiedź: B. Gases

    Class 2 is gases: 2.1 flammable, 2.2 nonflammable, and 2.3 poison gas.

  15. Pytanie 15 z 25

    What is Division 2.3?
    Pokaż odpowiedź

    Odpowiedź: A. Poison gas

    Division 2.3 is poison gas, one of the most dangerous materials.

  16. Pytanie 16 z 25

    What is hazard Class 3?
    Pokaż odpowiedź

    Odpowiedź: B. Flammable liquids

    Class 3 is flammable liquids, such as gasoline and many paints.

  17. Pytanie 17 z 25

    What does Division 4.3 mean?
    Pokaż odpowiedź

    Odpowiedź: C. Dangerous when wet

    Division 4.3 materials are dangerous when wet. 4.1 is flammable solid and 4.2 is spontaneously combustible.

  18. Pytanie 18 z 25

    What is hazard Class 5?
    Pokaż odpowiedź

    Odpowiedź: C. Oxidizers and organic peroxides

    Class 5 is oxidizers (5.1) and organic peroxides (5.2).

  19. Pytanie 19 z 25

    What is hazard Class 6?
    Pokaż odpowiedź

    Odpowiedź: D. Poisons and infectious substances

    Class 6 includes 6.1 poisonous materials and 6.2 infectious substances.

  20. Pytanie 20 z 25

    What is hazard Class 7?
    Pokaż odpowiedź

    Odpowiedź: B. Radioactive materials

    Class 7 is radioactive materials.

  21. Pytanie 21 z 25

    What is hazard Class 8?
    Pokaż odpowiedź

    Odpowiedź: B. Corrosive materials

    Class 8 is corrosives, which can destroy skin or eat through metal.

  22. Pytanie 22 z 25

    What is hazard Class 9?
    Pokaż odpowiedź

    Odpowiedź: B. Miscellaneous hazardous materials

    Class 9 covers hazards not covered by the other classes.

  23. Pytanie 23 z 25

    How must hazardous materials be shown on a shipping paper that also lists ordinary items?
    Pokaż odpowiedź

    Odpowiedź: C. Listed first, highlighted, or marked with an X in the HM column

    Hazmat entries must stand out: list them first, highlight them, or put an X in the HM column.

  24. Pytanie 24 z 25

    What does "RQ" mean on a shipping paper?
    Pokaż odpowiedź

    Odpowiedź: B. Reportable quantity

    RQ means reportable quantity. A spill of that amount or more must be reported.

  25. Pytanie 25 z 25

    What kind of emergency phone number must appear with a hazmat shipment's papers?
    Pokaż odpowiedź

    Odpowiedź: B. One answered 24 hours a day

    Shipping papers must give a 24-hour emergency response phone number.

Co warto wiedzieć przed egzaminem

  • Federal rules set the passing score for every CDL knowledge test: you must answer at least 80% of the questions correctly.
  • The hazmat test has 30 questions in states such as Washington and Illinois, so you need 24 correct answers.
  • You need a TSA security threat assessment, with fingerprints, for the original hazmat endorsement and at each renewal.
  • For a first hazmat endorsement, you must finish entry-level driver training before you take the hazmat knowledge test.
  • You must pass the hazmat knowledge test again when you renew the endorsement.
  • A CLP holder may not drive a vehicle carrying hazardous materials, and a first DUI while hauling placarded hazmat brings a 3-year disqualification.

Najczęściej zadawane pytania

How many questions are on the CDL hazmat test?

Each state sets the number, but Washington and Illinois both use 30 questions. You need 80%, or 24 correct.

What else do I need besides the test?

You need a TSA security threat assessment (a background check with fingerprints) and, for a first endorsement, entry-level driver training before the knowledge test.

When are placards required?

Table 1 materials, such as Division 1.1 explosives and poison gas, need placards in any amount. Table 2 materials in non-bulk packages need placards at 1,001 pounds or more in total.

Where do I keep hazmat shipping papers?

While driving, keep them within reach with your seat belt on or in the pouch on the driver's door. When you leave the cab, put them on the driver's seat or in the door pouch.

Do I have to retake the hazmat test to renew?

Yes. Drivers take the hazmat knowledge test again at renewal, and the TSA background check is repeated.

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