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.

  • Nutzfahrzeug
  • Vereinigte Staaten
  • 90 Fragen
  • Geprüft am 10. Oktober 2026

Kurz und knapp

Die offizielle Prüfung hat 30 Fragen. Bestanden: Varies by state; usually 30 questions, with 24 correct needed (80%). Zuständig: Your state driver licensing agency, under federal rules set by FMCSA (49 CFR Part 383). Hier üben Sie kostenlos mit 90 Fragen, jeweils mit Antwort und Erklärung. Am 10. Oktober 2026 mit offiziellen Quellen abgeglichen.

Vor dem Üben lesenBeginnen Sie mit der Lernhilfe „CDL Hazmat Endorsement Study Guide“: leicht verständliche Notizen, Abbildungen und die wichtigsten Zahlen.
  1. Frage 1 von 25

    When do you need a hazardous materials (H) endorsement?
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    Antwort: C. To drive a vehicle that needs placards

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

  2. Frage 2 von 25

    Besides the knowledge test, what else is required to get a hazmat endorsement?
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    Antwort: A. A TSA security threat assessment

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

  3. Frage 3 von 25

    What must you do to renew a hazmat endorsement?
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    Antwort: 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. Frage 4 von 25

    When must entry-level driver training for a first hazmat endorsement be completed?
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    Antwort: D. Before you take the hazmat knowledge test

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

  5. Frage 5 von 25

    May a commercial learner's permit (CLP) holder drive a vehicle carrying placarded hazardous materials?
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    Antwort: D. No

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

  6. Frage 6 von 25

    You are convicted of DUI for the first time while driving a placarded hazmat load. How long will you be disqualified?
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    Antwort: A. At least 3 years

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

  7. Frage 7 von 25

    How often must hazmat employees, including drivers, get hazmat training?
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    Antwort: B. At least once every three years

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

  8. Frage 8 von 25

    Who decides a hazardous material's proper shipping name, hazard class, ID number and packing group?
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    Antwort: A. The shipper

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

  9. Frage 9 von 25

    Who packages, marks and labels a hazmat shipment and prepares the shipping papers?
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    Antwort: A. The shipper

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

  10. Frage 10 von 25

    What is one of the carrier's jobs with a hazmat shipment?
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    Antwort: C. Refusing bad shipments and reporting incidents

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

  11. Frage 11 von 25

    What is one of the driver's jobs with a hazmat shipment?
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    Antwort: 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. Frage 12 von 25

    What is hazard Class 1?
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    Antwort: B. Explosives

    Class 1 is explosives, divided into 1.1 through 1.6.

  13. Frage 13 von 25

    What does Division 1.1 mean?
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    Antwort: 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. Frage 14 von 25

    What is hazard Class 2?
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    Antwort: B. Gases

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

  15. Frage 15 von 25

    What is Division 2.3?
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    Antwort: A. Poison gas

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

  16. Frage 16 von 25

    What is hazard Class 3?
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    Antwort: B. Flammable liquids

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

  17. Frage 17 von 25

    What does Division 4.3 mean?
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    Antwort: C. Dangerous when wet

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

  18. Frage 18 von 25

    What is hazard Class 5?
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    Antwort: C. Oxidizers and organic peroxides

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

  19. Frage 19 von 25

    What is hazard Class 6?
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    Antwort: D. Poisons and infectious substances

    Class 6 includes 6.1 poisonous materials and 6.2 infectious substances.

  20. Frage 20 von 25

    What is hazard Class 7?
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    Antwort: B. Radioactive materials

    Class 7 is radioactive materials.

  21. Frage 21 von 25

    What is hazard Class 8?
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    Antwort: B. Corrosive materials

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

  22. Frage 22 von 25

    What is hazard Class 9?
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    Antwort: B. Miscellaneous hazardous materials

    Class 9 covers hazards not covered by the other classes.

  23. Frage 23 von 25

    How must hazardous materials be shown on a shipping paper that also lists ordinary items?
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    Antwort: 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. Frage 24 von 25

    What does "RQ" mean on a shipping paper?
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    Antwort: B. Reportable quantity

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

  25. Frage 25 von 25

    What kind of emergency phone number must appear with a hazmat shipment's papers?
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    Antwort: B. One answered 24 hours a day

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

Was Sie vor der Prüfung wissen sollten

  • 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.

Häufig gestellte Fragen

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.

Quellen

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