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CDL Hazardous Materials (H) practice test

For the H endorsement, to haul placarded hazardous materials. It also needs a federal background check; your state explains how.

Examlane has 204 Hazardous Materials questions in 8 chapters. The usual test has 30 questions and needs 80% to pass. Some states set a different length: see the state table.

Practice Hazardous Materials

Chapters

Manual sectionChapterQuestions
9.0Hazmat basics14
9.1Why the rules exist5
9.2Who does what5
9.3Shipping papers and placards70
9.4Loading and unloading20
9.5Bulk packaging17
9.6Driving and parking30
9.7Emergencies43

Chapter pages: Hazmat shipping papers and placards.

Ten free questions

Open a question to see the answer and why.

  1. 1. What are the diamond-shaped warning signs that certain hazardous materials loads must show on a vehicle called?
    1. Manifests
    2. Placards
    3. Permits
    4. Shipping orders

    Answer: B. Placards

    A vehicle that carries certain kinds or amounts of hazardous materials must display diamond-shaped warning signs called placards.

    Based on: CDL manual, Section 9.0 (Georgia edition of the national model manual, read 2026-10-24). Question in our own words.

  2. 2. The hazardous materials rules tell a driver how to do which of these?
    1. Package the material for shipping
    2. Choose the material's proper shipping name
    3. Load, transport, and unload the material
    4. Assign the material's packing group

    Answer: C. Load, transport, and unload the material

    Drivers are told how to load, transport, and unload hazardous materials, while shippers are told how to package them.

    Based on: CDL manual, Section 9.1.1 (Georgia edition of the national model manual, read 2026-10-24). Question in our own words.

  3. 3. Which of these tasks must a hazardous materials shipper do?
    1. Check the driver's hours of service
    2. Inspect the vehicle's tires before each trip
    3. Prepare the shipping papers
    4. Decide which route the driver takes

    Answer: C. Prepare the shipping papers

    Shippers are responsible for packaging, marking, and labeling the materials, preparing the shipping papers, providing emergency response information, and supplying placards.

    Based on: CDL manual, Section 9.2.1 (Georgia edition of the national model manual, read 2026-10-24). Question in our own words.

  4. 4. How many hazard classes do the hazardous materials rules have?
    1. Six
    2. Seven
    3. Nine
    4. Twelve

    Answer: C. Nine

    A material's hazard class reflects its risks, and there are nine different hazard classes.

    Based on: CDL manual, Section 9.3.1 (Georgia edition of the national model manual, read 2026-10-24). Question in our own words.

  5. 5. A tank stays on the vehicle while it is loaded and unloaded. What kind of tank is it?
    1. Cargo tank
    2. Portable tank
    3. Cylinder
    4. Drum

    Answer: A. Cargo tank

    Cargo tanks are attached to the vehicle and stay on it during loading and unloading. Portable tanks are loaded off the vehicle.

    Based on: CDL manual, Section 9.5 (Georgia edition of the national model manual, read 2026-10-24). Question in our own words.

  6. 6. Except for short stops needed to operate the vehicle, such as fueling, you must park at least how many feet from a bridge, tunnel, or building when hauling Division 1.1 explosives?
    1. 50 feet
    2. 100 feet
    3. 150 feet
    4. 300 feet

    Answer: D. 300 feet

    A vehicle hauling explosives in Divisions 1.1 through 1.3 may not park closer than 300 feet to a bridge, tunnel, building, crowd, or open fire, except for brief stops needed to operate the vehicle.

    Based on: CDL manual, Section 9.6.1 (Georgia edition of the national model manual, read 2026-10-24). Question in our own words.

  7. 7. The Department of Transportation's Emergency Response Guidebook is written to help which people stay safe, and keep the public safe, around hazardous materials?
    1. Firefighters, police, and industry workers
    2. Only truck drivers and their dispatchers
    3. Only people who work in hospitals
    4. Only inspectors at weigh stations

    Answer: A. Firefighters, police, and industry workers

    The guidebook is meant for emergency responders such as firefighters and police, and for industry workers.

    Based on: CDL manual, Section 9.7.1 (Georgia edition of the national model manual, read 2026-10-24). Question in our own words.

  8. 8. Before you load or unload hazardous materials, what must you make sure of?
    1. The cargo space doors are locked shut
    2. The parking brake is set and the vehicle will not move
    3. Every container has been opened and checked inside
    4. The cargo heater has warmed the cargo space

    Answer: B. The parking brake is set and the vehicle will not move

    Set the parking brake and make sure the vehicle cannot move before any loading or unloading starts.

    Based on: CDL manual, Section 9.4.1 (Tennessee edition, read 2026-10-25). Question in our own words.

  9. 9. For which vehicles must a driver hold a CDL with a hazardous materials endorsement?
    1. Only vehicles weighing 26,001 pounds or more
    2. Only vehicles pulling a trailer
    3. Only vehicles carrying hazardous materials across state lines or into Canada
    4. Any size vehicle carrying hazardous materials needing placards

    Answer: D. Any size vehicle carrying hazardous materials needing placards

    You need the endorsement to drive a vehicle of any size that carries hazardous materials in amounts that require placards.

    Based on: CDL manual, Section 9.0 (Georgia edition of the national model manual, read 2026-10-24). Question in our own words.

  10. 10. Which of these must a shipper provide to communicate a material's hazards?
    1. Emergency response information
    2. A copy of the carrier's insurance policy
    3. A written route plan for the driver
    4. The driver's hazardous materials endorsement

    Answer: A. Emergency response information

    Shippers must supply hazard warning labels, shipping papers, placards, and emergency response information to communicate the hazards.

    Based on: CDL manual, Section 9.1.2 (Georgia edition of the national model manual, read 2026-10-24). Question in our own words.

This is practice for the knowledge test. It is not Entry-Level Driver Training and does not count toward any federal training requirement.