Practice Exam Questions And Correct

CDL Hazardous Materials (H) Endorsement Practice Exam Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• What is the primary purpose of the Hazardous Materials Regulations

(HMR)?

• To protect employers from liability
• To regulate vehicle speed limits
• To ensure the safe and secure transportation of hazardous

materials

• To increase shipping efficiency

Rationale: The HMR sets safety standards to prevent accidents and protect

people, property, and the environment during transport.

• Which of the following is considered a hazardous material?
• Apples
• Water 1 / 4

• Explosives
• Sand

Rationale: Hazardous materials include substances that pose risks to

health, safety, or property, such as explosives, flammables, and corrosives.

• What does the “H” endorsement allow a CDL driver to do?
• Drive oversized vehicles
• Operate passenger buses
• Transport hazardous materials
• Operate double/triple trailers

Rationale: The “H” endorsement specifically authorizes drivers to transport

hazardous materials in commerce.

4. Before transporting hazardous materials, a driver must:

• Have a first-aid kit
• Wear a uniform
• Have a security threat assessment from TSA
• Carry a GPS device

Rationale: Federal law requires drivers of hazardous materials to pass a

Transportation Security Administration (TSA) background check and receive a security threat assessment.

• Which placard would you use for a vehicle carrying gasoline?
• Explosive placard
• Flammable placard 2 / 4

• Corrosive placard
• Poison placard

Rationale: Gasoline is classified as a flammable liquid; vehicles carrying it

must display a flammable placard.

• What is the minimum number of emergency response information

documents a driver must carry?

• None
• One per shipment
• One for each hazardous material in the vehicle
• Five

Rationale: Drivers must carry emergency response information specific to

each hazardous material being transported.

• Which of the following is true about bulk packaging?
• It is smaller than 1 gallon
• It is designed to hold large quantities of hazardous materials
• It cannot be transported by highway
• It does not need a label

Rationale: Bulk packaging refers to containers designed to transport large

quantities, usually over 119 gallons for liquids.

8. When driving a vehicle carrying hazardous materials, you should:

• Drive faster to finish the route sooner
• Use only expressways 3 / 4

• Drive cautiously and obey all traffic rules
• Ignore traffic signs

Rationale: Safe driving is critical to prevent accidents involving hazardous

materials.

• What does a “Class 2” hazardous material include?
• Explosives
• Gases
• Radioactive materials
• Flammable solids

Rationale: Class 2 materials are gases, which can be compressed, liquefied,

or dissolved under pressure.

• Which type of hazard is indicated by a red placard?
• Corrosive
• Poison
• Flammable
• Oxidizer

Rationale: Red placards indicate flammable materials, alerting others to

fire hazards.

• What is the first step if you are involved in a hazardous materials

accident?

• Move the cargo
• Protect yourself and notify authorities
• / 4