Endorsement Practice Exam Questions

Ohio CDL Hazardous Materials Endorsement Practice Exam Questions And Correct Answers (Verified Answers) Plus Rationales 2025|2026 Q&A | Instant Download Pdf

• What is the purpose of the Hazardous Materials Regulations (HMR)?
• To simplify transportation laws
• To ensure safe transportation of hazardous materials
• To restrict the use of hazardous materials
• To promote faster delivery of goods

Rationale: The HMR ensures hazardous materials are transported

safely to protect people, property, and the environment.

• Who is responsible for safely transporting hazardous materials?
• The shipper only
• Both the driver and the carrier 1 / 4

• The manufacturer only
• The receiver

Rationale: The driver and carrier share responsibility for following all

safety and regulatory requirements.

• What does the term “placard” refer to?
• A driver’s license endorsement
• A diamond-shaped sign indicating the hazard class
• A label placed on shipping papers
• A safety manual for the driver

Rationale: Placards are diamond-shaped signs placed on vehicles to

indicate the type of hazardous material being transported.

• How often must drivers with a HazMat endorsement renew it?
• Every 10 years
• Every 8 years
• Every 5 years
• Every year

Rationale: The HazMat endorsement must be renewed every 5 years

along with a background check and knowledge test.

• What is required before a driver can obtain a HazMat endorsement?
• A vision test only
• A TSA background check
• A skills test
• A drug test only 2 / 4

Rationale: A TSA background check ensures that the applicant poses

no security threat.

• What must appear on the shipping papers for hazardous materials?
• Driver’s name
• Proper shipping name, hazard class, and ID number
• Carrier’s logo
• Receiver’s driver’s license number

Rationale: These details identify the material and its risks.

• What does the number in the center of a hazard placard represent?
• Packaging type
• UN or NA identification number
• Product price
• Shipment quantity

Rationale: The UN/NA number uniquely identifies the hazardous

material.

• What color is the placard for flammable liquids?
• Green
• Yellow
• Red
• White

Rationale: Red indicates flammable materials.

• What should you do if you discover a hazardous materials leak?
• Drive to the nearest truck stop 3 / 4

• Park, secure the area, and call for help
• Attempt to seal it yourself
• Ignore it if small

Rationale: Safety comes first—stop, isolate the area, and report

immediately.

• What document must be kept within reach of the driver at all

times?

• Bill of sale
• Route plan
• Shipping papers
• Insurance certificate

Rationale: Shipping papers must be accessible for inspection and

emergency responders.

• Where must the emergency response information be kept?
• In the glove box
• With the cargo
• With the shipping papers
• In the trailer

Rationale: Emergency response information must accompany the

shipping papers.

• Which class represents explosives?
• Class 1
• Class 3
• / 4