CDL Hazmat Test 2025 Questions Answers:

CDL Hazmat Test 2025 Questions Answers: This CDL Hazmat Practice Test contains roughly 35 questions and answers with explanations that are very similar or sometimes the same as the official CDL Hazmat Test.

Pass your state’s Hazmat Test with confidence! Our free CDL Hazardous Materials (HazMat) endorsement test study guides include multiple-choice with true/false questions with answers covering all CDL H: Hazardous Material (required to transport hazardous materials; requires a Knowledge test and the TSA Threat Assessment).

To get the endorsement, simply go to your state’s Department of Motor Vehicles (DMV), request the Tanker Endorsement Knowledge Test and pay the fees, which average around twenty dollars.

HazMat (H), combination Tank-HazMat (X), and Farm-HazMat (Z) endorsements — required to haul hazardous materials or waste in amounts that require placards or any quantity of a material listed as a select agent or toxin in 42 CFR 73

CDL Hazmat Test 2025

Test Name	CDL Practice Test 2025
Language	English
License	Endorsements Permit
Total Questions	25 sample questions answers
Test For	Commercial Driver License
Test Preparation	Hazardous Material Endorsements
Country	USA
Explanation	Yes

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344

CDL Hazardous Material Practice Test

1 / 25

What does RQ stand for?

A) Radioactive quantity

B) Reportable quotient

C) Reportable quantity

2 / 25

At a rest area you discover your hazardous materials shipments slowly leaking from the vehicle. There is a no phone around. What should you do?

A) Park and secure your vehicle, then send someone for help.

B) Drive to the nearest phone booth

C) Drive to the nearest fire station

D) Have vehicle towed to nearest mechanic

3 / 25

Which class of material requires a “transport index”?

A) Class 2 (Compressed Gases)

B) Class 7 (Radioactive)

C) All of the above

D) Class 1 (Explosives)

4 / 25

All of the following are things you need to know to decide which placards (if any) you need, except?

A) Amount being shipped

B) Amount of all hazardous materials of all classes

C) Amount of flammable material

D) Material’s hazard class

5 / 25

How close to the traveled part of the roadway can you park with Division 1.2 or 1.3 materials?

A) Within 5 feet of a the traveled part of the road

B) Within 10 feet of a the traveled part of the road

C) Within 15 feet of a the traveled part of the road

6 / 25

The floor lining for Division 1.1, 1.2, or 1.3 explosives should be stainless steel.

A) True

B) False

7 / 25

Flammable solids only catch fire when exposed to heat.

A) True

B) False

8 / 25

The transport index of all packages in single vehicle must not exceed

A) 75

B) 25

C) 100

D) 50

9 / 25

What type of fire extinguisher must placarded vehicles carry?

A) fire extinguisher with a UL rating of 20 B:C or more

B) fire extinguisher with a UL rating of 5 B:C or more

C) fire extinguisher with a UL rating of 10 B:C or more

D) fire extinguisher with a UL rating of 15 B:C or more

10 / 25

Never smoke around the following hazard classes: Class 1 (Explosives), Class 2.1 (Flammable Gas), Class 3 (Flammable Liquids), Class 4 (Flammable Solids), Class 5 (Oxidizers).

A) False

B) True

11 / 25

Bulk packaging permanently attached to a vehicle is known as

A) Cargo tanks

B) Permanent tanks

C) Supply tanks

D) Portable tanks

12 / 25

Which hazard classes should not be loaded into a trailer that has a heater/air conditioner unit?

A) Class 1 (Explosives), Class 2.1 (Flammable Gas), Class 3 (Flammable Liquids)

B) Class 1 (Explosives), Class 2.1 (Flammable Gas)

C) Class 1 (Explosives), Class 3 (Flammable Liquids)

D) Class 1 (Explosives), Class 3 (Flammable Liquids), Class 4(Flammable solids)

13 / 25

Can you load Silver Cyanide and battery acids in the same vehicle?

A) No

B) Yes

14 / 25

If your placarded trailer has dual tires, how often should you check the tires?

A) At the beginning of a trip and every 100 miles

B) At the beginning of the trip and each time the vehicle is parked

C) At the beginning of a trip and every 100 miles or 2 hours

D) At the beginning of the day and end of the day

15 / 25

Some localities prohibit transportation of hazardous materials through tunnels, over bridges, or other roadways.

A) False

B) True

16 / 25

Where must shipping papers be kept?

A) Pouch on driver’s door

B) Clear view within immediate reach while the seat belt is fastened while driving

C) All of the above

D) Driver’s seat when out of the vehicle

17 / 25

Your engine runs a pump used during delivery of compressed gases. You should turn off the engine before unhooking the hose.

A) False

B) True

18 / 25

How close can you park to a bridge, tunnel, or building with the Division 1.1, 1.2. Or 1.3 materials?

A) At least 300 feet away

B) At least 150 feet away

C) At least 100 feet away

D) At least 200 feet away

19 / 25

Regulations require that hazardous materials employees be trained and tested at least once every how many years?

A) 5 years

B) 2 years

C) 3 years

D) 4 years

20 / 25

A hazardous materials ID number must appear on the ___ and on the ___. The ID number must also appear on cargo tanks and other bulk packaging.

A) Placard and shipping paper

B) None of the above

C) Placard and package

D) Shipping paper, package

21 / 25

If you are carrying less than 100 pounds of Division 4.3 (Dangerous when wet) materials, you do not need to stop before a railroad-highway crossing.

A) True

B) False

22 / 25

Drivers placard their vehicle in order to ___ the risk.

A) Communicate

B) Hide

C) Reduce

D) Contain

23 / 25

The Emergency Response Guide is a guidebook for firefighters, police, and industry workers on how to protect themselves and public from hazardous materials.

A) True

B) False

24 / 25

Shippers package in order to ___ the risk

A) Communicate

B) Reduce

C) Hide

D) Contain

25 / 25

A safe haven is a approved place for parking unattended vehicles loaded with explosives.

A) False

B) True

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