CDL Hazmat Test Questions and Answers 2025 [PDF]

CDL Hazmat Test Questions and Answers 2025 [PDF]: You can also download соmmеrсіаl drіvеr’ѕ license (CDL) Hazardous Material Endorsement Practice Test PDF for better-written test preparation.

You must have a commercial driver’s license (CDL) with a hazardous materials endorsement before driving vehicles carrying hazardous materials that require placards. You must pass a written test on the regulations and requirements to get this endorsement.

Our CDL Hazmat Test Questions and Answers PDF will help you prepare for the written test. However, this is only the beginning. Most drivers need to know much more on the job. You can learn more by reading and understanding the federal and state rules applicable to hazardous materials as well as attending hazardous materials training courses.

CDL Hazmat Test Questions and Answers

Test Name	CDL Practice Test 2025
Language	English
License	Endorsements Permit
Total Questions	30
Test For	Commercial Driver License
Test Preparation	Hazardous Material Endorsements
Country	USA
Explanation	No

0 votes, 0 avg

CDL Hazardous Materials Test

1 / 30

f you are transporting hazardous cargo, what is an acceptable place to keep the shipping papers?

A) In a pouch in the driver’s door

B) Anywhere within reach and within view

C) All of the above

D) On the driver’s seat when you are not in the vehicle

2 / 30

You discover a fire in your vehicle while transporting hazardous materials. Which of the following is a proper procedure?

A) Use a fire extinguisher to fight a cargo fire.

B) Put the shipping papers in the driver’s door and leave the vehicle.

C) Run for help.

D) Feel the cargo doors to see if they are hot.

3 / 30

The person watching someone load or unload a cargo tank must be within ____ feet of the tank

A) 10

B) 20

C) 50

D) 25

4 / 30

You must carry with you a written route plan when transporting

A) Division 1.1 explosives.

B) Division 1.1, 1.2, or 1.3 explosives.

C) Division 1.4 explosives.

D) radioactive materials.

5 / 30

Which of the following combinations of materials in the same vehicle is allowed?

A) Silver cyanide and battery acid

B) Poison A and organic peroxide

C) Division 1.1 (Class A) explosives and charged storage batteries

D) None of the above

6 / 30

What does the transport index on a package label tell you?

A) How far the package can be transported safely

B) The degree of control needed during transport

C) How much the package weighs

D) The reportable quantity for a spill

7 / 30

The _________ pays for the cleanup of contaminated parking lots, roadways, and drainage ditches caused by cargo leakage.

A) driver

B) Department of Transportation

C) shipper

D) carrier

8 / 30

If you discover a cargo leak, what should you do?

A) Park upwind of people and buildings.

B) Stay in your vehicle until help comes.

C) Try to find the source of the leak by smell.

D) Identify the material by using shipping papers, labels, or package location.

9 / 30

For any package labeled INHALATION HAZARD, the vehicle transporting that package must have ______ placards

A) OXYGEN

B) DANGEROUS

C) OXIDIZER

D) POISON

10 / 30

You are transporting Division 1.1 explosives and you need to park and leave your vehicle. You may let someone else watch your vehicle if your vehicle is

A) parked on a bridge.

B) parked on the shipper’s property.

C) parked for less than 20 minutes.

D) carrying less than 100 pounds of Division 1.1 explosives.

11 / 30

With which division(s) of explosives must you use a floor lining?

A) 4.1

B) 6.1

C) 2.1, 2.2, and 2.3

D) 1.1, 1.2, and 1.3

12 / 30

You cannot have overhang or tailgate loads of

A) flammable solids, flammable liquids, or oxidizing materials.

B) explosives, flammable solids, or oxidizing materials.

C) explosives, flammable liquids, or oxidizing materials.

D) explosives, flammable solids, or flammable liquids.

13 / 30

Your load contains 10 pounds of radioactive material, 500 pounds of flammable gas, and 1,000 pounds of nonflammable gas. What placards do you need?

A) RADIOACTIVE, FLAMMABLE GAS, NONFLAMMABLE GAS

B) NONFLAMMABLE GAS

C) RADIOACTIVE, FLAMMABLE GAS

D) RADIOACTIVE, NONFLAMMABLE GAS

14 / 30

n order to determine which placards you must use for a particular hazardous material, which column of the Hazardous Materials Table should you check?

A) Column 4, “Label(s) required”

B) Column 3, “Hazard class”

C) Column 2, “Hazard materials descriptions and proper shipping names”

D) Column 3a, “Identification number”

15 / 30

You should not smoke or carry a lighted cigarette, cigar, or pipe within 25 feet of any vehicle that contains

A) oxidizers

B) All of the above

C) flammables

D) explosives

16 / 30

If a shipment contains hazardous materials requiring placards, who is responsible for placarding the vehicle?

A) The carrier

B) A law enforcement officer

C) The driver

D) The shipper

17 / 30

Corrosive liquids should never be loaded next to or above

A) oxidizing materials.

B) flammable solids.

C) Class A explosives.

D) All of the above

18 / 30

What does a star after an entry in the List of Hazardous Substances and Reportable Quantities mean?

A) This substance also appears in the Hazardous Materials Table.

B) This substance is a poison.

C) This substance is extremely hazardous.

D) This substance is not hazardous.

19 / 30

Under which of the following circumstances must you stop before crossing railroad tracks?

A) Your vehicle has an OXYGEN placard.

B) You are carrying chlorine.

C) All of the above

D) Your vehicle has empty cargo tanks.

20 / 30

A driver transporting _________ in cargo tanks must have an approved gas mask in the vehicle.

A) oxygen

B) chlorine

C) carbon dioxide

D) gasoline

21 / 30

Besides the material’s hazard class, what else determines which placards you must use?

A) The weight of your vehicle

B) The distance you are traveling

C) The amount of material being shipped

D) The cost of the material

22 / 30

You should not transport substances that are “Forbidden.” In which column of the Hazardous Materials Table should you look to determine if a material you have been given by a shipper is forbidden?

A) Column 3, “Hazard class”

B) Column 4, “Label(s) required”

C) Column 3a, “Identification number”

D) Column 1, “+/A/W”

23 / 30

A placarded vehicle must have _____ identical placards.

A) 4

B) 3

C) 5

D) 2

24 / 30

Your vehicle is involved in a collision while you are transporting explosives. Which of the following is a proper thing to do?

A) Separate the vehicles from each other, and then remove the explosives from your vehicle.

B) Place the explosives at least 100 feet from the vehicles and occupied buildings.

C) None of the above

D) Get bystanders to assist you in emptying your vehicle.

25 / 30

If hazardous material is spilling from your vehicle, what should you do?

A) Park your vehicle and send someone else for help.

B) Drive to the nearest truck stop and get help.

C) Park your vehicle and go for help.

D) Drive to the nearest phone booth and call for help.

26 / 30

You have had an accident while transporting hazardous materials. In which of the following circumstances must you or your employer phone the National Response Center?

A) A person is killed as a result of the accident.

B) A person suffers a minor injury as a result of the accident and is treated at the scene.

C) All of the above

D) Estimated property damage of $10,000 occurs as a result of the accident.

27 / 30

A package labeled _________ should not be loaded in the driver’s cab or sleeper.

A) POISON GAS or IRRITANT

B) POISON or POISON GAS

C) POISON or IRRITANT

D) POISON, POISON GAS, or IRRITANT

28 / 30

You are transporting Class B explosives and your vehicle breaks down. What should you use to signal for help?

A) Flares

B) Fusees

C) Yellow electric lights

D) Reflective triangles

29 / 30

Which three classes of hazardous materials should not be loaded in a cargo space that has a heater?

A) Explosives, flammable gases, flammable liquids

B) Flammable gases, flammable liquids, flammable solids

C) Flammable gases, flammable liquids, oxidizers

D) Explosives, flammable gases, oxidizers

30 / 30

You are transporting hazardous materials in a vehicle with dual tires and have just checked your tires for proper inflation. How soon must you stop and check your tire pressure again?

A) In 1 hour

B) In 3 hours

C) In 2 hours or 100 miles, whichever is less

D) In 50 miles

Your score is

The average score is 74%

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