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  • Updated for January 2025
  • Based on 2025 MI commercial driver's license manual

Free Michigan CDL HazMat Practice Test 2025

Ah, Michigan! Known for its Great Lakes region (Lake Michigan, Lake Huron, and Lake Superior), the state offers drivers a wide range of seasonal challenges. From snows in winter to humidity-related road wear in summer, the trek across the state is filled with adventure. You’ll see the forested and hilly Upper Peninsula (U.P.), with its sparse roads and infrastructure. You’ll also see the flat rural farmland in the central and southern parts, featuring narrow and sometimes unpaved roads. All these regions present challenges and opportunities to drivers. Urban areas like Detroit and Grand Rapids add other challenges to transporting cargo in Michigan. But the rewards really start to pile up when you add endorsements to your Commercial Driver’s License (CDL). Adding the Hazardous Materials (Hazmat) endorsement is the key to unlocking new job prospects and increasing your earning potential!

What benefits come with obtaining this endorsement? First, you gain access to a much broader pool of job opportunities. Drivers interested in transporting materials classified hazardous by the U.S. government need the Hazmat endorsement to take on these specialized and often higher-paying jobs. In the Great Lakes State, hazardous materials transported include petroleum products, industrial chemicals, automotive chemicals, agricultural chemicals, and explosives (used in the construction and mining industries). Some prominent organizations requiring this endorsement in Michigan include Ford Motor Company in Dearborn, General Motors in Detroit, and Stellantis in Auburn Hills, as well as Marathon Petroleum in Detroit, Dow Chemical in Midland, and BASF in Wyandotte.

Let’s dive into how to get this endorsement added to your CDL. It starts with a mandatory fingerprinting and background check conducted by the Transportation Security Administration (TSA). Because of the weeks-long wait associated with this task, you should use that time to study and practice for the second step: the DOS knowledge test. This test, which requires a score of 80% to pass, covers federal regulations, substance handling, packaging, quantity limits, and transport configurations for hazardous materials (Michigan CDL Handbook 2025).

If this sounds daunting, don’t worry! Our Michigan DOS Hazmat Endorsement practice tests are designed to avoid unnecessary information and resemble what you will face on the official DOS test. Once you receive your TSA results and are ready, you’ll visit the DOS with the necessary documents, pay the fees, and pass the test.

  • Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements

What you need to know

7 min to complete
Available in EN and ES
Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.

What to expect on the actual MI DOS exam

30

questions

24

correct answers to pass

80%

passing score

List of questions (classic view)

  1. What are the major differences between cargo tanks and portable tanks?
  2. Which of the following materials are acceptable floor liners for moving Division 1.1 or 1.2 materials?
  3. How often should you check the tires on a placarded trailer that has dual tires?
  4. What are the two main places where the hazardous material identification number appears?
  5. Which of the following hazard classes uses a transport index to determine how much of it can be loaded on a single vehicle for transport?
  6. Do you need to stop before a railroad crossing if you are hauling 100 pounds of Division 4.3 materials?
  7. Your engine runs a pump when you are delivering compressed gas. After finishing the delivery, when should you turn off the engine?
  8. Which of the following is NOT an acceptable type of marking for hazardous materials?
  9. A placarded vehicle must carry a fire extinguisher with a minimum rating of
  10. If you are carrying Division 1.2 or 1.3 materials, how far away must you park from a bridge, tunnel, or building?
  11. The Emergency Response Guidebook (ERG)
  12. What is the purpose of a driver placarding his or her vehicle?
  13. To determine if you need to use placards, which of the following is NOT something you need to know?
  14. Cargo tanks are
  15. What action should you take if you discover your hazardous materials shipment leaking at a rest stop but there is no phone available?
  16. Which of the following are necessary qualifications for non-bulk packaging?
  17. When shippers package the material, they are trying to
  18. If you are already carrying 100 pounds of silver cyanide, what precautions must you take if you are given papers at a dock to carry 100 cartons of battery acid?
  19. Besides the shipping papers and the packages, the other two places where the hazardous material identification number must appear are
  20. Which of the following three hazard classes should NOT be placed into a temperature-controlled trailer (one with a heater/air conditioner unit)?
  21. What is a technical name?
  22. You must NEVER smoke or perform any activity involving fire within 25 feet of
  23. A safe haven is
  24. If you are carrying Division 1.2 or 1.3 materials, how far away must you park from the traveled portion of the roadway?
  25. In what location must you keep your shipping papers that describe any hazardous materials?
  26. Identification numbers are preceded by the letters "UN" or "NA." The letters "NA" are associated with proper shipping names that are used where?
  27. Which of the following hazard classes should NOT be placed into a temperature-controlled trailer (one with a heater/air conditioner unit)?
  28. If your vehicle is placarded, you must stop _______ feet before the nearest rail at a railroad crossing.
  29. Division 1.1 or 1.2 explosives must not be transported in a combination vehicle if the vehicle includes
  30. A hazard class name or ID number may not be used to describe
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