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  • Updated for May 2025
  • Based on 2025 DE commercial driver's license manual

Free Delaware CDL HazMat Endorsement Practice Test 2025

Ready to jumpstart your Commercial Driver’s License (CDL) with instant access to more job opportunities and potentially higher pay? Adding the Hazardous Materials (Hazmat) endorsement to your Commercial Driver’s License (CDL) is a powerful way to do just that! The Hazmat certification enables you to transport materials that the U.S. government regulates as hazardous. Explosives, certain types of fuel, industrial chemicals, and radioactive materials represent a whole new set of opportunities on the horizon. Above all, this endorsement ensures the highest level of safety for you, the people around you, and the environment.

The process for a Hazmat endorsement requires you to be fingerprinted, pass a background check, and pass the DMV knowledge test. The topics covered in this test include federal regulations, material handling, packaging, transport configurations, and quantity limits. Delaware’s knowledge test is made up of 30questions and you’ll need a score of at least 80% (24 out of 30 answers) to pass (Delaware CDL Handbook 2025). This requirement ensures that you are well prepared for the responsibilities that come with transporting hazardous materials. Lastly, the minimum age for the Hazmat endorsement is 21 for interstate transport, and in Delaware, this applies to intrastate work as well.

Okay, having shared all of that, let’s get back to the potential income increase available with this endorsement. According to the 2025 Delaware CDL manual, the Hazmat endorsement allows drivers to handle more specialized cargo hauls! In Delaware, there are multiple industries with cargo transport requiring a Hazmat endorsement, including chemical manufacturing (DuPont and Chemours are notable companies here), petroleum and energy, agriculture, waste management, healthcare and pharmaceuticals, and manufacturing and industrial services. That’s a lot of new job opportunities, but it does sound a little daunting, right? It doesn’t have to be at all.

Our Delaware DMV Hazmat Endorsement practice tests strategically circumvent all of the unnecessary information you’ll come across during an internet search and organize only the most relevant material in a design that mimics both the structure and content of what you’ll face at the {government-agency) site. When you feel ready, take your documents to the DMV, pay any fees, and take the official knowledge test.

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DE commercial driver's license
  • Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
  • Triple-checked for accuracy

What you need to know

4.47 out of 5 • 15 votes
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.
Ensuring the accuracy and quality of our program is paramount. Learn more about our rigorous standards in our Commitment to Accuracy article.

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