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Free Illinois CDL HazMat Endorsement Practice Test 2026

Avg. pass rate on our IL tests: 64%.
Average pass rate for this test: 71%.
Easy
7 min
80% fail this test first try • Better here than at DMV
Score distribution:
90-100=>26%
80-89=>26%
70-79=>23%
60-69=>14%
<60%=>10%
Avg. first-try score: 80%

Adding the Hazardous Materials (Hazmat) endorsement to your Commercial Driver’s License (CDL) is a great way to open new job opportunities and increase your earning potential in Illinois. The Hazmat endorsement permits drivers to transport materials that the U.S. government has deemed hazardous. These materials range from explosives to certain types of fuel and industrial chemicals to radioactive materials and infectious substances. The most important objective of this endorsement process is to ensure your safety and protect the people and environment in your driving area.

To add this valuable endorsement, you’ll need to pass a Transportation Security Administration (TSA) fingerprinting and background check and the DMV knowledge test. The knowledge test covers federal regulations, substance handling, material packaging, quantity limits, and transport configurations for hazardous materials. Illinois’s knowledge test is made up of 30 questions and must be passed with a score of at least 80% (24 out of 30 answers must be correct) (Illinois CDL Handbook 2026). Also note that the minimum age for the Hazmat endorsement is 21 for interstate travel, though Illinois does allow drivers aged 18 and older the endorsement when not crossing state lines.

Free Illinois CDL HazMat Endorsement Practice Test 2026
IL commercial driver's license
Original questions by our team Based on 2026 IL CDL Handbook
Steven Litvintchouk, M.S., Chief Educational Researcher at Driving-Tests.org

Reviewed for legal and handbook accuracy

Steven Litvintchouk

M.S., Chief Educational Researcher (ACES member)

Last verified for accuracy on

Andrei Zakhareuski, Co-founder & CEO, Driving-Tests.org

Test design and learning experience oversight

Andrei Zakhareuski

Co-founder & CEO, Driving-Tests.org

Questions are created and maintained by the Driving-Tests.org content team following our multi-layer editorial process and updated whenever the Illinois DMV changes its handbook or website information. Official sources we check: 

Real Illinois drivers who passed first try

Verified student reviews • Shared with permission

Worth your time.
I got it for my Hazmat test in Illinois. I did all the practice tests in two days. I took the actual test at the DMV the 2nd day. I passed the test. I missed 4 questions and I answered 28 out of 30 questions. I would recommend to take all of the practice tests and make sure you know all of the right answers.
ARH
So I am back.
Before I went to driving school this is the program I used. I took all 3 my exams missed 1 question one one. Missed 2 on the another and got a perfect 100% on the last test. So I am back to get my hazmat, double triple, and tanker license. Just to let you all know I am 51 and 7 kids, last child turned 18 in March and proud to be starting driving with my husband. I really doubted myself when I started this program. Put in the work and you shall succeed.
S
ELDT hazmat.
The material was easy to use. It covered a lot of material not in the handbook and went into more detail than the handbook. I have a better understanding of the material and a lot of good practice tests.
JS

About the Illinois CDL

With all of that in mind, let’s get back to the potential income increase available with this endorsement. According to the 2026 Illinois CDL manual, the Hazmat endorsement generally adds 10–20% to a driver’s pay! In Illinois, there are multiple industries with cargo transport that require a Hazmat endorsement. If you don’t have it, those jobs won’t be available to you. Illinois is substantial in its fossil fuel transport, manufacturing, agriculture (pesticides and fertilizers), and pharmaceuticals, and Illinois contains more nuclear power plants than any other state. This sounds amazing and a little daunting, right? It doesn’t have to be complicated at all.

Our online Illinois DMV Hazmat Endorsement practice tests are strategically designed to circumvent all of the extraneous information you’ll come across during an internet search and go straight to the relevant material. Our tests are designed to mimic both the structure and content of what you will face on the official DMV test.

Once you feel confidently prepared, you’ll visit the DMV with the necessary documents, submit your fingerprints and background check information, pay any related fees, and take the test.

More IL CDL test resources

  1. HazMat Test 1 (you are here)
  2. HazMat Test 2
  3. HazMat Test 3

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