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CT CDL HazMat Practice Test 2 2026

Avg. pass rate on our CT tests: 60%.
Average pass rate for this test: 76%.
Easy
4 min
86% fail this test first try • Better here than at DMV
Score distribution:
90-100=>26%
80-89=>43%
70-79=>13%
60-69=>13%
<60%=>4%
Avg. first-try score: 86%

Adding a Hazardous Materials (HazMat) endorsement to your Connecticut commercial driver’s license (CDL) qualifies you to transport additional cargo and experience increased earnings. Our free Connecticut DMV HazMat Study Guide is different from the traditional types that you may have previously used. Instead of memorizing the answers to a set of questions, you take a series of on-line practice tests to assess your knowledge and receive comprehensive instruction to better understand your most troublesome topics. It is crucial to possess a firm understanding of the rules and regulations for transporting hazardous materials to avoid the costly and severe penalties for non-compliance. Hazardous materials are subject to stringent packaging, labeling, and storage requirements. Gasoline, pesticides, and explosives are some of the materials subject to these requirements. Just as the Elm City is populated with trees that nourish the environment, you need to develop the skills to protect it.

Our second Connecticut DMV CDL HazMat endorsement practice test provides additional training to enhance your ability to safely transport hazardous materials. To earn a HazMat endorsement, you are required to complete a hazardous materials theory training program, submit to a Transportation Security Administration (TSA) background check, and pass an official knowledge test. You must answer at least 80% of the 30 questions on the official knowledge test to pass. The practice test includes 30 questions, mimicking those on the official knowledge test, to help you achieve this score.

CT CDL HazMat Practice Test 2 2026
Commercial Driver's License
Original questions by our team Based on 2026 CT CDL Handbook

Reviewed for legal and handbook accuracy

Steven Litvintchouk

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

Last verified for accuracy on

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 Connecticut DMV changes its handbook or website information. Official sources we check: 

About the Connecticut CDL

This Connecticut DMV CDL HazMat endorsement practice test kickstarts the learning process with reliable information to overcome your learning obstacles. The practice test is based on the most recent Connecticut DMV CDL manual (Connecticut CDL Handbook 2026) and is up to date as of January 2026. If you submit an incorrect answer, you will receive a thorough explanation of the correct one to expand your knowledge. This interactive capability sets the practice test apart from traditional study methods as an encouraging and supportive resource. You’ll learn reliable information, be able to apply it to various driving scenarios, and increase your chances of passing the official knowledge test on your first try.

Using our practice tests, you will rapidly expand your skills. Each test, such as our CDL air brake practice test and our CDL pre-trip inspection practice test, uses the same format and offers an exceptional learning experience to support your success.

Drivers at Lime Rock Park race toward the finish line, and you can accelerate your acquisition of solid driving skills using the practice tests at https://driving-tests.org/connecticut/.

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More CT CDL test resources

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

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