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ID CDL HazMat Practice Test 3 2025

Average pass rate for CDL tests in Idaho: 69%.
Average pass rate for this test: 83%.
Easy
6 min
Score distribution:
90-100=>22%
80-89=>44%
70-79=>22%
60-69=>11%
<60%=>0%
Avg. first-try score: 86%

Adding a Hazardous Materials (HazMat) endorsement to your Idaho CDL can significantly increase your job opportunities and earning power. Employers pay a premium for drivers licensed to transport cargo that the U.S. government has deemed hazardous. Major Idaho-based companies, including Freeport-McMoRan (mining and industrial chemicals), Honeywell (aerospace and manufacturing materials), and Sundt Construction (infrastructure and fuel transport), all rely on CDL drivers with HazMat endorsements.

To qualify, you must be 21 years old for interstate travel. You must also complete a Transportation Security Administration (TSA) fingerprinting and security background check before taking the official DMV HazMat test. While you wait for what can sometimes be weeks for the results, you’ll want to make certain you have completed all Entry-Level Driver Training (ELDT) for the Hazardous Materials Endorsement. You’ll also want to study for the final step: the DMV knowledge test.

ID CDL HazMat Practice Test 3 2025
ID commercial driver's license
Based on the official ID CDL HandbookHandbook‑based (2025) + exam‑taker feedback
2 ID students practicing now
• 87 completed today
Steven Litvintchouk, M.S., Chief Educational Researcher at Driving-Tests.org

Authored and fact-checked by Steven Litvintchouk, M.S.

Chief Educational Researcher, Driving‑Tests.org (ACES member)

Last verified for accuracy on

Methodology & Editorial Policy

Real Idaho drivers who passed first try

Verified student reviews • Shared with permission

Flying colors yay!
I got the hazmat and then decided to upgrade and take the tanker preparation testing too. Within a few days I felt prepared so I went in to DMV and took both tests and passed with 100% on each. Did not miss a single question.
JGB
Amazing program.
Practice tests are simply the best out there for CLP written test. Customer service is also amazing. Fast responses on the live chat during normal business hours. Amazing wealth of knowledge that's easy to understand. I passed my written test for CDL class A with air brakes, double/ triple, tanker, and Hazmat on the first attempt all on the same day after completing the program.
SP
I have passed my knowledge test.
I have passed my air brakes, combinations, and Doubles and triples, got my eldt for hazmat and cdl A, only thing left is the tanker endorsement and im good to go, 5 stars for them they deserve it👌🏼👌🏼🙏🏼🙏🏼
AL
Hazmat course.
Already had my CDL and signed up for the Hazmat course. If you know your stuff, you can complete the course in a few short hours. They sent my certification straight over to the FMCSA. I had my Hazmat endorsement the next day.
MTD

About the Idaho CDL

This Idaho CDL HazMat Practice Test is number three in our series, all scientifically designed to help you pass the official knowledge exam on your first attempt. Be sure to check out our other Idaho practice tests, one of which can be found here: https://driving-tests.org/idaho/id-cdl-hazmat-practice-test/. To pass the HazMat knowledge test, you must obtain a minimum score of 80%. The exam is based on the HazMat section (Chapter 9) of the Idaho CDL Manual (Idaho CDL Handbook 2025), covering placarding rules, safe loading and unloading, shipping papers, and emergency response procedures. Idaho’s 30-question knowledge test also covers federal regulations, substance handling, packaging, quantity limits, and transport configurations.

That’s a substantial amount of material to test on! Don’t worry! Our Idaho HazMat practice tests focus only on the material needed for the official test and mirror the format of the state exam. Our practice tests also provide real-time feedback. If you miss a question, the practice exam shows you exactly why another answer choice was the right one. This approach has been scientifically proven to speed the learning process.

Once you complete your ELDT needs, receive your TSA results, and feel prepared from all the practice, you’ll visit the DMV with the necessary documents, pay the fees, and pass the test with flying colors.

Be sure to review our entire suite of Idaho-specific practice tests and test prep for additional endorsements!

More ID CDL test resources

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

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