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Idaho CDL HazMat Practice Test 4 2025

Average pass rate for CDL tests in Idaho: 69%.
Average pass rate for this test: 58%.
Hard
9 min
Score distribution:
90-100=>0%
80-89=>0%
70-79=>17%
60-69=>50%
<60%=>33%
Avg. first-try score: 62%

The HazMat endorsement is required by the states for drivers of commercial vehicles. The purpose of the HazMat endorsement is to ensure that drivers are aware of the hazards associated with the transportation of hazardous materials. When you need a job that requires the HazMat endorsement, preparing for the CDL knowledge exam is hard. The Idaho CDL manual is overwhelming, filled with information that’s often confusing and hard to remember. You need something where you could supplement the dry information with exam-like practice. This HazMat practice test will help you prepare. We’ve designed it to be the tool that will help you pass the official exam with ease – by covering the same materials that the real exam is based upon. You’ll be getting instant feedback after each question so you’ll know why every answer is correct. The answers are explained with easy-to-follow language. You’ll study at your own pace, and even review specific questions if they give you problems. Good luck!

Idaho CDL HazMat Practice Test 4 2025
ID commercial driver's license
Based on the official ID CDL HandbookHandbook‑based (2025) + exam‑taker feedback
5 ID students practicing now
•58completed today

Accuracy & authorship

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 at 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 Idaho DMV changes its handbook or website information.

Official sources we check: Idaho CDL Handbook (2025 edition), Idaho DMV website

How to use this practice test

  1. Start here. One of 4 free Idaho tests. ~9 min. Read explanations as you go.
  2. Cover more ground. All tests have different questions - no repeats.
  3. Finish strong. Try the Exam Simulator for a full-length run.

Why this works

  • Exam-like questions from the current handbook + real test-taker patterns. Explanations cite the manual.
  • AI Assistant explains tricky items in plain language.
  • Performance Insights show your weak topics and what to study next.
  • Challenge Bank™ saves your mistakes for targeted practice.

Actual DMV permit test: What to expect?

The Idaho permit test has 30 questions. You must get 24 correct (80%) to pass.
  • Where: Any Idaho DMV office (find locations)
  • Bring: ID + SSN + residency proof + permit/license fee (see checklist)
  • If you fail: Retake after 3 days.
  • Commonly missed: speed limits on highways, city streets, and residential areas, emergency vehicle right-of-way.
  • Ready to schedule? Book your ID DMV appointment

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

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