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Based on official Idaho exam questions

Free Idaho CDL Permit Practice Test: General Knowledge 2025

  • Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements.

Are you studying to pass the official Idaho General Knowledge test so you can become eligible for a Commercial Learner’s Permit (CLP)? Worried that you may not pass without some additional help? We’re glad you chose us to help you, because we’re sure you won’t be disappointed. You’re not the only one who hasn’t mastered commercial driving theory by just reading the official Idaho Commercial Driver’s License Manual (Idaho CDL Handbook 2025). That’s why many other aspiring commercial drivers have decided to supplement their reading of the manual with other study tools.

This free Idaho CDL permit practice test is based on the official manual, just like the official General Knowledge test. And the practice test is up to date as of October, 2025. Practicing with it will help reinforce what you read in the manual. In addition, each of the 50 practice questions comes with a helpful hint and an explanation of the correct answer. The practice questions on this test will assess your knowledge of such topics as basic maneuvers, cargo management, emergency preparedness, and pre-trip inspections. Keep practicing your knowledge with as many of our practice tests as you can, as often as you can, until you feel confident that you’ve mastered the material and can ace the official General Knowledge test.

There’s one other major test you must take for a CLP: a medical examination. Once you pass those tests and meet some other requirements, you can obtain a CLP and start practicing commercial driving so you can pass the skills test for your Commercial Driver’s License (CDL). The skills test consists of three parts: basic vehicle maneuvers (such as backing), a pre-trip inspection of the vehicle, and a road test.

Once you get your CDL, you can start taking advantage of profitable opportunities in commercial driving. Idaho produces huge quantities of agricultural products, most famously potatoes, but also wheat, barley, and dairy products, all of which require truck drivers to transport. Folks who don’t live in Idaho may think of it as an agricultural state, but the state also has a large and growing industrial sector, especially in science and technology. High-tech businesses also require truck drivers to transport equipment and supplies to them as well as transport their finished products.

Another important economic sector is tourism. Idaho attracts visitors all year round to its national parks, ski resorts, and other tourist and recreational areas, creating a constant demand for bus drivers.

Major commercial routes include Interstates 84 and 90, U.S. Route 95, and State Highway 55.

Pass the first time with Premium
99.06% of our Premium users pass first try
Available in EN and ES
ID commercial driver's license
Real exam-style pitfalls you’ll practice:
Common Traps
Distractors
Trick Wording
Double Negatives

Verified for accuracy: October 2025

Reviewed by Steven Litvintchouk, M.S.
Chief Educational Researcher (ACES member)
Methodology & Editorial Policy

What to expect on the actual ID permit test

50

questions

40

correct answers to pass

80%

passing score

Real Idaho drivers who passed first try

Verified student reviews • Shared with permission

I’ve had CDL for over 20 years.
Needed to add Hazmat, after studying your material, 100% on my test. Easiest test I have ever taken. Thanks!
D
I’ve had CDL for over 20 years.
Needed to add Hazmat, after studying your material, 100% on my test. Easiest test I have ever taken. Thanks!
D
I took air breaks,tanker,coupling and cdl test and passed them all.
i took air breaks ,tanker ,coupling and cdl test and passed them all . then i took my driving test passed it as well.
D
Couldn't be happier!
I was a little sceptical when I first learned of this website while searching for some information regarding CDL testing on Google. I downloaded a current PDF drivers manual from the DMV website, and read the information I needed in its entirery. I felt fairly confident by this point already, but after going through all the practice tests and flash cards on the site I could answer the questions without even thinking. I was sure once I got to the DMV to take the actual tests that the questions were going to be flipped around and worded completely different but to my surprise and relief they weren't! I passed the three tests that I had studied for with the help of driving-tests.org flawlessly. I honestly couldn't be happier with my results. Incase you haven't realized by this point, I would definitely recommend this website for your CDL test taking needs. C.
C
I passed my hazmat,missed 1 first try.
I passed my hazmat,missed 1 first try. but tanker I took needs to do again there were question on test that I did not know. all and all awesome program to use for any DMVtesting. ty
RR
I came into CDL/CLP realm with NO prior….
I came into CDL/CLP realm with NO prior experience of the material. Tried it twice, back to back, failed both times. I got this, spent a whole day doing the practice tests, marathons, ect. Took my tested today, passed with a 95%. 10/10 would recommend to anyone! Well if you really invest your time into the material! Thank you for this!
AA
Testing in a crunch!
Have my Cdl class B, passenger, and airbrake test in 4 days. I have completed all of the sections and I feel confident that I am going to pass these tree tests. Thank you for helping me out! Update! I passed all three tests no problem! We'll
BW
Best practice taker.
Studied the practice exam for a few hours before my written test passed with flying colors. Only hot two wrong. Yes its a little bit pricey but to get your cdl its well worth it. Thank you to whoever came up with this
WI
Recommend. Pass your test the first time around.
I’m currently training with a school for my CDL and hands-down it’s way easier to learn using these guys then sitting in the school’s classroom or zoom class that I paid for. Weather you are going to a school or not using this website helps 100%
HD
Used driving-tests.org to study for the CDL permit.
Used driving-tests.org to study for the CDL permit test. Completed all lessons in about two weeks and took my test and passed! Missing only 4 questions between the general knowledge, air breaks, and combination. I highly recommend this program.
LG
Flying colors yay!
I purchased 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
I purchased the Driving Test online….
I purchased the Driving Test online service for the CDL A test prep one day ago and it has totally cleared up the confusing way the information is presented the the state CDL manual. I have a better understanding of the testing questions and about the various maneuvers of trucking procedures because of how each practice question gives you added information on that question topic. I am able to select an answer, then re-read the question and think about why that answer is correct and read through the added information to absorb the steps and processes of what is being asked in the question. The Driving Test online service is an absolute must, not only to pass the test but to better understand the information in the state manual.
LC
Amazing Program.
Awesome 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 knowledge test, air brakes, combinations, and Doubles and triples got my eldt for hazmat and cdl A for a cheaper price, only thing left is the tanker endorsement and im good to go, 5 stars for them they deserve it👌🏼👌🏼🙏🏼🙏🏼
AL
The Q/A exam style works great.
The questions were relevant for each question pool. I passed each test on the first attempt. I didn't pay for the upgraded version because I also had a copy of my state's CDL handbook. However, with the combination of those two tools, but especially the ability to take the tests with this site, I was able to be successful and earn my CLP (Commercial Learner's Permit). I am currently enrolled in a CDL course at my local community college. The test pools they gave were useless. I firmly believe that if I hadn't used this site, I might not have passed those tests on the first try. My state (TX) has a law that allows three attempts per test. If you do not pass each of them within those three attempts, then you have to pay another CLP fee and start all over.
S
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

FAQs

How can you get yours?

To obtain a CDL license in Idaho, start by getting a commercial learner’s permit (CLP) after passing the required knowledge tests. Hold the CLP for at least 14 days before taking the skills test. Completing CDL training is recommended and then pass the skills test. Ensure you meet all medical and legal requirements.

What is the associated cost?

The cost for a CDL in Idaho includes a $40 application fee, a $29 fee for the knowledge test, and a $70 fee for the skills test. Additional costs may apply for endorsements and training programs.

What can disqualify you from being eligible?

In Idaho, disqualifications from obtaining a CDL include major traffic violations such as DUIs, reckless driving, certain criminal convictions, and failing the medical examination required for CDL holders.

How long does training last?

CDL training duration in Idaho varies by program. Full-time training can last from a few weeks to several months, depending on the school and the specific program.

Are you in another state?

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