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Illinois CDL Class A Practice Test 2025

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

To get a Class A Commercial Driver’s License (CDL) in Illinois, you must meet several requirements set by the Secretary of State (DMV) and the Federal Motor Carrier Safety Administration (FMCSA). The licensing process begins by obtaining a Commercial Learner’s Permit (CLP), which requires passing the official general knowledge written exam and two additional written tests, depending on your goals. For a Class A CDL, aspiring commercial drivers must also score 80% or higher on the official combination vehicles knowledge exam. Since most commercial vehicles are equipped with an air braking system, you should also consider passing the official air brakes knowledge test to remove the L restriction from your CDL. The passing score for this test is also 80%.

You must also complete Entry-Level Driver Training (ELDT) from a provider listed in the Training Provider Registry (TPR). This training includes both theory and behind-the-wheel instruction. Once you’ve completed the training and gained enough experience, you can schedule a CDL skills test, which includes a pre-trip inspection, a basic control test, and an on-road driving exam.

Our Illinois CDL Class A Practice Test can help you learn the theory behind safe commercial driving. This intuitive tool has been designed to boost your learning potential. It consists of 95 multiple-choice questions based on the official Illinois Commercial Driver’s License Study Guide (Illinois CDL Handbook 2025). You must score 80% or higher to pass, leaving little room for error.

Do not get discouraged by a failed attempt. Mistakes are a natural part of the learning journey, and we help you learn from them. Each question you get wrong will be automatically added to your personal Challenge Bank™, where you’ll find detailed explanations and helpful insight. Questions in your Challenge Bank will remain there until you answer them correctly, so we recommend visiting this section regularly.

Your dream career is within reach. Every hour you spend learning commercial driving theory brings you closer to getting your Class A CDL. Use our Illinois CDL Class A Practice Test alongside the official commercial driver’s license study guide to master this subject and ace the official written knowledge exam on your first attempt.

Real exam-style pitfalls you’ll practice:
Common Traps
Distractors
Trick Wording
Double Negatives
Illinois CDL Class A Practice Test 2025
IL commercial driver's license
Based on official IL exam questions
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

10 min to complete
Available in EN and ES

What to expect on the actual IL permit test

30

questions

24

correct answers to pass

80%

passing score

Real Illinois drivers who passed first try

Verified student reviews • Shared with permission

Teaches you everything you need to know.
Passed my hazmat test in only 24 hours of studying the material. I loved my experience and will forever recommend.
DR
Is helpful. It is probably the most in-depth program.
It is helpful. It is probably the most in-depth program that I have ever seen. It will give you the opportunity to learn everything you need to know to take your testing. As far as my schedule goes, it was really helpful to be able to do something online and not in person, on my own time and at my own progression level, and complete the program as quickly as I could possibly complete it. I was also able to go back and retake things, retest, and relearn some of the knowledge that I needed to learn in order to upgrade my license.
S
Driving Tests is easy and simple.
Driving Tests is a great place to study. It really helps you prepare for any exams that you wish to take at the DMV. I love how simple it is to use and has a very modern look to it, which makes it comfortable to use. Their AI feature also helps a lot too in case you need help with a question. It has helped me obtain my CDL and a HazMat edorsment. I would highly recommend this site to those who want to 100% pass their exams for both a DL or a CDL.
JM
49 year old test taker.
This site is amazing being older now I don’t absorb as much information and retain it like I use to but with this site I’m able to see where I am and the more I study and take these test I’ve been able to pass the Illinois cdl on the 1st try after failing three times in a row before I got the site
B
I must said and you have my #1 topapp….
I must said and you have my #1 topapp that i recommend anyone and everyone taking this test to achieve their goals in CDL driving take this practice test to take this site and you will achieve you will pass I am a witness my right hand of God best app ever it's been 32 years since I took in this test or any of these tests I was the first African America in Chicago Illinois to receive my CDL license and I have not failed yet God bless
JB

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