1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
  • 0 Incorrect (6 allowed to pass)
  • 0 Correct
Restart
 
 
 
 
 
Advertisement
Explore free tests
  • Updated for April 2025
  • Based on 2025 IL commercial driver's license manual

IL CDL General Knowledge Exam Simulator 2025

Becoming a commercial driver in Illinois can be a long and difficult process, but we’ll help you get through it by providing access to an efficient learning tool. As you begin your learning phase, you should read the official Illinois commercial driver’s license study guide (Illinois CDL Handbook 2025). It contains important information on the various aspects of commercial driving theory, including vehicle inspections, safe driving practices, and traffic laws. The official CDL permit test consists of 30 multiple-choice questions based on this manual. You must score at least 80% to pass, leaving little room for mistakes.

Our Illinois CDL General Knowledge Exam Simulator will help you determine your level of preparedness. This intuitive tool has been designed to closely reflect the content and format of the official exam, allowing you to simulate the official testing experience on your device. The only difference is that we have omitted any timer to let you think and analyze each question before you select an answer. If you make too many mistakes, the test ends immediately, and you’ll have to start a new session. Students unfamiliar with commercial driving should study the official handbook and practice with our CDL practice tests to build the knowledge necessary to become a commercial driver. Once ready, you should use our simulator to evaluate your performance before going to the DMV office to take the official exam.

Start today and consistently train with our simulator until your scores gradually increase. Building the foundation for your commercial driving career takes time and effort. You cannot rush or skip the learning phase, but with the right tools, you can master this subject within a few weeks. There are plenty of opportunities for beginner commercial drivers in Illinois. However, employers seek professional candidates who are serious about their job. Passing the official CDL general knowledge exam should not be your primary goal; it is just a step in the licensing process. Ensure you understand even the most advanced aspects of commercial driving because your future career depends on the knowledge you build today.

  • Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
This test is a Premium member exclusive. You'll get

All 650 exam-like questions specific to Illinois

Interactive learning with AI personal tutor

Unique 360° Virtual Road Simulations

Get your money back if you don’t pass

About this test

5 min to complete
Available in EN and ES
Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.

What to expect on the actual IL DMV exam

30

questions

24

correct answers to pass

80%

passing score

Are you in another state?

Your go-to, trusted source

Experience the Driving-Tests difference
Since our foundation in 2010, Driving-Tests.org has led the way in online driver's education, with over a decade of experience. Our dedicated experts, bringing together more than 50 years of collective expertise, have established us as the largest non-governmental organization in the U.S. solely focused on driver education. We go beyond the official manuals, offering unique interactive experiences and support like audio guides and an AI Assistant, to cater to different learning styles and needs.
Helping hundreds of thousands to ace their tests, our resources have earned a 4.7-star rating from over 14,500 reviews. Our goal is to make your path to becoming a confident driver as straightforward and effective as possible.
 (6  allowed to pass)
Restart test
Ask AI Coach
Ask DMV Genie AI
new
    Calculating your test results Your test results are ready
    Pass Your CDL Exam the First Time - Guaranteed

    Before you see your results, discover how CDL Premium helps you:

    • Real CDL Exam-Like Illinois Questions
      Questions match official CDL tests
    • Official FMCSA-approved
      ELDT Certification included
    • 99.06% Verified Pass Rate vs. 49% Average
      Proven success, specialized for CDL drivers

    Trusted by 1.15 Million drivers

    Secure Your CDL & ELDT Certification Continue to my results
    Opens in a new tab — your results are saved
    Try Driving-Tests Premium

    Pass the knowledge test the first time, guaranteed.