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Free Illinois CDL General Knowledge Test (IL)

  • Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
  • Based on 2024 IL commercial driver's license manual
  • Updated for July 2024
Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.
Commercial Driver's License

About this test

Available in EN and ES

If you want to acquire a Commercial Driver’s License from the State of Illinois, you’re going to have to pass a general knowledge test. This test covers all aspects of commercial driving, from basic care of your vehicle to road skills, from cargo loading to correct behavior in an emergency. You’re going to have to get a minimum of 80% on this test to obtain your CDL license. The questions below are taken directly from the 2024 Illinois CDL manual; each question has a hint to help you and a detailed explanation of the answer. Good luck!

[faq]

Illinois CDL FAQs in 2024

How do you obtain a CDL in Illinois?

To get a CDL in Illinois, start by obtaining a commercial learner’s permit (CLP) after passing the required knowledge tests. Hold the CLP for at least 14 days, then complete CDL training (optional but recommended) and pass the skills test. Ensure you meet all medical and legal requirements.

What is the cost of getting a CDL?

The cost for a CDL in Illinois includes a $50 fee for the CDL, plus additional fees for endorsements and CDL training programs, if you choose to enroll in one.

What are the different types of CDL?

In Illinois, CDL types include Class A (for combination vehicles), Class B (for heavy straight vehicles), and Class C (for vehicles designed to transport 16 or more passengers or hazardous materials).

What is the first step in getting a CDL?

The first step in getting a CDL in Illinois is to obtain a commercial learner’s permit (CLP) by passing the written knowledge tests for the type of vehicle you plan to drive.

How long does CDL training last?

CDL training duration in Illinois varies by program. Typically, it can range from a few weeks to several months, depending on the type of training (full-time or part-time) and the specific requirements of the CDL class you are pursuing.

Is CDL school required in Illinois?

CDL school is not mandatory in Illinois, but it is highly recommended. Proper training can significantly increase your chances of passing the skills test and being better prepared for a career in commercial driving.

[/faq]

Enhance your preparation with our comprehensive General Knowledge test collection, tailored to cover all key topics of the CDL exam. For a complete understanding of the expenses involved, check out our guide on CDL license cost, and for a step-by-step guide to getting your CDL, visit our CDL license guide.

What to expect on the actual IL CDL exam

30

questions

24

correct answers to pass

80

passing score

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