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IL CDL General Knowledge Exam Simulator 2026

5 min

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 2026). 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.

IL commercial driver's license
Original questions by our team Based on 2026 IL CDL Handbook
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

Reviewed for legal and handbook accuracy

Steven Litvintchouk

M.S., Chief Educational Researcher (ACES member)

Last verified for accuracy on

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 Illinois DMV changes its handbook or website information. Official sources we check: 

About the Illinois CDL

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.

We know what it takes to pass. And we’ve got the proof.

Driver’s Ed is - nobody wants to set foot inside the DMV. That’s why millions of learners trust us for simple, visual, effective prep.

An official & trusted partner in driver education

We are an officially recognized FMCSA Entry-Level Driver Training provider and a proud partner to over 2,500 libraries. We work with safety organizations like GHSA and the National Safety Council to help create safer roads for everyone.

A smarter way to study

Challenge Bank™

Our trademarked system automatically saves questions you miss, creating personalized tests that target your weak spots until you’ve mastered the material.

AI-powered feedback

Get smarter as you study. Our new AI-powered feedback provides detailed, question-level insights to help you understand the why behind each answer.

Interactive handbook

Go beyond the boring black-and-white manual. Our interactive handbook lets you read, listen with an MP3 audio version, or even chat with it to find the information you need, faster.