IL CDL General Knowledge Exam Simulator 2025

Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
Based on 2025 IL commercial driver's license manual
Triple-checked for accuracy
Updated for March 2025

When double clutching, what should you do if you have difficulty getting into the next gear? Do you know? If you’re not entirely sure of the official answer, perhaps it’s a good idea to study up with the official Illinois commercial driver’s manual and study our CDL General Knowledge practice tests. The tests have language directly from the real thing and with hints and progress reports to help you along, it is the best way to be prepared to succeed on the general knowledge test the first time you go to the DMV. The 50 question exam gives you only 60 minutes to achieve a score of 40 or more correct. Miss more than 10 questions and you fail and will have to take another day off to hit the DMV. No one wants that. But before you face the test, you also have to have all your ducks in a row. There are three pieces of paperwork that is expected of you at the Illinois DMV. One that you may not have lying around in a safe is a medical examiner’s certificate. These are only available from a licensed medical examiner, as listed on the Federal Motor Carrier Safety Administration (FMCSA) National Registry. Once you receive one they are generally good for two years, unless you have a condition that needs monitoring. Then, you’re also required to show proof of permanent residency or citizenship. For this a social security card or birth certificate is the kind of thing that is usually necessary. Lastly you just need a valid driver’s license. So study up and get organized, because it’s time you got that CDL and started making sweet cash by driving the roads of Illinois. Start studying today!

5 min to complete

Available in EN and ES

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What to expect on the actual IL DMV exam

questions

correct answers to pass

80%

passing score

Helpful links

IL DMV website

Official Illinois CDL manual (2025)

More IL DMV Written Exam Resources

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Our commitment to accuracy and quality in our practice tests

Explore our rigorous, multi-tiered verification process that ensures each question mirrors the official manual for unparalleled accuracy.

Written by Andrei Zakhareuski Updated over a week ago

At Driving-Tests.org, we understand the importance of reliable and accurate practice tests to help you prepare for your DMV exam. That's why we've developed a meticulous process to create and continually update our practice questions, ensuring they reflect the most current driving laws and regulations.

Here's an inside look at how we maintain the highest quality in our practice tests.

Content Creation and Verification Process

Alignment with Official Manuals:
Every question we develop is based on the most recent version of each state's official driving manual. Our team regularly monitors each state DMV's website for the latest updates to ensure our practice tests are always aligned with the most current information.
Community Feedback Integration:
We leverage feedback from our vast community of users to understand which topics are most frequently tested. This helps us focus on the areas that are most relevant and beneficial for your preparation.
Expert Content Creation:
Our in-house editor, Steven, who has extensive experience in driver education, crafts each question with precision. He conducts a thorough review of each question against the official manuals to ensure accuracy.
Rigorous Review Process:
Once Steven has finalized a set of questions, our team conducts a joint review session. This second level of scrutiny involves content accuracy, proofreading, and fact-checking to eliminate any errors.
User Feedback Mechanism:
After a question goes live on our site, we keep the lines of communication open. Each question features a feedback button, inviting users to report any issues or errors. This continuous feedback loop allows us to address and rectify any concerns promptly.
Responsive Updates:
In line with our commitment to accuracy, we quickly update our practice questions to reflect any changes in the DMV manuals. Additionally, we update the free electronic copy of the state's driver's license manuals on our site, typically within a few days after the DMV publishes them.

Our thorough quality control process ensures that you have access to practice tests that are as accurate and up-to-date as possible. We believe in the power of well-prepared drivers and are dedicated to providing you with the best study tools to help you succeed on your DMV exam.

IL CDL General Knowledge Exam Simulator

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