IL CDL General Knowledge Marathon
Original questions by our team Based on 2026 IL CDL Handbook
Ready to put your new knowledge to the test? This Illinois CDL General Knowledge Marathon is a massive practice test that contains all 695 questions from our database for this IL endorsement. If you select a wrong answer, we’ll remember that question and will display it to you again at the end of the exam until you’ve answered that question correctly. In other words, the Marathon will cycle through your missed questions until you answer each one correctly. You must make a 100% to pass. We suggest you attempt this one after you have practiced the state’s “regular” tests, but before the “Exam”. Give it your best shot!