Illinois CDL Test Prep is a comprehensive test preparation platform designed to help students pass the Illinois Commercial Driver License (CDL) written exam. Developed by Kelvin Beecroft, this program has been trusted by over 800,000 students since 2009.

The program offers a wide range of study aids, including a practice test with over 580 questions, the Illinois CDL Manual, and free access to road signs. The practice test covers various sections, such as Air Brakes, Combination Vehicles, Hazardous Materials, and more. Cheat sheets for topics like Air Brakes, Passenger, Cargo, and School Bus are also included, and they can be printed, copied to iBooks, or read within the program.

Illinois CDL Test Prep provides several useful features, such as the ability to preview answers, bookmark questions for later review, and immediate answer checking and explanations in study mode. Users can also share questions on Facebook to get help from friends. The program ensures that questions are not repeated until a topic is complete, and practice tests are saved automatically and can be restarted at any time.

Please note that the practice questions are available in English only and were developed by an expert driver based on the work supported by the Federal Motor Carrier Safety Administration.