Illinois CDL Test Prep

The most comprehensive Illinois Commercial Driver's License (CDL) practice test app is now available for Android! Previously only available for iPhone, our app features over 650 essential questions to help you prepare for the CDL Knowledge and endorsement tests.

The first topic, Air Brakes, is free. To access all practice questions an in-app purchase is available.

Features:
- More than 550 essential practice questions for the CDL knowledge and endorsement tests
- 120 road sign practice questions
- Preview answers to all practice questions
- Bookmark questions for later study
- Study mode has immediate answer checking and explanations
- Questions are not repeated until a topic is complete
- Practice tests are saved automatically and can be reviewed at any time

Sections included:
- Air Brakes (50)
- Combination Vehicles (52)
- Doubles and Triples (25)
- Driving Safely (204)
- Hazardous Materials (100)
- School Bus (60)
- Tank Vehicles (20)
- Transporting Cargo (21)
- Transporting Passengers (27)
- Road Signs and Signals (120)

These practice questions were developed by a professional driver and based upon the work supported by the Federal Motor Carrier Safety Administration.

Since 2009, AccelPrep™ has helped more than 600,000 students prepare for professional careers and standardized tests.