CDL Exam contains more than 600 questions to help you pass the California Commercial Driver License exam. Questions are classified into 8 categories:

- Commercial Driver License Knowledge Test
- Passenger Transport Endorsement Test
- Vehicle Code and Safety Driving Practices
- Hazardous Materials
- Air Brakes
- Combination Vehicles
- Doubles and Triples Vehicles
- Tank Vehicles

At the end of each test, a summary is given highlighting the questions that need more review.

One can also bookmark the key questions for later study.

What's New

Version 2.0.0

Updated for iOS 11.

Ratings and Reviews

4.6 out of 5

227 Ratings
227 Ratings

Great application


Overall your app is great. However I did notice that two of your questions are wrong. Both of these questions are located in general knowledge. For the first question, which of these may be a sign of tire failure? The answer is gently thumping. If you want to say fish tailing, you have to be specifically referring to the rear tires. Because failure of the rear tire will cause the vehicle to slide back & forth or fishtail. The second question said Stab breaking:? Stab breaking is Applying the breaks then releasing them when the wheels lock up. But before you apply the breaks again you wait for the wheels to begin rolling forward. You repeat this whole process until you stop. However your correct answer mentioned abs breaks which I have seen no mention of.

James M.

Great review material!


I'm here in Virginia and this app was very beneficial to me along with the state book. I studied all sections of the book twice and took these tests over and over and over. A lot of the questions were pulled right from the DMV test. If you go in and take the test just from going off of this app you will fail more than likely. I took mine today and passed every section only missed 2 questions out of all the Class A sections. Like I said the app was very beneficial in prepping for the test just make sure to get your book and study hard and you'll pass with no problems at all!! Good luck guys and gals!

What A Great App

Justin Harmeier

Illinois exam, class b with air brakes. I failed the first two times by just studying the book. However I did not recognize any of the questions on the test from the practice questions in the book. I downloaded this app and it helped me out tremendously! A lot of the questions on this app are on the cdl exam, core knowledge and air brakes. I passed the exam with only missing one answer. I couldn't have done it without this app! What a great tool to help study. But make sure you read the book because there will be questions on the test from the book as well.


Jung Ko
3.6 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© Jung Ko 2012


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