CDL Prep is an app that contains over 500 questions to help you prepare for the Commercial Drivers License (CDL) Exam. This is a great application to help you pass your CDL Exam, as well as for helping you learn new things and stay on top of trucking laws and rules.

In the app, you can:

Take exams for CDL, Hazmat, Tank, and Combinations. This includes questions on passengers, air brakes, school buses. Review your progress and score in the app. See how you did on your exam.