California CDL Prep Test

California CDL Prep Test is a comprehensive study tool for the California Commercial Driver License (CDL) exam. It offers interactive practice tests, bookmarkable questions, resume/restart options, progress tracking, and on-the-spot results to help you measure progress and target weak areas.

The app covers key CDL topics — Vehicle Inspection, Vehicle Control, Air Brakes, Hazmat, and Passenger Transport — with questions aligned to the California CDL handbook. It tracks your progress, lets you review explanations, bookmark questions for later study, and review past tests to maximize your chances of passing. Disclaimer: This app is a study aid and is not affiliated with any government organization.