Prepare for your Commercial Driver's License exam with practice tests and detailed explanations. Access official handbooks and track your progress to master general knowledge and endorsement topics.
1.75
July 1, 2026
Minor bug fixes we constantly update app in order to improve user expirienece.
Get Full Access to Cheatsheets & Handbook
CDL Prep covers General Commercial knowledge, Air Brakes, Combinations, Hazmat, Passenger, Tanks, School Bus, and Doubles/Triples endorsements. It offers practice questions for each of these categories.
The app offers over 1200 questions in total. A portion of these are available for free practice, with the full question bank unlockable through subscription.
Yes, some subscription plans for CDL Prep include a free trial period, such as a 3-day free trial for certain unlock options.
Subscription options vary, with weekly plans starting around $3.99 and monthly plans around $12.99, offering access to more questions and practice tests.
Yes, CDL Prep can be referred to for CDL tests in any of the 50 US states, as it aligns with official DMV publications.
Yes, CDL Prep contains advertisements. It is a free app supported by ads, with options to unlock more content through in-app purchases.
When you answer a question incorrectly, the app provides detailed explanations immediately, clarifying why your answer was wrong and helping you understand and remember the correct information.
The app was last updated on February 24, 2026, indicating a recent update. New questions are added to keep practice tests fresh and engaging.
CDL Prep Test & CDL Pass
(329)
