CDL Prep: Permit Practice
Class A, B, C & HazMat Exam
About
Prepare for your Commercial Driver's License (CDL) permit tests with over 900 practice questions and detailed explanations. The app offers timed exams, mistake review, and state-specific handbooks, with translation support for multiple languages.
What's New in CDL Prep
1.2.0
October 12, 2026
Your study journey has a new look. - A refreshed, road-inspired design with clearer navigation. - A personalized study route based on your vehicle type and selected endorsements. - Topic-by-topic progress tracking to help you decide what to practice next. - Focused, timed exam simulations for individual CDL topics. - A simpler setup, with vehicle and state preferences easy to update in Settings. Keep moving forward, one topic at a time.
MoreSubscriptions & In-App Purchases
CDL Pro
CDL Pro Monthly
Developer apps
FAQ
What CDL classes does CDL Prep cover?
CDL Prep covers Class A, B, and C permits, along with endorsements such as HazMat (H), Tanker Vehicles (N), Doubles & Triples (T), Passenger Vehicles (P), and School Bus (S). It also includes General Knowledge and Air Brakes topics.
How many practice questions are available in CDL Prep?
The app offers a total of 907 practice questions spread across 32 tests. With the free version, you get 9 practice tests (269 questions), while the CDL Pro subscription unlocks all 32 practice tests.
Does CDL Prep offer timed practice exams?
Yes, CDL Prep includes timed practice exams designed to simulate the real test experience. These exams consist of 25 questions to be completed within 25 minutes, requiring an 80% pass rate.
Can I study for my CDL permit offline with CDL Prep?
Yes, CDL Prep works offline. All practice questions and state handbooks are stored on your phone, so you can study without an internet connection. No account is needed to use this feature.
What languages are supported for translation in CDL Prep?
While questions remain in English, CDL Prep offers translation support for explanations and answers in Spanish, Portuguese, Russian, Ukrainian, Polish, Turkish, Vietnamese, Chinese, Arabic, French, German, and Italian. The app's interface is also available in Spanish.
How does the mistake review feature work in CDL Prep?
The mistake review feature ensures you master difficult concepts by bringing back the questions you answered incorrectly. These missed questions will reappear until you demonstrate understanding, helping to solidify your knowledge.
What are the subscription details for CDL Pro?
CDL Pro is an optional auto-renewing subscription priced at $9.99 per month. It unlocks all 32 practice tests and increases the translation limit. You can manage or cancel your subscription within your App Store account settings at least 24 hours before the current period ends.
Is CDL Prep affiliated with any government agencies?
No, CDL Prep is an independent study app and is not affiliated with, endorsed by, or representing the FMCSA, any state DMV, or any other government agency. Practice materials are based on publicly available government information.
