CDL RoadMaster Permit Prep

Study smarter for your CDL permit with 180+ practice questions, 50 lessons, timed mock exams, road-sign training, and progress tracking. Pass with confidence.

CDL RoadMaster Permit Prep is the complete study companion for your Commercial Driver's License (CDL) permit and endorsement knowledge tests. Whether you're starting truck-driving school, switching careers, or retaking the test, RoadMaster helps you study smarter and walk in ready.

Everything you need to prepare — all in one app, and it works fully offline.

STRUCTURED LESSONS • 50 clear, in-depth lessons across every CDL topic • Key facts, common mistakes, warnings, and memory tips • Optional audio narration so you can study on the go

REALISTIC PRACTICE QUESTIONS • 180+ original questions with detailed explanations • Learn why each answer is right — and why the others are wrong • Quick Practice, Standard, Topic, and fully Custom sessions • Weak-Area Practice that automatically targets your lowest scores • Speed Rounds and a fresh Daily Challenge every day

TIMED MOCK EXAMS • Full-length, timed exams that mirror the real test • General Knowledge, Air Brakes, Combination Vehicles, and endorsement exams • Instant scoring with a category-by-category breakdown • Flag questions for review and get a recommended next step

SPECIALIZED TRAINERS • Road-Sign Trainer with a full sign library and four practice modes • Hazard-Perception scenarios that teach the safest action • Interactive Pre-Trip Inspection walkthrough of every component

TRACK YOUR PROGRESS • Exam-readiness estimate so you know when you're ready • XP and Driver Levels from Rookie Driver to RoadMaster • Study streaks, daily goals, and 30 achievements to earn • Personal records and detailed charts of your accuracy over time • A Mistake Notebook that collects every question you miss

ENDORSEMENT PREP INCLUDED • Passenger (P), School Bus (S), Tank (N), Hazardous Materials (H), and Doubles/Triples (T)

BUILT FOR ADULT LEARNERS • Clean, professional, distraction-free design • Full support for Dark Mode, Dynamic Type, and VoiceOver • Works 100% offline — study anywhere, no account required

FREE TO START Study for free with introductory lessons, daily practice, a starter mock exam, and progress tracking. Unlock everything — the complete question bank, all lessons and endorsements, unlimited mock exams, audio study mode, and an ad-free experience — with a single one-time purchase. No subscription.

IMPORTANT This app is an independent educational study tool. It is not affiliated with or endorsed by the FMCSA, any DMV, any state licensing agency, or any official CDL testing provider. Test requirements and regulations may change. Always consult the latest official CDL manual for your state.

Start your journey to a CDL today with RoadMaster.