CDL Class A Practice Test

Pass the CDL Class A knowledge exam with 250+ questions covering general knowledge, air brakes, combination vehicles, and hazmat.

Study smarter for the US Commercial Driver's License (CDL) Class A knowledge exam. This app gives you original practice questions built from the publicly available AAMVA model CDL manual and FMCSA rules that every state follows, with a clear explanation for every answer.

WHAT YOU GET

• General Knowledge: vehicle inspection, basic control and shifting, space and speed management, hazardous conditions, emergencies, cargo, alcohol and fatigue rules.
• Air Brakes: system parts, dual air systems, inspecting and using air brakes.
• Combination Vehicles: coupling and uncoupling, inspection, rollover and trailer safety.
• Three difficulty levels and a clear explanation citing the rule for every question.
• Timed practice tests that mirror real exam length and pass mark.
• Progress saved on your device — no sign-up, works offline.

ORIGINAL & SAFE Every question is written for this app from the public CDL manual and federal rules. Nothing is copied from any real state exam, test pool or third-party question bank.

FREE TO START Practice free, then a single one-time purchase unlocks the full question bank and unlimited timed tests — no ads, no subscription, no account.

NOTE Unofficial study and practice app. Not affiliated with, endorsed by, or sponsored by FMCSA, AAMVA, any state DMV or any government agency. For learning only; does not guarantee passing any CDL exam.