CDL Master: Practice Test 2026

Ace your Commercial Driver's License exam with CDL Master — the smart, no-nonsense study app built for aspiring truck drivers. With 435 real CDL practice questions aligned to 2026 FMCSA standards,
timed exam simulations, and a built-in spaced repetition system, you'll walk into your test day fully prepared.

WHAT'S INSIDE

• 435 CDL Practice Questions — Covering General Knowledge, Air Brakes, Combination Vehicles, and Hazardous Materials, each with detailed explanations so you understand the "why" behind every answer.

• Realistic Exam Simulations — Practice under real test conditions with official question counts, time limits, and an 80% passing threshold. Know exactly what to expect on exam day.

• Smart Review (Spaced Repetition) — Our SM-2 algorithm tracks what you know and what you don't. It resurfaces the questions you're most likely to forget, so you study smarter, not harder.

• Review Your Mistakes — Instantly revisit every question you got wrong. Turn weak spots into strengths before test day.

• Progress Dashboard — Track your accuracy, study streaks, pass confidence score, and category-by-category performance at a glance.

4 CDL TEST CATEGORIES

1. General Knowledge — 241 questions covering rules of the road, vehicle inspection, basic control, and safe driving.
2. Air Brakes — 72 questions on air brake systems, components, inspection, and emergency procedures.
3. Combination Vehicles — 69 questions on coupling/uncoupling, rollover prevention, and combination vehicle handling.
4. Hazardous Materials — 53 questions on HazMat placarding, loading, emergencies, and compliance.

WHY CDL MASTER?

Updated for 2026 — Questions aligned with current FMCSA regulations.
Study Offline — All content is available without an internet connection.
Dark & Light Mode — Study comfortably day or night.
No Ads — Zero distractions. Just you and your CDL prep.
Daily Streak Tracking — Build a study habit and stay consistent.

FREE TO START

Get started with 10 free practice questions per day in General Knowledge. Upgrade to unlock all 435 questions, all 4 categories, exam simulations, and unlimited access.

Whether you're studying for your Class A, Class B, or Class C CDL, this app gives you the tools to pass your written knowledge test with confidence.

Download CDL Master today and start your trucking career.

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