CDL - Practice Test 2026

Pass your CDL knowledge test the first time. CDL Prep is built from the official CDL manual — every question written to exam style, every answer explained, every fact cited back to the manual section it comes from. WHAT YOU GET • 886 practice questions across all 8 sections: General Knowledge, Air Brakes, Combination Vehicles, Hazmat, Tanker, Doubles/Triples, Passenger, and School Bus • Free 20-question diagnostic that finds your weak spots in minutes • Exam simulator with real test conditions and an optional timer • Smart review: the app tracks what you miss and brings it back until you know it — flag any question to study it later • Pre-trip inspection trainer: the full Class A checklist with word-for-word "point and say" scripts, plus a recite mode that drills it into memory • Study notes: the manual's high-yield facts condensed into quick reading for every section • Exam readiness score so you know when you're actually ready to book the test • Daily streaks to keep you consistent • Works 100% offline — study anywhere, no signal needed EVERY STATE The CDL knowledge test follows the same federal standard (49 CFR 383) in all 50 states. Pick your state and CDL Prep personalizes the app and links you to your state's DMV. FREE TO START The diagnostic, study notes, smart review, and pre-trip walkthrough are free, plus 2 practice tests per core section. Go Premium for unlimited tests, all 5 endorsements, and the pre-trip recite mode. Download CDL Prep and pass with confidence.