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…