CDL Exam: Practice & Prep Customer Service

1. CDL Exam: Practice & Prep Customer Service
2. CDL Exam: Practice & Prep App Comments & Reviews (2026)

Pass your Commercial Driver's License (CDL) written test the first time. CDL Exam is a complete study tool built around FMCSA and AAMVA standards — 600+ practice questions, diagram-based scenarios, timed full exams, and a searchable reference library, all in one focused app.
Whether you're chasing a Class A, B, or C license, adding a HazMat, Tanker, Passenger, School Bus, or Doubles/Triples endorsement, or just starting your CLP, CDL Exam walks you from your first study session to exam day.
WHAT YOU GET

600+ practice questions covering every CDL knowledge test
Class A · Class B · Class C — dedicated question filters per class
Endorsements: HazMat (H), Tanker (N), Passenger (P), School Bus (S), Doubles/Triples (T)
Air Brakes, Combination Vehicles, Pre-Trip Inspection
Progressive difficulty — easy → medium → hard
Detailed explanations citing the relevant 49 CFR rule or CDL manual section

REAL TEST FORMAT

Multiple-choice questions with four options each
80% passing threshold (FMCSA / AAMVA standard)
Timed Full Exams: 50-question practice or 100-question simulation
Diagram-based items for coupling, air brake systems, vehicle classes, placards, road signs, off-tracking, stopping distance, and more
Case-based scenarios drawn from real CDL manuals

SMART STUDY TOOLS

Flag difficult questions and jump around with the question navigator
Track performance per category — see which topics to focus on
Review your last 20 full-exam attempts
Quick reference tab with license classes, HOS rules, air brake pressures, placards, road sign shapes and colors, weight limits, and disqualification rules

BUILT FOR EVERY DEVICE

Universal app — iPhone and iPad, portrait and landscape
Two-column layouts on iPad and landscape phones make large question sets easier to scan
Clean, high-contrast night-ready design

COVERAGE HIGHLIGHTS

Vehicle classes, GVWR/GCWR thresholds, and permit limits
Coupling and uncoupling procedures, fifth wheel, pintle hook
Air brake components, leakage tests, low-air warning, stab braking
Pre-trip inspection — engine, chassis, brakes, coupling, lights, cargo
HazMat: 9 hazard classes, placarding, ERG, shipping papers, attendance, routing
Tanker: liquid surge, baffles, rollover prevention, DOT tank specs
Passenger buses: loading, RR crossings, emergency exits, evacuation
School buses: danger zones, red lights and stop arm, crossing gates, RR stop
Doubles/Triples: dolly coupling, crack-the-whip, off-tracking
Hours of Service (property and passenger carriers), ELDT, Clearinghouse

NO ACCOUNT REQUIRED
Your progress stays on your device. No subscriptions. No ads interrupting your study.
Built by driving professionals for driving professionals. Study hard, stay safe, and earn that CDL.

CDL Exam: Practice & Prep App Comments & Reviews