CDL Exam: Practice & Prep
Class A B C & Endorsement Exam
$4.99 · Designed for iPad. Not verified for macOS.
New: 600+ practice questions, diagram-based scenarios, and timed full exams across all CDL classes and endorsements. Pass the written test with 80%+ confidence.
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.
Ratings & Reviews
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The developer, Yuhsiu Lai, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
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Information
- Seller
- Yuhsiu Lai
- Size
- 4.8 MB
- Category
- Education
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 iTech Tools
