Free CDL Practice Test 2026
25,000+ practice questions covering General Knowledge, Air Brakes, Hazmat, and every endorsement — for all 50 states. Updated for 2026 FMCSA regulations.
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What to Expect on Your CDL Written Test
The CDL knowledge test is your first major step toward a commercial driving career. Every state administers these tests through their DMV, and the questions come directly from the CDL handbook. The test is federally standardized across all 50 states — what you study for one state applies everywhere.
The General Knowledge test is required for every CDL applicant. It covers safe driving practices, vehicle systems, cargo securement, hours of service, and federal regulations. If you're applying for a Class A CDL, you'll also take the Combination Vehicles test. If your vehicle has air brakes, add the Air Brakes test. Each endorsement — Hazmat, Tanker, Passenger, School Bus, Doubles/Triples — has its own written test.
Most states require an 80% passing score on each section. Our practice tests mirror the real DMV format so you walk in knowing exactly what to expect. We offer two study modes: DMV Simulator (timed, no hints — just like test day) and Learning Mode (untimed, instant feedback after every question).
CDL Practice Test Categories
General Knowledge
Core CDL knowledge — required for all drivers
Air Brakes
Air brake system operation, inspection, and safety
Combination Vehicles
Coupling, uncoupling, and trailer handling
Hazmat
Hazardous materials transportation and safety
Tanker Vehicles
Liquid cargo handling and surge management
Passenger
Bus and passenger vehicle operation
School Bus
Student transportation and safety requirements
Doubles & Triples
Multiple trailer combinations
Pre-Trip Inspection
Complete 7-step vehicle inspection process
Texas also includes a 10th state-specific Special Requirements test.
How to Get the Most from CDL Practice Tests
Start with Learning Mode
Begin each test category in Learning Mode. Answer questions without time pressure, read every explanation, and take notes on concepts you don't fully understand. This builds foundational knowledge.
Read the CDL Handbook
Download your state's CDL handbook from our free handbook library. The handbook is the source material for every test question. Use it to fill in knowledge gaps your practice test results reveal.
Switch to DMV Simulator
Once you're consistently scoring above 80% in Learning Mode, switch to DMV Simulator. The timed format builds test-day confidence and helps you manage time pressure.
Track Your Scores
Create a free account to save your scores and track improvement over time. Focus extra practice on categories where your scores are weakest.
Complete Your ELDT Training
If you're applying for your first CDL, you need ELDT theory training before your skills test. Our free online ELDT courses pair perfectly with practice test prep — study both together.
CDL Practice Tests by State
Select your state for state-specific CDL practice tests with local handbook downloads:
Practice Tests + ELDT Training = Pass Your CDL Faster
If you're applying for your first CDL, you need ELDT theory training before your skills test. Complete it for free while you practice. Both together give you the best preparation — the knowledge you need, tested the way the DMV tests it.
Start Free ELDT TrainingLast updated: May 13, 2026