Welcome to CDL Practice Exam – CDL Practice Test!
CDL Test Overview
Commercial trucking is a fast-growing industry with strong demand for qualified drivers. However, operating a Commercial Motor Vehicle (CMV) requires more than just enthusiasm—it takes knowledge, skill, experience, and physical capability. To become a certified commercial driver, you must first earn your Commercial Driver’s License (CDL) by passing both a knowledge exam and a skills test.
While requirements can vary slightly by state, most CDL written exams require a minimum score of 80% to pass. Don’t risk walking out of the testing center disappointed—start your preparation today with our free CDL practice tests designed to help you succeed on the first try!
CDL Practice Test Questions
Earning your Commercial Driver’s License (CDL) is the key to launching a successful career in the trucking and transport industry. Don’t leave your future to chance—prepare with our comprehensive, free CDL practice tests designed to mirror the real exam and boost your confidence behind the wheel.
Our CDL practice tools give you a competitive edge with features like:
- ✅ Thousands of up-to-date CDL test questions covering General Knowledge, Air Brakes, HazMat, Combination Vehicles, and more
- 📱 Fully mobile-optimized – practice anytime, anywhere on any device
- 🔁 Unlimited test attempts – no restrictions, no stress
- ❌ Instant feedback on missed questions – learn from your mistakes and try again
- 🧪 Exam Mode Simulator – feel the pressure before test day with a realistic timed setup
- 📘 Clear and detailed explanations – understand why your answers are right or wrong
- 💯 Track your progress – see how you improve over time
- 💸 Completely free to use – no subscriptions, no hidden fees
Whether you’re aiming to drive locally, regionally, or across the country, preparation is everything. Start now with our free CDL practice tests and take the first step toward a rewarding career in commercial driving!
CDL Exam Structure
To earn your Commercial Driver’s License (CDL), you must pass a two-part exam process that tests both your knowledge and practical driving skills. Here’s a breakdown of the CDL exam structure:
🧠 1. Knowledge (Written) Test
This is a multiple-choice exam designed to assess your understanding of the rules, safety practices, and vehicle operation required to drive a Commercial Motor Vehicle (CMV).
Core Sections:
- General Knowledge (required for all CDL applicants)
- Air Brakes (if driving a vehicle with air brake systems)
- Combination Vehicles (for Class A licenses)
Optional Endorsement Tests:
- Hazardous Materials (HazMat)
- Tanker Vehicles
- Doubles/Triples
- School Bus (S)
- Passenger Transport (P)
📌 Passing score: Typically 80%
🕒 Time limit: Varies by section (usually 60–90 minutes total)
🚛 2. Skills (Road) Test
After passing the written test, you must demonstrate hands-on driving ability.
Skills Test Includes:
- Pre-trip inspection – Prove you can inspect your vehicle for safety issues
- Basic vehicle control – Perform maneuvers like backing up, turning, and parking
- On-road driving – Navigate real traffic scenarios (turns, stops, lane changes, etc.)
🕒 Time Required: About 1.5 to 2 hours
📍 Conducted by: State-certified testing centers
📝 CDL Test Requirements by Class
| CDL Class | Vehicle Type | Tests Required |
|---|---|---|
| Class A | Tractor-trailers, combo vehicles | General Knowledge, Combination, Air Brakes + Skills Test |
| Class B | Straight trucks, large buses | General Knowledge, Air Brakes (if applicable) + Skills Test |
| Class C | Small vehicles transporting HazMat or passengers | General Knowledge + Endorsement(s) + Skills Test |
🎯 Pro Tip:
Prepare for both parts of the exam using realistic CDL practice tests, especially for endorsements that require extra testing. Mastering the structure ahead of time reduces test anxiety and increases your chance of passing on the first attempt.
Need a study plan or checklist to guide your CDL prep? I can create one for you!
🚛 CDL Exam FAQs
1. What is a CDL?
A Commercial Driver’s License (CDL) is a special license required to operate large, heavy, or hazardous material-carrying vehicles such as trucks, buses, and tankers in the U.S.
2. What are the different CDL classes?
- Class A – For combination vehicles (e.g., tractor-trailers)
- Class B – For single vehicles (e.g., box trucks, city buses)
- Class C – For transporting passengers or hazardous materials (e.g., school buses, HazMat vehicles)
3. What tests are required to get a CDL?
- A written knowledge test (80% minimum score to pass)
- A skills test, including pre-trip inspection, basic control, and on-road driving
4. How many questions are on the CDL test?
The General Knowledge portion usually has 50 questions. Additional sections like Air Brakes or HazMat may add 20–30 questions each.
5. How do I prepare for the CDL test?
- Study your state’s CDL manual
- Use CDL practice tests to simulate the real exam
- Take endorsement-specific tests if needed (e.g., HazMat, Passenger)
6. How long does it take to get a CDL?
If you’re attending a full-time driving school, it typically takes 3–8 weeks. Self-study and testing timelines vary by state and your availability.
7. What’s the minimum age to get a CDL?
- 18 years old for intrastate driving
- 21 years old for interstate driving or transporting hazardous materials
8. Do I need a medical exam?
Yes. You must pass a DOT physical exam by a certified medical examiner to ensure you’re physically fit to operate a CMV.
9. How much does it cost to get a CDL?
Costs vary by state and training program. Expect to pay:
- $30–$100 for testing and license fees
- $2,000–$8,000 for CDL training school (if applicable)
10. Is the CDL test hard?
It depends on your preparation. Many find the test challenging without study, but practice tests and study guides significantly improve your chances of passing on the first try.