Passing the CDL exam is your gateway to a rewarding career in the transportation industry. Our comprehensive guide and free practice tests cover essential topics for the Commercial Driver's License, including General Knowledge, Air Brakes, and specialized endorsements.
Whether you are aiming for a Class A CDL or Class B CDL, preparing with our CDL practice test questions is the most effective way to ensure success. Start your journey to becoming a professional CDL driver today with our expert resources and updated exam materials.
Facts verified Oct 18, 2026 against Federal Motor Carrier Safety Administration (FMCSA), U.S. DOT; tests administered by each state driver licensing agency. Dates that have passed are removed automatically.
| Item | Detail | Official source |
|---|---|---|
| Passing score | 80% on each knowledge test | ecfr.gov |
| Exam fee (Hazmat endorsement (TSA threat assessment)) | $85.25 | tsa.gov |
| Exam fee (Hazmat endorsement, TWIC holder) | $41.00 reduced rate | tsa.gov |
| Retake policy | Retake must use a different test version | ecfr.gov |
| Validity (Commercial learner's permit) | Max 1 year from initial issuance without retesting | ecfr.gov |
| Delivery | Written, verbal or computer; foreign language allowed, no interpreter | ecfr.gov |
| Eligibility (Commercial learner's permit) | Age 18+; 14-day wait before the skills test | ecfr.gov |
Facts verified Oct 18, 2026 against Federal Motor Carrier Safety Administration (FMCSA), U.S. DOT; tests administered by each state driver licensing agency. Dates that have passed are removed automatically.
Note: The exact number of questions and fees for the CDL license may vary slightly by state. Always verify with your local DMV for specific CDL class cost and testing requirements.
Quick review for key Commercial Driver's License concepts
Our CDL study guide breaks down everything you need to know about the CDL license process. From registration to salary expectations, explore the tabs below for detailed information on how to become a professional driver.
Estimated score calculation
Required to Pass: ~70% (Estimated)
Your Score: 35 correct ✓ PASS
Many trucking companies offer paid CDL training or tuition reimbursement in exchange for a work commitment. Look for "company-sponsored CDL programs" to lower your CDL course cost. Practice with the free CDL practice test on PracticeTestGeeks (850+ questions with answer explanations).
Interactive CDL resources on PracticeTestGeeks, free to start:
Prepare for the CDL - Commercial Driver's License exam with our free practice test modules. Each quiz covers key topics to help you pass on your first try.
Maintaining your CDL license requires periodic renewal and medical certification updates.
Keep your CDL medical card current. Driving with an expired medical certificate can lead to the downgrade of your CDL license to a non-commercial status.
If you are preparing for a career in driving, you may also find these related practice tests helpful:
Prepare for the DMV - Department of Motor Vehicles — the Department of Motor Vehicles written knowledge test for obtaining a US driving permit or license.
Prepare for the G1 - Ontario G1 Driver's License — the Ontario G1 knowledge test for new drivers in Ontario, covering road signs and traffic rules.
Prepare for the DVSA - UK Driving Theory Test — the UK DVSA driving theory test covering highway code, hazard perception, and road safety.
Prepare for the DKT - Driver Knowledge Test — the Australian Driver Knowledge Test for learner drivers in New South Wales.
Prepare for the UK Car Theory Test — the UK car driving theory test covering road signs, rules, and hazard perception.
If you want more targeted practice, the cdl questions and answers pdf page covers the same material with additional questions and explanations.
If you want more targeted practice, the air brakes practice test page covers the same material with additional questions and explanations.
| Pros | Cons |
|---|---|
| cdl — cDL exam preparation strengthens your knowledge across all domains | Exam anxiety can affect performance — practice tests help reduce it |
| Passing the exam proves competency to employers and clients | Registration fees are non-refundable if you miss your test date |
| Study materials and practice tests are widely available | Limited retake opportunities may apply with waiting periods |
| Exam-based credentials are portable across states and employers | Exam content updates periodically — use current study materials |
| Clear exam objectives help focus your study plan effectively | Testing center availability may require advance scheduling |
Try these questions from our free CDL practice tests. The correct answer and an explanation follow each question.
During the CDL skills test for a Class A vehicle, which of the following is NOT one of the three required test components?
Answer: C. Emergency brake pressure test
The three mandatory components of the CDL skills test are the pre-trip inspection, basic vehicle controls (backing, turning, coupling/uncoupling), and the on-road driving test. An emergency brake pressure test is not a standalone required component.
For your pre-trip vehicle inspection test, your entry doors should be in what condition?
Answer: D. All of the listed answers.
For your pre-trip vehicle inspection test, the entry doors must be thoroughly checked to ensure they are safe and functional. This means they should be undamaged, operate smoothly from both the inside and outside, and be in overall working condition. Proper door function is essential for driver and passenger safety, as well as for securing cargo.
On the CDL pre-trip vehicle inspection test, you can expect to ________.
Answer: B. To be asked to explain to the examiner what parts of your vehicle you would inspect and why.
The CDL pre-trip vehicle inspection test assesses a driver's ability to identify and explain critical vehicle components and their proper functioning. You are expected to demonstrate your knowledge by explaining what parts you would inspect and why they are important for safe operation. This ensures you can detect potential mechanical issues before driving, which is crucial for commercial vehicle safety.
Which of the following is a necessary step to test your service brakes?
Answer: C. All of the listed answers.
Testing your service brakes involves several critical steps to ensure they are functioning correctly. You must first wait for normal air pressure to build up, then release the parking brake. Finally, move the vehicle forward slowly and apply the brakes to check for proper stopping action, ensuring the vehicle stops smoothly and in a straight line.
Disclaimer: This app is not affiliated with or endorsed by any state DMV or the FMCSA and is intended for educational and practice purposes only. Official CDL requirements and regulations may vary by state - always verify current information with your local DMV or authorized testing center.