Free Tennessee CDL Practice Tests — Your Complete Study Guide
Pass your Tennessee CDL permit exam with 80%+ on the first try
Updated: June 2026
What You Need to Study
General Knowledge
The foundation of your CDL exam. Covers traffic laws, safe driving techniques, vehicle inspection procedures, cargo handling, and federal regulations every commercial driver must understand.
Combination Vehicles
Essential for driving tractor-trailers. Covers coupling and uncoupling procedures, rollover prevention, inspecting combination vehicles, and safely maneuvering with attached trailers.
Air Brakes
Required for any vehicle equipped with air brakes. Covers how air brake systems work, dual air brake systems, inspecting air brakes, and using them safely in all conditions.
Endorsement Tests
HazMat
Required for transporting hazardous materials. Covers placarding, labeling, loading procedures, emergency response, and compliance with federal hazmat regulations.
Tanker
Required for driving tank vehicles used to transport liquids or gases in bulk. Covers safe loading, unloading, and driving techniques specific to tanker operations.
Doubles & Triples
Required for pulling double or triple trailers. Covers coupling and uncoupling multiple trailers, safe driving practices, and inspection procedures for multi-trailer rigs.
Passenger
Required for operating vehicles designed to transport 16 or more passengers. Covers passenger safety, loading, emergency exits, and pre-trip inspection requirements.
Free Tennessee CDL Practice Tests — Your Complete Study Guide
What should you do when merging?
- Merge at a much lower speed than the flow of traffic.
- Use your mirrors to make sure the gap in traffic is large enough for you to enter safely.
- Merge without signaling.
Documents related to hazardous materials transportation must be stored ___.
- In the pouch of the driver door.
- Attached to the sun visor.
- In a box on the trailer.
Which of these statements about driving through a tunnel is correct?
- Keep windows open for fresh air.
- Turn off all lights inside the truck.
- There may be strong winds when exiting.
Among these vehicles, which is more likely to experience off-tracking during turns?
- Tractor with 45-feet trailer.
- 28-feet box truck
- 45-feet straight truck
Under what circumstances should you sound your horn?
- If it helps to avoid a crash.
- To let others know you are running late.
- To say hello to a friend on the sidewalk.
Identify the incorrect statement regarding alcohol consumption.
- A drinker can control how fast his or her body absorbs alcohol.
- Alcohol goes directly from the stomach to the blood stream.
- BAC is determined by how fast you drink; how much you drink and how much you eat.
If your vehicle is missing ____ or more leaves from any leaf spring, it won't be allowed to be used.
- 1/3
- 1/4
- 1/2
Select the correct statement regarding the transportation of hazardous materials.
- Any truck carrying any amount of hazardous materials must have placards.
- Hazardous materials can be disposed of in regular trash bins if the containers are sealed.
- All hazardous materials present health and safety danger.
To figure out how much alcohol is in someone's blood (BAC), you need to know:
- Their height.
- The time of day they drink alcohol
- Their weight.
What is the right way to hold a steering wheel?
- With one hand on the top of the wheel and the other on your lap.
- With your knees, while using your hands to adjust the radio.
- With both hands, on opposite sides of the wheel.
What Are You Preparing For?
Select one or more options so we can show you exactly which tests you need to take.
What You Need to Study
General Knowledge
16 sections · 800 questions
The foundation of your CDL exam. Covers traffic laws, safe driving techniques, vehicle inspection procedures, cargo handling, and federal regulations every commercial driver must understand.
Combination Vehicles
9 sections · 180 questions
Essential for driving tractor-trailers. Covers coupling and uncoupling procedures, rollover prevention, inspecting combination vehicles, and safely maneuvering with attached trailers.
Air Brakes
6 sections · 150 questions
Required for any vehicle equipped with air brakes. Covers how air brake systems work, dual air brake systems, inspecting air brakes, and using them safely in all conditions.
Endorsement Tests
Additional endorsements you may need depending on the type of vehicle or cargo you plan to operate.
HazMat
9 sections · 202 questions
Required for transporting hazardous materials. Covers placarding, labeling, loading procedures, emergency response, and compliance with federal hazmat regulations.
Tanker
6 sections · 133 questions
Required for driving tank vehicles used to transport liquids or gases in bulk. Covers safe loading, unloading, and driving techniques specific to tanker operations.
Doubles & Triples
7 sections · 144 questions
Required for pulling double or triple trailers. Covers coupling and uncoupling multiple trailers, safe driving practices, and inspection procedures for multi-trailer rigs.
Passenger
6 sections · 123 questions
Required for operating vehicles designed to transport 16 or more passengers. Covers passenger safety, loading, emergency exits, and pre-trip inspection requirements.
Your Path to a Commercial Driver's License
To get a CDL, you must first study for and pass the permit exam at the DMV. After you receive your permit, you can take commercial vehicle driving classes and complete the required training. The final step is passing the official driving exam to earn your CDL. Our practice tests help you prepare for the DMV permit exam with real-style questions, and we also provide extra study materials and helpful resources to guide you through the process.
To obtain a CDL in Tennessee, you must pass three written permit tests — General Knowledge, Combination Vehicles, and Air Brakes — at the Tennessee Department of Motor Vehicles. Similar to a regular driver's license permit exam, these are timed, multiple-choice tests based on the official Tennessee CDL handbook.
All of our practice material is built from the official Tennessee CDL handbook and federal resources, and curated by professionals with over 10 years of experience in the commercial transportation industry. Studying with practice tests that mirror the real exam format is one of the most effective ways to pass on your first try.
On this page you'll find free practice tests for all three sections. For the full question bank and additional study features, download the CDL Help app.
Tennessee CDL Knowledge Test: Format & Requirements
The CDL knowledge (written) test follows the same federal standards in Tennessee as nationwide. Here's what to expect.
Questions by test
Passing score, question counts, and test format are federal standards (FMCSA, 49 CFR Part 383). Always confirm current details with your state's official CDL handbook.
Tennessee CDL Fees & Licensing
State-charged fees as of June 2026. Amounts change — confirm current fees with the official agency.
CDL Requirements in Tennessee
- Must be at least 18 years old to apply for a CDL in Tennessee.
- Drivers under 21 are restricted to operate commercial vehicles only within Tennessee (intrastate).
- Must be at least 21 years old to operate a commercial motor vehicle in interstate commerce or to transport hazardous materials.
- Must provide proof of U.S. citizenship or lawful permanent resident status. Tennessee does not accept I-94 work authorizations from non-citizens.
- Must pass a vision test at a Full-Service Driver Services Center.
- Must meet medical certification requirements and maintain valid medical certification on file.
- Must pass all applicable knowledge tests: General Knowledge, plus endorsement-specific exams (Air Brakes, Combination Vehicles, Tanker, etc.) at a Full-Service Driver Services Center.
- All new applicants must successfully complete Entry Level Driver Training (ELDT) by a registered Training Provider listed on the FMCSA Training Provider Registry.
- Must obtain a Commercial Learner's Permit (CLP) and hold it for at least 14 days before taking the skills test.
- Must pass the CDL skills test: pre-trip vehicle inspection, basic vehicle control, and road skills test.
- Endorsements available: Hazardous Materials (H), Cargo Tanker (N), Passenger (P), School Bus (S), Multiple-Trailer (T), and Haz Mat & Tanker combined (X).
- CDL classes: Class A (combination vehicles 26,001+ lbs GCWR), Class B (single vehicle 26,001+ lbs or towing up to 10,000 lbs), Class C (vehicles designed for 15+ passengers or hazardous materials).
- Special restriction: Code 24 Farm Vehicle CDL allows farm employees to operate within 150 miles of their employer, valid for a maximum of 180 consecutive days within 12 months.
Official Tennessee CDL Handbook
The official Tennessee Commercial Driver License Manual covers every topic tested on the state's CDL knowledge exam — but its dense, reference-style format makes it difficult for self-study. A more effective preparation tool is our set of General Knowledge practice tests. Our free Tennessee CDL permit practice test is structured to closely match the format and content of the official exam and is fully updated as of February 2026. Each test includes 20 questions covering critical topics such as vehicle inspection, safe driving techniques, air brakes, cargo securement, driving emergencies, hazardous conditions, and Tennessee-specific commercial driving regulations. Unlike the official test, every practice question comes with a helpful hint and a detailed explanation of the correct answer — so you learn from every question, not just the ones you get right.
- Complete CDL regulations and Tennessee-specific requirements
- Safe driving techniques, vehicle inspection, and cargo handling
- All endorsement categories and testing requirements
CDL Practice Tests in Nearby States
Testing near Tennessee? Practice for a neighboring state's CDL exam too.
Non-Domiciled CDL Information
Important information about non-domiciled commercial driver's licenses in Tennessee.
Federal regulations on non-domiciled CDLs are changing rapidly. The information below reflects the latest known state actions.
Tennessee is one of states that does not issue non-domiciled commercial driver's licenses. The state requires proof of U.S. citizenship or lawful permanent resident status for all CDL applicants and does not accept I-94 work authorizations from non-citizens.
While Tennessee does not issue non-domiciled CDLs, the FMCSA final rule published on February 13, 2026 (effective March 16, 2026) applies nationwide — limiting eligibility for non-domiciled CLPs and CDLs to foreign-domiciled individuals holding H-2A, H-2B, or E-2 visa statuses. This rule aligns the issuance of non-domiciled CDLs with FMCSA's statutory mandate to ensure the fitness of all CMV drivers, restoring the integrity of the CDL system and enhancing public safety.[FMCSA Final Rule]
English Language Proficiency (ELP)
Federal ELP enforcement applies to all CDL holders nationwide.
Federal ELP enforcement applies to all CDL holders nationwide. Here is how it is enforced in Tennessee.
Tennessee does not currently administer a separate state-level English Language Proficiency (ELP) test for CDL applicants. However, all Tennessee CDL holders are subject to federal ELP enforcement, which took effect on June 25, 2025. Under FMCSA guidance, all roadside inspections must begin in English, and if a driver appears unable to understand or respond appropriately, the officer proceeds with a formal two-step English Proficiency Assessment — a conversational interview in English (no interpreters, translation apps, or other language facilitation tools are permitted), followed by a test on reading and interpreting standard U.S. traffic signs. Drivers who fail either step face citation and immediate out-of-service status under CVSA North American Standard Out-of-Service Criteria.