- Alabama: Test 1 / Test 2
- Alaska: Test 1 / Test 2
- Arizona: Test 1 / Test 2
- Arkansas: Test 1 / Test 2
- California: Test 1 / Test 2
- Colorado: Test 1 / Test 2
- Connecticut: Test 1 / Test 2
- Delaware: Test 1 / Test 2
- District of Columbia: Test 1 / Test 2
- Florida: Test 1 / Test 2
- Georgia: Test 1 / Test 2
- Hawaii: Test 1 / Test 2
- Idaho: Test 1 / Test 2
- Illinois: Test 1 / Test 2
- Indiana: Test 1 / Test 2
- Iowa: Test 1 / Test 2
- Kansas: Test 1 / Test 2
- Kentucky: Test 1 / Test 2
- Louisiana: Test 1 / Test 2
- Maine: Test 1 / Test 2
- Maryland: Test 1 / Test 2
- Massachusetts: Test 1 / Test 2
- Michigan: Test 1 / Test 2
- Minnesota: Test 1 / Test 2
- Mississippi: Test 1 / Test 2
- Missouri: Test 1 / Test 2
- Montana: Test 1 / Test 2
- Nebraska: Test 1 / Test 2
- Nevada: Test 1 / Test 2
- New Hampshire: Test 1 / Test 2
- New Jersey: Test 1 / Test 2
- New Mexico: Test 1 / Test 2
- New York: Test 1 / Test 2
- North Carolina: Test 1 / Test 2
- North Dakota: Test 1 / Test 2
- Ohio: Test 1 / Test 2
- Oklahoma: Test 1 / Test 2
- Oregon: Test 1 / Test 2
- Pennsylvania: Test 1 / Test 2
- Rhode Island: Test 1 / Test 2
- South Carolina: Test 1 / Test 2
- South Dakota: Test 1 / Test 2
- Tennessee: Test 1 / Test 2
- Texas: Test 1 / Test 2
- Utah: Test 1 / Test 2
- Vermont: Test 1 / Test 2
- Virginia: Test 1 / Test 2
- Washington: Test 1 / Test 2
- West Virginia: Test 1 / Test 2
- Wisconsin: Test 1 / Test 2
- Wyoming: Test 1 / Test 2
Free Tennessee CDL Air Brakes Test 2025
Part of mandatory Entry-Level Driver Training Course Based on 2025 TN commercial driver's license manualAvailable in EN, ES
30questions
6mistakes allowed
80%passing score
It isn’t difficult to pass the Tennessee CDL air brake exam as long as you practice early and often, which is where practice exams enter the picture. They can help you prepare for your real exam by making you comfortable with the subject matter, the exam format, and even allowing you to time yourself so that you get used to “test day” pressure. The practice exam features 30 questions written with information and questions directly from the Tennessee Commercial Driver License Manual. Each question has a hint that you can use if you need it. Explanations are also provided. You should read each of them as they can provide helpful information for the future, that could pop up on your real CDL air brake exam. Practice until you achieve a score that you feel confident in, and good luck on the road to safer air brake driving in Tennessee!
Perfect for
- First-time TN CDL and CLP applicants
- CDL holders adding endorsements
- TN CDL renewal applicants
What to expect on the actual exam
| How many questions | 25 |
|---|---|
| How many correct answers to pass | 20 |
| Passing score | 80% |
Unlock all 1,500+ exam-like questions for Tennessee. Pass Guarantee
Become a member to unlock our extensive library of 1,500+ exam-like questions and get your Tennessee ELDT certification online. Official FMCSA-approved national Entry-Level Driver Training provider.
Pass the first time, guaranteed
List of questions (classic view)
- How can you tell if your vehicle is equipped with an antilock braking system (ABS)?
- Which of the following is NOT part of the braking process when you're driving a tractor-trailer combination vehicle with an antilock braking system (ABS)?
- Which of the following can cause brakes to fade or fail?
- Which of the following should you do before leaving your vehicle unattended?
- If the air tanks are not drained,
- Why must you pass a knowledge test on air brakes?
- When should you drain your air tanks?
- Under which conditions are front wheel brakes good?
- Spring brakes are
- The tractor protection valve
- Which of the following will be true about your brake function if your antilock braking system (ABS) fails?
- How would you check your truck's slack adjusters?
- After the initial drop, the maximum acceptable leakage rates per minute are
- Which vehicles must have low air pressure warning signals?
- An antilock braking system (ABS)
- Slack adjusters are
- At what measurement is the safety valve USUALLY set to open?
- The purpose of a supply pressure gauge is
- What is the best way to test your vehicle's low air pressure warning signal?
- What is the best way to test if your vehicle's spring brakes come on automatically?
- How do brakes work on a long, steep downgrade?
- When should you use the parking brake?
- Which of the following is NOT part of the drum brake?
- Which of the following is NOT part of the air brake system?
- Which of the following are true about a dual air brake system?
- The low air pressure warning signal will come on before the pressure in the air tanks falls below
- A low pressure warning signal is required on
- All vehicles equipped with air brakes have
- With air brake-equipped vehicles, the parking brakes should be used
- The use of air brakes on a downgrade is only a supplement to the
More resources
You may also like
TN CDL Practice Test App
Download our free iOS or Android app and practice for your driving test offline or on the go.
10 Things You Should Do Before Your Driving Knowledge Exam (PDF)
Many people do their best but still get to the DMV overconfident and underprepared because they fail to do some of the simple...
Open PDF
Are you in another state?