- 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 Indiana CDL Air Brakes Test 2025
Part of mandatory Entry-Level Driver Training Course Based on 2025 IN commercial driver's license manualAvailable in EN, ES
30questions
6mistakes allowed
80%passing score
Your knowledge of air brakes will be tested today, to prepare you for the Indiana BMV air brakes exam and to help you become a safer driver. You will be answering 30 multiple-choice questions, based on the knowledge you’ve gained from the Indiana CDL Manual. Along with each question, you’ll find a hint and an explanation. You should read each, so that you will be able to answer further questions about these topics on the real BMV exam. It is recommended that you carefully read each question’s explanation to gain some further insight, to receive a higher score on the real CDL air brake exam. Practice as often as you need to, and good luck on your exam!
Perfect for
- First-time IN CDL and CLP applicants
- CDL holders adding endorsements
- IN 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 Indiana. Pass Guarantee
Become a member to unlock our extensive library of 1,500+ exam-like questions and get your Indiana ELDT certification online. Official FMCSA-approved national Entry-Level Driver Training provider.
Pass the first time, guaranteed
List of questions (classic view)
- How would you check your truck's slack adjusters?
- At what measurement is the safety valve USUALLY set to open?
- How can you tell if your vehicle is equipped with an anti-lock braking system (ABS)?
- How do brakes work on a long, steep downgrade?
- Slack adjusters are
- Spring brakes are
- After the initial drop, the maximum acceptable leakage rates per minute are
- The purpose of a supply pressure gauge is
- The tractor protection valve
- What is the best way to test if your vehicle's spring brakes come on automatically?
- What is the best way to test your vehicle's low air pressure warning signal?
- When should you drain your air tanks?
- When should you use the parking brake?
- Under which conditions are front wheel brakes good?
- Which of the following can cause brakes to fail or fade?
- If the air tanks are not drained,
- Which of the following is NOT part of the air brake system?
- Which of the following is NOT part of the braking process when driving a tractor-trailer combination vehicle with an anti-lock braking system (ABS)?
- Which of the following is NOT part of the drum brake?
- Which of the following are true about a dual air brake system?
- Which of the following will be true about your brake function if your anti-lock braking system (ABS) fails?
- Which of the following should you do before leaving your vehicle unattended?
- Which vehicles must have low air pressure warning signals?
- An anti-lock braking system (ABS)
- Why must you study air brakes in the state of Indiana?
- 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
IN 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?