- 0 Incorrect (6 allowed to pass)
- 0 Correct
- Updated for February 2025
- Based on 2025 KS commercial driver's license manual
Free Kansas CDL Air Brakes Test 2025
Planning to drive commercial motor vehicles (CMVs) with air brakes? Our Kansas DMV CDL Air Brakes Practice Tests are designed to help you confidently prepare for your knowledge exam and pass on the first attempt. Failing the air brakes test in Kansas results in a one-day waiting period and a fee before you can retake it. If you don’t pass, your CDL will include the “L” restriction, preventing you from operating CMVs with air brakes. Air brakes are essential for safely navigating Kansas, especially in the Flint Hills region, where rolling hills, gradual slopes, and high winds demand precise control. Transportation routes such as I-70 (linking Kansas City, Topeka, and Salina), I-35, and Routes 54 and 81 are vital for agricultural and freight transport, and most semi-trucks and tractor-trailers rely on air brakes. Thus, restriction “L” would limit both your driving options and your access to many job opportunities.
Industries throughout the Sunflower State depend on drivers with air brake qualifications to run smoothly. Key industries include agriculture, manufacturing, and energy. Major companies requiring the air-brake qualification include Scoular and ADM Grain in the agriculture sector as well as XPO Logistics, Old Dominion Freight Line, and FedEx Freight in the logistics industry. Charter bus companies like Village Tours & Travel (Wichita), Arrow Stage Lines (Kansas City), and Prestige Bus Lines (Topeka) also rely on air brake-qualified drivers. Additionally, thousands of full-size school buses statewide are equipped with air brakes. The “L” restriction makes operating CMVs equipped with air brakes illegal, limiting your access to countless job opportunities.
Our CDL Air Brakes Practice Tests cover all essential knowledge for the official DMV Air Brakes knowledge test. This information will also prove valuable as you practice inspecting and operating CMVs to pass your skills test, which involves inspecting components, testing air pressure and leaks, and operating air brake-equipped vehicles. The written Air Brakes knowledge test features multiple-choice questions based on the state’s CDL manual (Kansas CDL Handbook 2025) and requires a score of at least 80% to pass.
Our Practice Tests are carefully designed to mimic the content and format of the official knowledge test while providing real-time feedback on all responses. This scientifically proven approach enhances material retention and ensures you’re fully prepared to pass the test and advance your career in commercial driving.
- Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
- Triple-checked for accuracy
What you need to know
What to expect on the actual KS DMV exam
questions
correct answers to pass
passing score
List of questions (classic view)
- How would you check your truck's slack adjusters?
- Under which conditions are front wheel brakes good?
- Which of the following can cause brakes to fail or fade?
- The tractor protection valve
- When should you use the parking brake?
- After the initial drop, the maximum acceptable leakage rates per minute are
- How do brakes work on a long, steep downgrade?
- Which vehicles must have low air pressure warning signals?
- If the air tanks are not drained,
- How can you tell if your vehicle is equipped with an anti-lock braking system (ABS)?
- 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 are true about a dual air brake system?
- Why must you study air brakes in the state of Kansas?
- Slack adjusters are
- Which of the following is NOT part of the drum brake?
- What is the best way to test if your vehicle's spring brakes come on automatically?
- Which of the following should you do before leaving your vehicle unattended?
- Spring brakes are
- When should you drain your air tanks?
- An anti-lock braking system (ABS)
- What is the best way to test your vehicle's low air pressure warning signal?
- At what measurement is the safety valve USUALLY set to open?
- Which of the following will be true about your brake function if your anti-lock braking system (ABS) fails?
- Which of the following is NOT part of the air brake system?
- The purpose of a supply pressure gauge is
- 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
- 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
Your go-to, trusted source
Experience the Driving-Tests differenceOur commitment to accuracy and quality in our practice tests
Explore our rigorous, multi-tiered verification process that ensures each question mirrors the official manual for unparalleled accuracy.
At Driving-Tests.org, we understand the importance of reliable and accurate practice tests to help you prepare for your DMV exam. That's why we've developed a meticulous process to create and continually update our practice questions, ensuring they reflect the most current driving laws and regulations.
Here's an inside look at how we maintain the highest quality in our practice tests.
Content Creation and Verification Process
- Alignment with Official Manuals:
Every question we develop is based on the most recent version of each state's official driving manual. Our team regularly monitors each state DMV's website for the latest updates to ensure our practice tests are always aligned with the most current information. - Community Feedback Integration:
We leverage feedback from our vast community of users to understand which topics are most frequently tested. This helps us focus on the areas that are most relevant and beneficial for your preparation. - Expert Content Creation:
Our in-house editor, Steven, who has extensive experience in driver education, crafts each question with precision. He conducts a thorough review of each question against the official manuals to ensure accuracy. - Rigorous Review Process:
Once Steven has finalized a set of questions, our team conducts a joint review session. This second level of scrutiny involves content accuracy, proofreading, and fact-checking to eliminate any errors. - User Feedback Mechanism:
After a question goes live on our site, we keep the lines of communication open. Each question features a feedback button, inviting users to report any issues or errors. This continuous feedback loop allows us to address and rectify any concerns promptly. - Responsive Updates:
In line with our commitment to accuracy, we quickly update our practice questions to reflect any changes in the DMV manuals. Additionally, we update the free electronic copy of the state's driver's license manuals on our site, typically within a few days after the DMV publishes them.
Our thorough quality control process ensures that you have access to practice tests that are as accurate and up-to-date as possible. We believe in the power of well-prepared drivers and are dedicated to providing you with the best study tools to help you succeed on your DMV exam.
Get your ELDT certificate and pass CDL exams the first time. Guaranteed.
Get full access to our 3-in-1 program, starting at $79. CDL schools charge $3,000-$4,000 for that.
All 1,500 KS exam-like questions
Pass Guarantee: pass your permit exam, or get your money back
ELDT certification included
Official FMCSA-approved provider, instant completion reporting
Industry-leading 99.06% success rate
Compare with the average US passing rate of 49%
Trusted by over 1.15 Million customers
The only program recommended by DMVs
