- Updated for March 2025
- Based on 2025 AR commercial driver's license manual
Free Arkansas CDL Air Brakes Test 2025
Passing the Arkansas DMV CDL Air Brakes Test is essential for anyone looking to operate commercial motor vehicles (CMVs). Without passing, your CDL will include the restriction “L,” preventing you from operating CMVs with air brakes. Failing the air brakes test results in a one-day waiting period and a fee before you can retake it. Our Arkansas DMV CDL Air Brakes Practice Tests are designed to help you pass your knowledge exam on the first attempt.
Air brakes are essential for navigating Arkansas’s diverse terrain, from the flat Lowlands in the east to the Ozark and Ouachita Mountains in the west, where skilled braking is crucial (especially on I-49). Other key transportation routes include I-40 (which runs freight east-west in the state), I-55 (linking Arkansas to the midwest and southeast), and Route 67 (connecting Little Rock to Missouri). As most semi-trucks and tractor-trailers are equipped with air brakes, restriction “L” would limit your marketability.
The air brake qualification is crucial for employment across the Natural State’s leading industries, including agriculture, manufacturing, and transportation. Companies such as J.B. Hunt, Tyson Foods, and Walmart Transportation in the logistics sector and Georgia-Pacific and Nucor Steel in the manufacturing sector require air brake-qualified drivers. The state’s charter bus companies, including Arrow Coach Lines and Jefferson Lines, rely on air brake-qualified drivers. Even the thousands of full-size school buses throughout the state use air brakes and have this requirement. The “L” restriction makes operating CMVs equipped with air brakes illegal, making the above-listed jobs unattainable.
Our CDL Air Brakes Practice Tests cover essential knowledge for the official DMV Air Brakes knowledge test. This test features multiple-choice questions based on the state’s CDL manual (Arkansas CDL Handbook 2025) and requires a score of at least 80% to pass. The information you learn will also be useful as you practice inspecting and operating CMVs to pass your skills test. The skills test includes inspecting components, testing for air pressure and leaks, and operating air brake-equipped vehicles. Overall, the official DMV test ensures you’re proficient in air brake systems, effective operation, and air-brake inspection procedures.
Our Practice Tests are engineered to offer real-time feedback on all responses and mimic the content and format you will face on the official knowledge test. This scientifically proven approach improves retention and ensures you’re prepared to pass the test.
- 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 AR DMV exam
questions
correct answers to pass
passing score
List of questions (classic view)
- How would you check your truck's slack adjusters?
- Which of the following are true about a dual air brake system?
- Why must you pass a knowledge test on air brakes?
- Slack adjusters are
- Spring brakes are
- How do brakes work on a long, steep downgrade?
- Which of the following is NOT part of the drum brake?
- 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)?
- At what measurement is the safety valve USUALLY set to open?
- When should you use the parking brake?
- After the initial drop, the maximum acceptable leakage rates per minute are
- What is the best way to test your vehicle's low air pressure warning signal?
- Which of the following should you do before leaving your vehicle unattended?
- The tractor protection valve
- What is the best way to test if your vehicle's spring brakes come on automatically?
- Which vehicles must have low air pressure warning signals?
- Which of the following is NOT part of the air brake system?
- Which of the following can cause brakes to fade or fail?
- How can you tell if your vehicle is equipped with an antilock braking system (ABS)?
- An antilock braking system (ABS)
- Which of the following will be true about your brake function if your antilock braking system (ABS) fails?
- The purpose of a supply pressure gauge is
- When should you drain your air tanks?
- If the air tanks are not drained,
- Under which conditions are front wheel brakes good to use?
- 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
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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:
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