- 0 Incorrect (6 allowed to pass)
- 0 Correct
- Updated for February 2025
- Based on 2025 AK commercial driver's license manual
Free Alaska CDL Air Brakes Test 2025
Passing the Alaska DMV CDL Air Brakes Test is essential for operating large commercial motor vehicles (CMVs). Our CDL Air Brakes Practice Tests are designed to prepare you for success, helping you confidently pass your knowledge exam on the first attempt. If you don’t pass, your CDL will include the restriction “L,” barring you from operating CMVs with air brakes. Since semi-trucks and tractor-trailers are typically equipped with air brakes, obtaining this endorsement is essential to operate those vehicles. The air brakes qualification is a requirement of most companies due to the commonality of this braking system. In Alaska, with vast mountain ranges like the Alaska Range and the Chugach Mountains and remote and wind-swept highways, such as the Dalton Highway and the Seward Highway, air brakes are essential. Many roads in Alaska are isolated, and emergency services can be far away, so air brakes are crucial for drivers on these isolated roads.
Industries across the Last Frontier, like oil and gas, fishing, mining, and tourism, rely on drivers with the air brake qualification. Companies such as Carlile Transportation and Alaska Freight Lines (both headquartered in Anchorage) require certified drivers for transporting goods to remote areas. Charter bus companies (like Alaska Coach Tours), school buses, and the construction industry also depend on air brake-certified drivers to safely navigate. The oil industry includes companies like BP and ConocoPhillips that require qualified drivers for transporting heavy equipment. Tourism and sightseeing companies offer tours in rugged and mountainous areas, requiring air-brake-qualified drivers for passenger transport. Simply put, the “L” restriction makes operating CMVs equipped with air brakes illegal, thus limiting your job prospects.
The official two-part DMV test covers the parts of an air brake system, effective operation, and air-brake inspection procedures. The skills test requires you to physically inspect an air brake system, identify its components, and operate a vehicle equipped with air brakes. This test includes checking air pressure, testing the brakes for leaks, and more. The multiple-choice written test requires a score of at least 80% to pass and features questions directly from material found in the state’s CDL manual.
Our CDL Air Brakes Practice Tests mimic the content and format you will face on the {government-agency) test. Our practice test questions and answers provide responses in real time so you can learn quickly and be confident of passing your official exam.
- 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 AK DMV exam
questions
correct answers to pass
passing score
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 antilock 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 to use?
- An antilock braking system (ABS)
- Which of the following can cause brakes to fade or fail?
- 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 you're driving a tractor-trailer combination vehicle with an antilock 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 antilock 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?
- Why must you pass a knowledge test on air brakes?
- 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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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.
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