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View All Plans- Updated for May 2025
- Based on 2025 NV commercial driver's license manual
Free Nevada CDL Air Brakes Test 2025
The Silver State relies on drivers with the air brake qualification in key industries, including mining (gold, silver, and lithium), tourism (Las Vegas, Reno, and Lake Tahoe), agriculture (cattle, hay, and alfalfa), and logistics and transportation. Failure to pass the Nevada DMV CDL Air Brakes Knowledge Test means that your CDL will include the restriction “L,” preventing you from operating commercial motor vehicles (CMVs) with air brakes. This “L” restriction will negatively affect your job prospects in these markets. Failing the air brakes test in Nevada will also result in a one-day waiting period and a fee should you decide to retake the test. Our Nevada DMV CDL Air Brakes Practice Tests are the perfect tool for passing your knowledge exam on the first attempt.
Navigating Nevada’s diverse terrain, including the steep grades and sharp curves of its mountains, demands the reliability of air brakes on heavy rigs. Additionally, the higher elevations experience winter ice and snow, compounding this need. Key transportation routes include I-80 (an east-west corridor crossing mountain passes like the Donner Pass), I-15 (running north-south through Las Vegas, connecting California and Utah), and US-95 (running north-south through deserts and mountains). Most semi-trucks, tractor-trailers, and commercial buses rely on air brakes for safe travel. Hence, removing the restriction from your CDL is vital for expanded job opportunities.
Companies requiring the air brake qualification include Swift Transportation (Reno) and Knight Transportation (Las Vegas) in the trucking industry and Greyhound Lines and Alliance Bus Group in the charter bus sector. The mining industry includes major companies like MP Materials Corp. and Nevada Gold Mines, which rely on air brake-qualified drivers. Prologis and Total Quality Logistics require the same in the tourism industry. Nevada’s school districts use air brakes on their full-size buses, employing hundreds of air brake-qualified drivers. The “L” restriction makes these jobs unattainable.
The written Air Brakes knowledge test features multiple-choice questions based on the state’s CDL manual (Nevada CDL Handbook 2025) and requires a minimum passing score of 80%. Our practice tests provide instant feedback on all your responses, helping ensure you pass the knowledge test. As a bonus, the information learned will also help you prepare to pass your skills test!
Our CDL Air Brakes Practice Tests cover everything needed and mimic the official DMV Air Brakes Knowledge 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 NV DMV exam
questions
correct answers to pass
passing score
List of questions (classic view)
- Which of the following are true about a dual air brake system?
- Which vehicles must have low air pressure warning signals?
- How can you tell if your vehicle is equipped with an anti-lock braking system (ABS)?
- What is the best way to test your vehicle's low air pressure warning signal?
- Under which conditions are front wheel brakes good?
- Which of the following will be true about your brake function if your anti-lock braking system (ABS) fails?
- How would you check your truck's slack adjusters?
- Slack adjusters are
- When should you drain your air tanks?
- Why must you pass a knowledge test on air brakes?
- The purpose of a supply pressure gauge is
- Which of the following should you do before leaving your vehicle unattended?
- After the initial drop, the maximum acceptable leakage rates per minute are
- How do brakes work on a long, steep downgrade?
- Spring brakes are
- An anti-lock braking system (ABS)
- If the air tanks are not drained,
- Which of the following is NOT part of the air brake system?
- What is the best way to test if your vehicle's spring brakes come on automatically?
- Which of the following can cause brakes to fade or fail?
- Which of the following is NOT part of the braking process when you're driving a tractor-trailer combination vehicle with an anti-lock braking system (ABS)?
- When should you use the parking brake?
- The tractor protection valve
- At what measurement is the safety valve USUALLY set to open?
- Which of the following is NOT part of the drum brake?
- 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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