Air Brakes #2
Air Brakes Endorsement Test | Nevada 2025 #2 Page 2 of 4
Train for FREE online with our Nevada CDL air brake test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a NV Class A/Class B driver license in 2025, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that the requirements for CDL may vary from state to state.
25
20
20
7 . Air pressure should build up in a single air system within:
One minute.
In a vehicle with a single air brake system, after the engine is at operating rpms, the pressure in the air system should generally build from 50 to 90 psi within three minutes.
8 . Air tank drains:
Clean the air in the passenger compartment.
In an air brake system, air tanks have drains to remove accumulations of water and compressor oil. Allowing water and oil to accumulate in the system could cause damage to the brakes. Manually operated drains should be used daily.
9 . Test the low pressure warning signal:
Before every trip.
It is essential that your low pressure warning light function properly. After allowing the system to charge, you can test the warning signal by rapidly applying and releasing the brake pedal. This will release air from the braking system and the warning signal should come on when pressure drops to a dangerous level.
10 . The emergency brake system uses:
Only parts unique to the emergency brake system.
In an air brake system, there are three different braking systems: a service brake system, a parking brake system, and an emergency brake system. The emergency brake system uses parts of both the parking and service brake systems.
11 . What color is the low air pressure warning light?
Purple
A low air pressure warning signal is required in vehicles with air brakes. The warning light is usually red and may be accompanied by a buzzer.
12 . What should happen before the air pressure in an air brake system tank falls below 55 psi?
The low air pressure warning signal must activate before the air supply pressure drops below 55 psi in the air tank. If the warning signal does not turn on when being tested during an inspection, the vehicle is not safe to drive.
2025 Nevada | Frequently Asked Questions
A CDL Class B license in Nevada allows individuals to operate single vehicles with a GVWR of 26,001 or more pounds, or a vehicle towing another not exceeding 10,000 pounds. It includes buses, farm labor vehicles, and any vehicle designed to transport 24 passengers or more, including the driver. This classification doesn't include motorcycles or mopeds.
A Class B CDL license in Nevada allows the holder to operate single vehicles with a gross vehicle weight rating (GVWR) of 26,001 or more pounds, or tow a vehicle not heavier than 10,000 pounds. This includes large passenger buses, segmented buses, delivery trucks, dump trucks with small trailers, and straight trucks.
To acquire a Class B CDL license in Nevada, you must be at least 21 years old (18 for intrastate driving), possess a valid Nevada driver's license, and pass a medical examination. You also need to pass the General Knowledge test and any other knowledge tests for the specific vehicle type. Lastly, you must pass a driving skills test in a vehicle representative of the class of CDL you're applying for.
To qualify for a Class B CDL license in Nevada, you must be at least 18 years old for intrastate driving (within Nevada only). However, if you intend to drive interstate (across state lines) or haul hazardous materials, you must be at least 21 years old.
Specific endorsements aren't necessary for a Class B CDL license, but they can expand job opportunities. Endorsements certify additional skills such as driving passenger vehicles, tank vehicles, or vehicles carrying hazardous materials. To get an endorsement, you must pass additional knowledge and skills tests related to the specific type of vehicle.
The Class B CDL skills assessment in Nevada encompasses three parts: a pre-trip inspection, a basic vehicle control test, and an on-road driving test. The pre-trip inspection tests your ability to assess the vehicle's condition. The basic control test evaluates your ability to maneuver and control the vehicle, and the on-road test assesses your driving skills in traffic.
Class B CDL license holders are limited to operating vehicles with a GVWR of 26,001 pounds or more, or any such vehicle towing another not in excess of 10,000 pounds. They cannot drive a tractor-trailer combination or a truck with double/triple trailers. Also, without specific endorsements, they cannot transport passengers or hazardous materials.
Yes, it's possible to take the written Class B CDL test in languages other than English. The Nevada DMV offers the test in Spanish. However, federal regulations require that all CDL holders understand English well enough to read road signs, prepare reports, and communicate with the public and law enforcement.
Yes, you can request test accommodations for the Class B CDL written exam in Nevada if you have a disability. The Nevada Department of Motor Vehicles (DMV) complies with the Americans with Disabilities Act (ADA) and provides accommodations such as sign language interpreters, extended test time, and tests in alternative formats. You should contact your local DMV office to make these arrangements.
Yes, you can retake the Class B CDL written test if you don't pass on your first attempt. In Nevada, you must wait at least one day before retesting. However, keep in mind that each retest will require a new fee. It's advisable to study thoroughly to ensure success on subsequent attempts.