Air Brakes Endorsement Test | Nebraska 2024 #2

Train for FREE online with our Nebraska 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 NE Class A/Class B driver license in 2024, 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.

Number of Question 25

Passing Score 20

Number of Tests 20

1 . What is brake lag?

The time required for the brakes to work after the brake pedal is pressed

The distance between the brake pedal and the floor

The amount of air pressure used to stop the vehicle

Because air takes time to flow through the air lines to the brakes, air brakes cannot begin working instantly. There is often a brake lag of at least one-half of a second between the moment the brake pedal is pressed and the moment the brakes begin to work.

2 . Most heavy-duty vehicles use ____ air brake systems.

Single

Dual

Triple

Quad

The majority of heavy-duty vehicles are equipped with dual air brake systems.

3 . To ensure normal stopping power, drivers of vehicles equipped with a front brake limiting valve should:

Set the control to normal.

Set the control to the off position.

Set the control to neutral.

Keep the control at the halfway mark.

Some pre-1975 vehicles have a front brake limiting valve, which has "normal" and "slippery" settings. The idea behind these valves was to limit the air pressure available to the front brakes when driving on slippery surfaces, and thereby reduce the danger of a front-wheel skid. Studies have found that this is not actually a concern, so if your vehicle has a front brake limiting valve, leave it in the "normal" position.

4 . To stop in a vehicle that uses air brakes, the driver should:

Pull the air brake lever.

Engage the brake lever.

Push the brake pedal down.

Pull the brake pedal up.

To make a normal stop in a vehicle with air brakes, push the brake pedal down. The harder the pedal is pressed, the more air pressure is released.

5 . What must be on an air tank in an air-braked vehicle?

A check valve

A lock

A trap door

An oxidizer

All air tanks on air-braked vehicles must have one-way check valves located between the air compressor and the first reservoir. This prevents air from flowing out in the event of a leak.

6 . A low air pressure warning signal should activate:

When tank pressure falls below 120 psi.

When tank pressure falls below 55 psi.

When tank pressure falls below 10 psi.

In an air brake system, a low air pressure warning signal must come on if air pressure in the tanks falls below 55 psi. This warning signal may come in the form of a light, a buzzer, or a wig wag.

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2024 Nebraska | Frequently Asked Questions

A CDL Class A license in Nebraska allows the holder to operate any combination of vehicles with a Gross Combination Weight Rating (GCWR) of 26,001 pounds or more, provided the Gross Vehicle Weight Rating (GVWR) of the vehicle(s) being towed exceeds 10,000 pounds. It is typically used for driving tractor-trailers, truck and trailer combinations, and livestock carriers.

A Class A CDL license in Nebraska allows the holder to operate vehicles such as tractor-trailers, truck and trailer combinations, tank vehicles, and livestock carriers. It can also be used to drive flatbeds, and vehicles towing trailers or other vehicles over 10,000 pounds. However, certain endorsements may be required for specific types of vehicles.

To obtain a Class A CDL license in Nebraska, you must be at least 18 years old (21 for interstate driving), possess a valid Nebraska driver's license, pass a vision exam, and complete a written knowledge test. You also need to pass a skills test, which includes a pre-trip vehicle inspection, a basic controls test, and an on-road driving exam.

In Nebraska, you must be at least 18 years old to qualify for a Class A CDL license. However, if you plan to drive across state lines or handle hazardous materials, federal regulations require you to be at least 21 years old.

No specific endorsements are required for a Class A CDL license in Nebraska. However, certain types of driving jobs may require specific endorsements. For instance, hauling hazardous materials requires an H endorsement, transporting passengers requires a P endorsement, and driving tank vehicles requires an N endorsement. These endorsements require additional testing.

The Class A CDL skills test in Nebraska encompasses three main parts: the vehicle inspection test, the basic controls test, and the road test. The vehicle inspection test checks your ability to assess the safety of a commercial vehicle. The basic controls test evaluates your ability to maneuver and control the vehicle. The road test assesses your on-road driving skills.

Yes, Class A CDL license holders in Nebraska may face certain limitations based on their skills and medical conditions. For instance, if they can't operate a manual transmission, they'll get an automatic transmission restriction. If they fail the air brakes knowledge test or skills test, they'll get an air brakes restriction. Also, medical conditions might limit their driving privileges.

In Nebraska, the written Class A CDL test is primarily administered in English, following federal regulations. However, the Nebraska Department of Motor Vehicles (DMV) provides an interpreter for those who cannot understand or read English. It's important to contact your local DMV office in advance to request this service.

Yes, you can request accommodations for the Class A CDL written test in Nebraska if you have a disability. The Nebraska Department of Motor Vehicles (DMV) complies with the Americans with Disabilities Act (ADA) and provides reasonable accommodations to individuals who require them. To request accommodations, you should contact your local DMV office ahead of your test date.

If you don't pass the Class A CDL written test in Nebraska on your first try, you can retake it. However, you must wait at least one day before retesting. There is no limit on the number of times you can retake the test, but keep in mind each attempt requires a new fee.