Free Nebraska CDL Air Brakes Practice Test 2023

Do you need an Air Brakes endorsement or an L endorsement for your commercial driving license? The Nebraska CDL Air Brake test has some differences from other endorsements because your license will receive a mark of restriction if you fail the test. So having good preparation before exam day is very necessary. To ensure that our questions are relevant, all of our CDL practice test packs are based on the Nebraska CDL Manual. Each question has a detailed explanation for you to thoroughly learn the format and the topic. Don't be afraid of having a restriction on your license. Let’s try our CDL Practice Test Nebraska to get ready to pass the Nebraska CDL Air Brake Test now. 

Our CDL practice tests:
Based on 2021 NE commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
NE CDL Air Brakes Test format:
25 questions
20 correct answers to pass
80% passing score
List of questions
The stop light switch:
The driver must be able to see a low air pressure warning which comes on before pressure in the service air tanks fall below ____ psi.
At 55 mph on dry pavement, the air brake lag distance is how many feet?
Parking or emergency brakes of trucks and buses can be legally held on by ____ pressure.
The main factor in causing brake fade is:
In ideal conditions a truck or bus with air brakes going at 55 mph would require the stopping distance of how many feet?
When the engine is off and the parking brake released, a single vehicle air loss rate should be less than ________ psi in one minute.
The type of brakes that clamp the rotor between the brake shoes is:
When should the spring brakes activate?
What should a driver do when the low air pressure warning signal comes on?
When your brake's main air pressure is lost ________.
Air braking takes more time than hydraulic braking because:
If you are driving down a steep downgrade and have reached your safe speed of 40 mph, you would apply the service brake until your speed dropped to ____ mph.
When checking the air pressure buildup, pressure should build:
In order to make contact with the brake drum, the brake pads and linings are pushed outward by the:
The use of brakes on a long and steep downgrade under normal conditions is only a supplement to:
You should avoid using the parking brake when _______.
At what level will the low air warning usually take effect?
The air tanks must be drained because:
How does the antilock brake system benefit the driver?
The belt of a belt-driven air compressor should be ________.
Air tanks should be drained:
The governor stops the compressor from pumping air at:
Vehicles with ABS have malfunction lamps that are what color?
If your brakes are wet, what should you do to dry them quicker?