Air Brakes #1
Air Brakes Endorsement Test | Nebraska 2025 #1 Page 3 of 4
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 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.
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13 . Most heavy-duty vehicles use ____ air brake systems.
Quad
The majority of heavy-duty vehicles are equipped with dual air brake systems.
14 . Using an Anti-Lock Braking System (ABS):
Provides more control.
An Anti-Lock Braking System (ABS) helps prevent wheel lockup during hard braking. While it provides better control, it does not necessarily shorten a vehicle's stopping distance.
15 . Emergency brakes:
All trucks, truck tractors, and buses must be equipped with emergency brakes and parking brakes.
16 . The ____ between an air compressor and reservoir tank prevents air from escaping if the air compressor has a leak.
A one-way check valve is required to be between an air compressor and the first main reservoir. This valve prevents air from escaping the system if the air compressor develops a leak.
17 . What must be on an air tank in an air-braked vehicle?
An oxidizer
