Air Brakes #2
Air Brakes Endorsement Test | Nebraska 2025 #2 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 . If your tractor is equipped with ABS but your trailer is not, the ABS:
Will allow others to see when you brake.
In a tractor-trailer combination, if the tractor is equipped with an Anti-Lock Braking System (ABS) but the trailer is not, the ABS will still improve the driver's steering control. The driver should keep an eye on the trailer and let up on the brakes if the trailer begins to swing out.
14 . On newer vehicles, how do you put on the parking brake?
Pull up on the steering column.
On newer vehicles with air brakes, the parking brake is controlled by a yellow, diamond-shaped knob. The knob is pulled out to set the brakes, and pushed in to release them.
15 . 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.
16 . A tank endorsement is:
Optional when transporting hazardous materials.
With some exceptions, you must have a tank endorsement to transport liquids or gases. This applies to both hazardous and non-hazardous substances.
17 . During a static leakage test, the maximum leakage rate for a double combination vehicle is:
4 psi in one minute.
