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The air brakes endorsement applies to applicants who wish to drive a vehicle with air brakes in Class A, B, or C CDL. To drive a vehicle with air brakes, you must pass the air brake component of the Nevada CDL knowledge test. The NV CDL air brakes test consists of 25 questions, and you'll need at least 20 correct answers to pass (80%). The test covers the information found in the air brakes section of the Nevada CDL Manual. Take this NV CDL practice test now to prepare for the actual air brakes test!
1. If you are being tailgated, you should:
avoid quick changes.
increase your following distance.
avoid tricks like turning on your taillights or flashing your brake lights.
All of the above.
2. How do you check that spring brakes come on automatically?
On single vehicles, continue to step on and off the brake pedal until the parking brake valve pops out.
On a tractor-trailer combination vehicle, continue to step on and off the brake pedal until the tractor protection valve and the parking brake valve close.
Continue to step on and off the brake pedal until the air pressure falls to the manufacturer’s specification.
All of the above.
3. Emergency brakes must be held on by:
hydraulic pressure.
dynamic pressure.
mechanical force.
air pressure.
4. Banked curves:
have a safe "design speed".
are reserved for pedestrians.
should always be avoided.
can be taken at any speed.
5. Distracted driving may be caused by _________ while driving.
listening to music
maintaining constant speed
All of the above.
6. If you are driving a 30-foot vehicle at 55 mph, you should leave at least _____ between you and the vehicle ahead.
2 seconds
5 seconds
3 seconds
4 seconds
7. When confronted by an aggressive driver, you should:
avoid eye contact.
make every attempt to get out of their way.
call the police, if you have a cell phone and can do it safely.
All of the above.
8. Supply pressure gauges tell drivers:
how much air pressure they are applying to the brakes.
how much pressure is in the air tanks.
how much pressure the relay valves should send to the trailer brakes.
All of the above.
9. An anti-lock braking system (ABS):
should help you steer around an obstacle while braking.
helps you avoid wheel lock up.
helps you avoid skids caused by over braking.
All of the above.
10. Typically an air system is fully-charged at:
25 psi
250 psi
75 psi
125 psi
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NV CDL Air Brakes Test

Number of questions: 25
Correct answers to pass:20
Passing score:80%
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