CDL Air Brakes Test (2023) - FREE NV CDL Practice 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:

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.

6. If you are driving a 30-foot vehicle at 55 mph, you should leave at least _____ between you and the vehicle ahead.

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:

CDL AIR BRAKES PRACTICE TEST - NEVADA