CDL Air Brakes Test (2024) - FREE Nevada CDL Practice Test

1. What factors can cause brakes to fade?

Slippery surfaces and shaded areas.
Gravel and tar.
Excessive heat and brakes out of adjustment.
Dirt roads and in unpaved yards.

2. After starting the engine, oil pressure should rise to a normal level:

3. When backing a trailer, turn the wheel right to make the cab go ________ and the trailer go ________.

4. If you must stop on a one-way or divided highway, you should place warning devices _______ toward the approaching traffic.

5. To operate a vehicle equipped with air brakes, you must pass the air brakes knowledge test. Why?

If you don't pass the air brakes test, you can't get a CDL.
All trucks have air brakes.
If you don't, you will only receive a CDL permit.
If you don't pass the air brakes test, you will be restricted to driving vehicles without air brakes.

6. To use the controlled braking method in an emergency, you should:

pump the brake pedal 3 times.
apply your brakes all the way, and release the brakes when the wheels lock up.
apply the brakes when the wheels lock up.
apply the brakes as hard as you can without locking the wheels.

7. To avoid becoming a distracted driver you should:

not engage in complex conversations with others.
adjust all vehicle controls and mirrors while driving.
eat and drink while you drive.
not turn off all communication devices.

8. With a dual air brake system:

each system shares air tanks.
each system has its own air tanks, hoses and lines.
each system shares the same lines and hoses.
one system is the main braking system while the other is a back-up system.

9. If you must stop on a one-way or divided highway, place your warning devices:

100 feet, 200 feet, and 300 feet toward the approaching traffic.
50 feet, 100 feet, and 150 feet toward the approaching traffic.
10 feet, 50 feet, and 150 feet toward the approaching traffic.
10 feet, 100 feet, and 200 feet toward the approaching traffic.

10. When going down grades, you should:

shift up.
put the transmission in Neutral.
rely solely on engine braking to reduce your speed.
downshift to a lower gear.

NEVADA CDL AIR BRAKES PRACTICE TEST