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

1. If you must drive slowly, how should you alert following drivers?

Use your emergency flashers if it is legal
Flash your brake lights
Turn on your taillights

2. The most common type of brake is the:

3. ABS brakes help you:

downshift before starting down a hill.
lock up the wheels in an emergency stop.
avoid wheel lock up.

4. If you must drive through a deep puddle you should:

slow down and place transmission in a low gear.
speed up to get through the puddle as quickly as possible.
apply the brakes until your speed reaches 40 mph.

5. To prevent rollover, you should:

place the cargo near the rear of the trailer.
put the lightest parts of the cargo under the heaviest parts.
keep the cargo as close to the ground as possible.

6. The use of brakes on a steep downgrade is:

the main braking factor.
a supplement to the braking effect of the engine.
much more effective than the engine braking effect.

7. Which of the following is NOT part of the air brake system?

8. Which of the following is NOT a way to determine if your trailer is equipped with ABS (antilock braking system)?

It has yellow ABS malfunction lamps.
The letters "ABS" are printed on the side of the steering wheel.
It was built after March 1, 1998.

9. Radial and bias-ply tires:

should be used together.
should be used together only when driving in packed snow.
should not be used together.

10. The trailer hand valve should:

never be used for parking.
never be used to test the trailer brakes.
be used in driving.

AIR BRAKES CDL PRACTICE TEST - WASHINGTON