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

1. You should drain your air tanks:

2. _________ must have a low air pressure warning signal.

All vehicles with air brakes
Only vehicles with air brakes built before 2015
Vehicles with air brakes built after 2010
Vehicles with air brakes built after 2005

3. If you are being tailgated, you should:

flash your brake lights.
speed up.
increase your following distance.
move to the left lane.

4. To prevent rollover, you should:

drive slowly around on ramps and off ramps.
keep the cargo as close to the ground as possible.
go slowly around turns.
All of the above.

5. The ________ brake system applies and releases the brakes when the driver uses the brake pedal during normal driving.

6. If you are being tailgated, you should:

turn on your taillights.
try to let the other vehicle pass.
drive on the shoulder.
speed up.

7. A driver distraction is anything that takes your attention away from driving, such as:

8. Air tanks must be drained completely to:

put alcohol into the air system.
pump water and compressor oil into the tanks.
remove all moisture and oil.
remove all the air.

9. Which of the following statements is true?

There is no way that short circuits due to damaged insulation can cause a vehicle fire.
Carrying a properly charged and rated fire extinguisher will help prevent fires.
Poor cargo ventilation is a common cause of fire.
Under-inflated tires will NOT cause a vehicle fire.

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

ALABAMA CDL AIR BRAKES PRACTICE TEST