In Partnership with FOX RIVER VALLEY PUBLIC LIBRARY DISTRICT
View instructions
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 Illinois CDL knowledge test. The IL 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 Illinois CDL Manual. Take this IL CDL practice test now to prepare for the actual air brakes test!
1.
You should NOT use the parking brakes if:
|
the brakes are too dry.
|
|
|
the brakes are cold.
|
|
|
the brakes are very hot.
|
|
|
All of the above.
|
2.
Your vehicle has air brakes. To stop, you should:
|
release the accelerator, push in the clutch, and shift to Neutral at the same time.
|
|
|
push the brake pedal down.
|
|
|
pump the brake pedal 3 times.
|
|
|
pull the parking brake control knob out.
|
3.
Which of the following is not a type of retarder?
|
Pressure
|
|
|
Hydraulic
|
|
|
Electric
|
|
|
Exhaust
|
4.
Weight that is loaded so there is a high center of gravity:
|
causes greater chance of rollover.
|
|
|
makes a vehicle easier to handle.
|
|
|
reduces the chance that the load will shift to the side or fall off.
|
|
|
All of the above.
|
5.
Before starting down a hill, you should:
|
look for an escape route.
|
|
|
slow down and shift to a lower gear.
|
|
|
apply the brakes hard.
|
|
|
release the accelerator and shift to Neutral at the same time.
|
Next page