In Partnership with Stevens County Library
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 Kansas CDL knowledge test. The KS 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 Kansas CDL Manual. Take this KS CDL practice test now to prepare for the actual air brakes test!
1.
Which of the following is a reason why air tanks must be drained?
|
Your transmission fluid may drain out.
|
|
|
The governor may stop the compressor from pumping air.
|
|
|
Your battery fluid may drain out.
|
|
|
Your brakes may fail due to the water freezing.
|
2.
The s-cam forces the brake shoes away from one another and presses them against the inside of the brake drum. It is called the s-cam because:
|
it is shaped like the letter "S".
|
|
|
"S" stands for "Shoes".
|
|
|
it is a safe-driving brake.
|
|
|
it applies a "Shock" to the brakes.
|
3.
On any upgrade, gravity:
|
doesn't affect your speed.
|
|
|
slows you down.
|
|
|
speed you up.
|
|
|
doubles your speed.
|
4.
Service brakes should:
|
only be checked by a mechanic.
|
|
|
be checked before each trip.
|
|
|
always be checked before applying the brakes.
|
|
|
All of the above.
|
5.
If the drive wheels begin to spin when accelerating, you should:
|
brake gently.
|
|
|
take your foot off the accelerator.
|
|
|
continue to accelerate.
|
|
|
set the parking brake.
|
Next page