CALIFORNIA CDL AIR BRAKES PRACTICE TEST
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 California CDL knowledge test. The CA 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 California CDL Manual. Take this CA CDL practice test now to prepare for the actual air brakes test!
1.
If the spring brakes do not release when you push the trailer air supply control, you should:
|
check the air line connections.
|
|
|
rev or
lug the engine.
|
|
|
check the electrical cables.
|
2.
The Johnson bar is a valve that:
|
is installed in the first tank the air compressor pumps air to.
|
|
|
reduces the braking pressure to a safe level.
|
|
|
works the trailer brakes.
|
3.
If the low pressure warning signal doesn't work:
|
this could cause sudden emergency braking in a single-circuit air system.
|
|
|
you could lose air pressure and you would know it.
|
|
|
None of the above.
|
4.
To use the controlled braking method in an emergency, you should:
|
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.
|
5.
When backing a trailer, turn the wheel right to make the cab go ________ and the trailer go ________.
|
right; left
|
|
|
left; left
|
|
|
left; right
|
Next page
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More