CDL Air Brakes Practice Test Results

Question 1
69% answer correctly
If the air compressor stops working, air brakes:
Cannot be used
Can be used indefinitely
Immediately fail
Can still be used several times
Question 2
43% answer correctly
For vehicles that use air brakes, emergency and parking brakes:
Are not required
Must be mechanical brakes
Must be a combination of mechanical and air brakes
Can only be air brakes
Question 3
81% answer correctly
The air compressor governor keeps the air pressure in the air storage tanks between __________ and __________ psi.
1000, 1250
750, 1000
75, 100
100, 125