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