CDL Air Brakes Practice Test Results

Question 1
66% answer correctly
In vehicles equipped with air brakes, parking brakes are:
Air brakes
Disc brakes
Rotor brakes
Spring brakes
Question 2
48% answer correctly
On large buses the low pressure warning signal will trigger at what psi?
80 to 85
60 to 65
60
100
Question 3
69% answer correctly
If the air compressor stops working, air brakes:
Can be used indefinitely
Can still be used several times
Immediately fail
Cannot be used