CDL Air Brakes Practice Test Results

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