CDL Air Brakes Practice Test Results

Question 1
72% answer correctly
Spring brakes and air brakes should __________ be used together.
Sparingly
Always
Never
Frequently
Question 2
76% answer correctly
An air tank safety valve is typically set at how many psi?
200
125
100
150
Question 3
72% answer correctly
Spring brakes and air brakes should __________ be used together.
Never
Always
Sparingly
Frequently