CDL Air Brakes Practice Test Results

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