CDL Air Brakes Practice Test Results

Question 1
72% answer correctly
Spring brakes and air brakes should __________ be used together.
Never
Always
Sparingly
Frequently
Question 2
76% answer correctly
An air tank safety valve is typically set at how many psi?
200
150
100
125
Question 3
43% answer correctly
A dual air brake system is one in which:
Two control systems that each have their own set of breaks
Two brake systems use the same set of brake controls
Two brake systems that each have their own set of controls
Two sets of brake controls operate a single brake system