CDL Air Brakes Practice Test Results

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