CDL Air Brakes Practice Test Results

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