CDL Air Brakes Practice Test Results

Question 1
66% answer correctly
In vehicles equipped with air brakes, parking brakes are:
Disc brakes
Rotor brakes
Spring brakes
Air brakes
Question 2
48% answer correctly
On large buses the low pressure warning signal will trigger at what psi?
60
60 to 65
80 to 85
100
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 use the same set of brake controls
Two control systems that each have their own set of breaks
Two brake systems that each have their own set of controls