CDL Air Brakes Practice Test Results

Question 1
50% answer correctly
Modulating control valves are used to:
Switch between spring and air brakes
Apply the air brakes gradually
Apply the spring and air brakes together
Apply the spring brakes gradually
Question 2
82% answer correctly
Air brake systems consist of which three components?
Duty, parking and emergency brakes
Standard, parking and emergency brakes
Service, parking and emergency brakes
Parking and emergency brakes
Question 3
66% answer correctly
In vehicles equipped with air brakes, parking brakes are:
Disc brakes
Spring brakes
Rotor brakes
Air brakes