CDL Air Brakes Practice Test Results

Question 1
82% answer correctly
Air brake systems consist of which three components?
Standard, parking and emergency brakes
Duty, parking and emergency brakes
Service, parking and emergency brakes
Parking and emergency brakes
Question 2
46% answer correctly
How can you test the low pressure warning signal?
Kink the service line
Push the low pressure warning signal test button
Put on the parking brake and continuously pump the brakes
Release the parking brake and continuously pump the brakes
Question 3
50% answer correctly
Modulating control valves are used to:
Apply the air brakes gradually
Apply the spring brakes gradually
Apply the spring and air brakes together
Switch between spring and air brakes