CDL Air Brakes Practice Test Results

Question 1
68% answer correctly
What are spring brakes used for?
Trailer brakes
Cab brakes
Air brakes
Emergency and parking brakes
Question 2
35% answer correctly
Automatic air tank drains should be emptied how often?
Never
Monthly
Daily
Weekly
Question 3
82% answer correctly
Which vehicles must have a low pressure warning signal?
All singles with air brakes
All vehicles with air brakes
All vehicles
All doubles and triples with air brakes