CDL Air Brakes Practice Test Results

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