CDL Air Brakes Practice Test Results

Question 1
35% answer correctly
Automatic air tank drains should be emptied how often?
Daily
Weekly
Monthly
Never
Question 2
69% answer correctly
If the air compressor stops working, air brakes:
Can be used indefinitely
Can still be used several times
Immediately fail
Cannot be used
Question 3
85% answer correctly
A supply pressure gauge is used for:
To check tire pressure
To check for air leaks
To check air tank pressure
To check air line pressure