CDL Air Brakes Practice Test Results

Question 1
76% answer correctly
An air tank safety valve is typically set at how many psi?
125
150
100
200
Question 2
35% answer correctly
Automatic air tank drains should be emptied how often?
Weekly
Never
Daily
Monthly
Question 3
48% answer correctly
On large buses the low pressure warning signal will trigger at what psi?
80 to 85
60
60 to 65
100