CDL Air Brakes Practice Test Results

Question 1
76% answer correctly
An air tank safety valve is typically set at how many psi?
100
200
150
125
Question 2
35% answer correctly
Automatic air tank drains should be emptied how often?
Monthly
Never
Weekly
Daily
Question 3
51% answer correctly
When is comes to stopping power, front wheel brakes __________ conditions.
Operate poorly when under load
Show greater stopping power when lightly loaded
Vary with
Show greater stopping power in bad weather