CDL Air Brakes Practice Test Results

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