CDL Air Brakes Practice Test Results

Question 1
55% answer correctly
Dual parking control valves are used in which of the following circumstances?
During routine operation
When air pressure is at its maximum
During emergencies
While parked
Question 2
59% answer correctly
Maximum leakage rates are more than __________ psi in __________ minutearray(s).
3, 1
2, 1
2, 2
3, 2
Question 3
90% answer correctly
What is the most common type of air brake?
Wedge brake
C-clamp drum brake
Disc brake
S-cam drum brake