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Question
During a static leakage test, the maximum leakage rate for a triple combination vehicle with air brakes is ____ in a minute.
Answers
A.  3 psi
B.  5 psi
C.  7 psi
D.  9 psi
Explanation
When performing a static leakage test on a triple combination vehicle with air brakes, the leakage rate should be no more than 5 psi in one minute. If air leaks from the air brake system at a quicker rate, the vehicle should not be driven because something likely needs to be repaired.

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