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Question
During a static leakage test, the maximum leakage rate for a double combination vehicle is:
Answers
A.  3 psi in one minute.
B.  6 psi in one minute.
C.  8 psi in one minute.
D.  4 psi in one minute.
Explanation
When performing a static leakage test on a double combination vehicle with air brakes, the leakage rate should be no more than 3 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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