The leakage rate for a triple combination vehicle with air brakes should be no more than ____ in one minute during a static leakage test.

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 the 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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