What should the air pressure loss be in a combination vehicle with a fully charged air brake system?

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Quizplus · Accepted Answer

The air pressure loss in a combination vehicle with a fully charged air brake system should be less than 3 psi per minute. This test should be performed during all pre-trip inspections. It is also a part of the CDL test. If combination vehicles lose air pressure in excess of this amount, the vehicles must be inspected by a qualified mechanic.

What Should the Air Pressure Loss Be in a Combination