Answer :
Final answer:
The maximum air loss allowed during a STATIC air brake test is 3 psi according to the U.S. Department of Transportation Federal Motor Carrier Safety Administration (FMCSA). This test ensures the vehicle's air brake system can maintain sufficient pressure.
Explanation:
In the context of testing the air brake systems on commercial vehicles or heavy trucks, the maximum loss of air pressure allowed during a STATIC air brake test is 3 psi (pounds per square inch) in one minute for a single vehicle. This is according to the U.S. Department of Transportation Federal Motor Carrier Safety Administration (FMCSA).
The air brake test is designed to ensure that the vehicle's air brake system is functioning properly and is able to maintain sufficient air pressure. If the system loses more than 3 psi in one minute during a STATIC condition (when the vehicle is not moving), it could indicate a problem with air leaks, which needs to be addressed due to safety considerations.
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