Question

The air leakage rate for a combination of two vehicles (engine off, brakes off) should not be greater than ____ psi or less in one minute?

1) 10
2) 20
3) 30
4) 40

Answer 1

The air leakage rate for a combination of two vehicles should not exceed 3 psi in one minute to ensure safety and proper functioning of the air brake system.

Step-by-step explanation:

The air leakage rate for a combination of two vehicles, when the engine is off and the brakes are off, should not be greater than 3 psi in one minute. This standard is a safety guideline that helps ensure that the air brake system is functioning properly and minimizes the risk of brake failure due to air leakage. Commercial vehicles rely on air pressure to enable the braking system, and maintaining the proper air pressure is critical for safe operation.