What is the maximum air pressure allowed during a pre-trip check?

During a pre-trip check for a bus, the maximum air pressure that is allowed is 120 psi. This specification ensures the proper functioning of the braking system and other air-operated devices on the bus. Maintaining air pressure within this limit helps to ensure that the brakes operate effectively, supporting safe driving conditions.

Exceeding this pressure could lead to risks associated with over-pressurized systems, such as potential damage to the air tanks or brake components, which can compromise safety. Understanding the operational limits, such as the maximum air pressure, is critical for any bus operator to perform thorough pre-trip inspections and ensure vehicle safety for passengers and drivers alike.