What is the minimum air pressure required during the pre-trip check?

The minimum air pressure of 100 psi is critical during the pre-trip check for ensuring that the air brake system of a bus is functioning correctly and effectively. Proper air pressure is essential because it directly impacts the performance of the braking system. Air brakes rely on compressed air to operate; therefore, if the air pressure is too low, the brakes may not engage properly or could fail altogether, leading to safety hazards.

A minimum air pressure of 100 psi ensures that the system is adequately prepared to handle the demands placed on it during operation. It's important for drivers and maintenance personnel to be vigilant about checking this pressure to uphold safety standards and ensure reliable transportation services. Regular checks contribute to preventing brake failures, enhancing overall vehicle operability, and maintaining compliance with safety regulations.