At what air pressure should the low air warning alarm activate?

The low air warning alarm is designed to alert the driver when the air pressure in the system drops to a certain level. This is crucial for safety because air brakes rely on a minimum amount of air pressure to function effectively. The correct point at which the low air warning alarm activates is at 60 psi.

This activation point helps to ensure that the driver is made aware of the potential for brake failure or a loss of stopping power. At this threshold, the driver should take immediate action, as continuing to operate the vehicle with low air pressure could jeopardize safety. Knowing when the alarm activates is a fundamental part of being prepared and responsive while driving a school bus, where the safety of children and passengers is the top priority.