Do all vehicles with air brakes need to have a low air pressure warning signal?

All vehicles equipped with air brakes are required to have a low air pressure warning signal. This requirement is in place to ensure safety by alerting the driver when the air pressure in the braking system drops to a level that could compromise braking performance. The purpose of the warning signal is to inform the driver in a timely manner so they can take appropriate measures, such as maintaining air pressure or pulling over safely before brakes may fail.

By having a low air pressure warning system, drivers of air-braked vehicles are provided with crucial information about the state of their braking system and can avoid potentially dangerous situations that could arise from unexpected loss of braking power. This regulation is a key aspect of vehicle safety standards and compliance, which is why it applies universally to all vehicles fitted with air brakes, regardless of their weight classification or the complexity of their air brake systems.