Why is it important to use the "low air warning" signal?

Using the "low air warning" signal is vital for safety because it alerts the driver when the air pressure in the braking system is decreasing to a potentially dangerous level. Air brakes rely on a sufficient air supply to function effectively; if air pressure falls below a certain threshold, the brakes may not engage properly, leading to a significant loss of control over the vehicle.

This warning allows the driver to take immediate action, such as pulling over to a safe location and addressing the air pressure issue before driving becomes unsafe. The presence of this system is a critical feature in ensuring that drivers are aware of their vehicle’s braking conditions, ultimately helping to prevent accidents due to brake failure.