What action should be taken if your low air pressure warning light activates?

When the low air pressure warning light activates, the appropriate action is to pull over and inspect the air brake system. This warning indicates that the air pressure in the braking system has fallen below a safe level, which can lead to brake failure if not addressed immediately. Braking systems that rely on air pressure are crucial for the safe operation of commercial vehicles, and continuing to drive under these circumstances poses significant safety risks not only to the driver but also to others on the road.

Pulling over allows the driver to evaluate the situation safely. It's essential to check for potential leaks in the system, gauge readings, and any other indications that the air pressure is indeed insufficient. Ignoring the warning could result in a complete loss of braking ability, leading to dangerous situations. Shutting off the vehicle or checking unrelated components, such as the engine oil level, does not address the critical issue at hand and can further compromise vehicle safety.