What action should you take if the low air pressure warning light activates during driving?

Answer: B — Safely stop the vehicle and conduct a brake system inspection

When the low air pressure warning light activates during driving, it indicates that the air pressure in the braking system is dropping below a safe level. This is a critical safety alert, as inadequate air pressure can lead to brake failure, significantly increasing the risk of an accident. The appropriate action in this situation is to safely stop the vehicle and conduct a brake system inspection. It ensures that the braking system is functioning correctly and allows you to identify any potential issues that could compromise safety. By doing so, you are addressing the problem at its source and preventing further complications that could arise from continued operation under potentially dangerous conditions. Taking other actions like speeding up to reach your destination would exacerbate the risk; ignoring the warning could lead to brake failure, causing a hazardous situation for everyone on the road; and switching to manual brake operation may not resolve the fundamental issue of declining air pressure in the system. Consequently, the safest and most responsible course of action is to conduct the inspection once the vehicle is stopped.