What should be done before driving a vehicle equipped with air brakes?

Conducting a pre-trip inspection to check the air brake system functionality is crucial before driving a vehicle equipped with air brakes. This inspection ensures that the braking system is in optimal working condition, which is vital for safe vehicle operation. The air brake system relies on compressed air to operate, and any issues such as leaks, low air pressure, or malfunctioning parts can severely impact the braking performance, leading to potential accidents.

A thorough pre-trip inspection includes verifying that the air pressure is at an adequate level, checking for any visible leaks, ensuring that all components like the compressor and valves are functioning correctly, and testing the brake pedal feel. This preventative measure helps mitigate risks associated with brake failures while on the road.

While checking engine oil levels and ensuring tire inflation are important for overall vehicle maintenance, they do not specifically address the necessary checks for the air brake system. Cleaning the vehicle's exterior, while beneficial for visibility and aesthetics, has no impact on the functionality of the air brakes.