Which of the following should be checked before driving a fire apparatus?

Before driving a fire apparatus, ensuring that the tire pressure and lights are functioning properly is crucial for safe operation. Proper tire pressure is essential for maintaining control and stability, especially when navigating emergency situations or responding quickly to calls. Under-inflated or over-inflated tires can affect handling and lead to accidents.

Similarly, the lights play a vital role in visibility and safety. Emergency lights must be operational to alert other drivers and pedestrians, allowing for safe navigation through traffic. Non-functioning lights can put both the operator and the public at risk.

While checking fuel levels is important, it is just one aspect of the overall inspection. The condition of the body paint and the radio system, while they may impact the overall appearance or functionality of the vehicle, do not directly affect safety while driving. Therefore, the comprehensive check of tire pressure and lights stands out as the most critical evaluation before operating a fire apparatus.