What is an example of a vehicle safety check in the TPST?

The correct choice involves inspecting the brakes, lights, and tires, as these components are critical for ensuring the safe operation of a vehicle. Checking the brakes ensures they function properly, which is essential for stopping the vehicle effectively and preventing accidents. Lights are vital for visibility and signaling to other road users, especially in low-light conditions or during inclement weather. Tires, which interact with the road, need to be in good condition to provide proper traction and handling. Regular checks of these components help to identify potential issues before they lead to safety hazards on the road.

In contrast, evaluating the vehicle’s color or ensuring the interior is clean, such as vacuuming, does not contribute to road safety. Similarly, testing radio functions, while relevant for driver convenience and entertainment, does not impact the vehicle's operational safety. Therefore, the most relevant and essential safety checks are related to the key mechanical functions that directly affect vehicle performance and safety.