Which of the following is NOT part of the vehicle safety inspection process?

The vehicle safety inspection process typically focuses on elements that directly affect the safety and functionality of the vehicle on the road. Checking transmission fluid, while important for the overall operation of the vehicle, is not a routine part of safety inspections. The primary goal of a safety inspection is to ensure that critical safety components are functioning correctly and that the vehicle meets regulatory standards for safety.

In contrast, inspecting tire tread depth, checking exhaust emissions, and testing brake functionality are all integral parts of a safety inspection. Tire tread depth is crucial for maintaining traction and preventing accidents, exhaust emissions checks are required for environmental compliance and to ensure that the vehicle is not polluting the atmosphere, and brake functionality is essential for the safe operation of any vehicle.

Thus, because checking transmission fluid does not directly relate to the immediate safety of a vehicle in terms of operation on the road, it is identified as not being part of the vehicle safety inspection process.