What must be in working order for a vehicle to pass its safety inspection?

For a vehicle to pass its safety inspection, it is essential that all critical safety features are in working order. This includes vital components such as brakes, lights, steering, and other key safety elements. Each of these components plays a significant role in ensuring that the vehicle operates safely on the road.

Brakes are fundamental for stopping and controlling the vehicle, making their proper function crucial. Lights are necessary not only for visibility but also for signaling intentions to other drivers. Steering must be responsive and reliable to maintain control of the vehicle. A comprehensive safety inspection assesses these elements collectively to ensure the vehicle meets safety standards and is safe for operation.

The other options do not encompass the full range of essential safety features required for a vehicle to be considered safe for driving. Focusing solely on lights and turn signals or specific aspects like engine performance metrics or tire tread depth would neglect other critical safety components vital for overall road safety.