What must be functioning correctly for a vehicle to pass the light check?

For a vehicle to pass the light check during the Texas state inspection, it is necessary that all required lights be operational. This includes not just the headlights, but also taillights, brake lights, turn signals, and any other lighting systems mandated by law for safe vehicle operation. Each of these components plays a critical role in ensuring visibility and communication with other drivers on the road.

If any of these lights are malfunctioning or not working at all, it may lead to safety hazards, such as reduced visibility at night or during poor weather conditions, as well as ambiguity for other drivers regarding the vehicle's movements. Therefore, proper functioning of all required lights is essential for a vehicle to be deemed safe and roadworthy, thereby passing the inspection check.