How many working brake lights are required to pass inspection?

To pass the inspection, a vehicle must be equipped with two working brake lights. This requirement is based on safety regulations that emphasize visibility and warning capability. Having two brake lights increases the likelihood that drivers behind the vehicle will see the signals when the brakes are applied. This redundancy minimizes the risk of accidents by ensuring that even if one light fails, the other remains operational to alert following vehicles to the driver's intention to stop or slow down.

The requirement does not call for three or four brake lights because two is deemed sufficient for effective communication of braking intentions to other road users. Therefore, vehicles are not penalized for having more than two brake lights, but the minimum standard required for passing inspection is firmly established at two.