What could be a violation concerning brake lights?

The violation concerning brake lights is related to them working intermittently. For safety and legal reasons, brake lights need to function properly each time the brakes are applied, ensuring that following drivers are aware of the vehicle's intentions to stop. If the brake lights operate only sometimes, this can lead to confusion for other drivers and increase the risk of an accident.

Intermittent brake light operation is a clear safety concern, as it does not provide consistent signals to other road users. All vehicles are required by law to have brake lights that operate reliably whenever the driver applies the brakes. This ensures clear communication on the road, and any failure to meet this standard can be classified as a violation of vehicle equipment regulations.

In contrast, brake lights that blink are generally not allowed as they do not provide a clear signal to stop. Bright but non-functioning brake lights mean that while they may be visually impressive, they do not convey the necessary information to other drivers. Lastly, if brake lights only operate while the vehicle is in motion, they would not function correctly when the driver needs to stop, which again constitutes a significant safety issue.