When may the headlight on a train be extinguished?

The headlight on a train may be extinguished when the train is coupled to cars on other than a main track. This practice is typically implemented to reduce the risk of glare blinding other personnel or trains in proximity, especially in environments where visibility is less critical, such as in a yard or when performing switching operations.

In this context, extinguishing the headlight helps to prioritize safety by preventing disorienting light from affecting nearby workers or operators of other trains. It is important for operatives to understand that the rules are designed with safety and operational efficiency in mind.

The other scenarios generally do require the headlight to be illuminated, as it is crucial for maintaining visibility and ensuring that the train is clearly identifiable in varying situations, particularly in active operational areas where communication and signals are critical for the safe movement of trains.