The headlight turning off rule applies when the train is what?

The headlight turning off rule is pertinent to situations where safety and operational protocols are being observed. When the train is stopped clear of the main track, it is typically not in a scenario where it poses a risk of obstructing other trains or requiring visibility for active rail traffic. In this situation, the need for the headlight to remain on diminishes, as the primary purpose of the headlight is to provide visibility for the train's operation on the main line and to signal its presence to other rail traffic.

In contrast, when a train is at a station waiting for passengers, it generally remains operational, and the headlight serves to signal its active presence to other trains and personnel. Similarly, a train in a siding may be in proximity to other tracks, necessitating the continued use of the headlight. Finally, when a train is preparing for a new assignment, it is still considered an operational phase where the headlight should remain on for safety.

Thus, the scenario of being stopped clear of the main track aligns with the protocol allowing for the headlight to be turned off, ensuring compliance with safety regulations while minimizing unnecessary illumination.