According to the Dimming Headlight Rule, when should headlights be dimmed when approaching the head end of a train at night?

The correct answer indicates that headlights should be dimmed when approaching and passing the head end of a train at night. This practice is essential for safety and visibility. Dimming the headlights helps to prevent blinding other crew members who might be working near the tracks, particularly at the ends of trains where visibility is critical. This procedure is not only a best practice but is often a requirement in railway operations to ensure the safety of all personnel involved.

In scenarios where headlights are not dimmed, such as when signaling the engineer or at significant distances from the train, there is potential for safety hazards. The bright lights can obscure vision and lead to dangerous situations, particularly if crew members are close to the track or performing tasks in that area. Hence, the emphasis is on dimming headlights to maintain a safe operating environment when in proximity to the head end of a train.