In which scenario can the headlight be dimmed?

The correct scenario for dimming the headlight is when the locomotive is at stations and yards where switching is done. In this context, dimming the headlight helps to minimize glare and distractions for both the crew and any personnel working in the area. It is important to maintain safety and ensure proper visibility without overwhelming the surroundings with bright light.

Dimming headlights in switching areas is a common practice designed to increase safety during low-speed operations when other workers might be present, and full illumination is not necessary. This practice allows for better communication and visibility for crew members and reduces the risk of accidents in crowded environments.

In contrast, situations like traveling through tunnels, at high speeds, or during bad weather typically require the headlight to remain bright to ensure maximum visibility and safety. Each of these scenarios has different safety implications that necessitate a full-strength headlight to help in detecting obstacles and enhancing overall awareness.