On night trains departing from Chennai Central, Loco Pilots and Assistant Loco Pilots are dedicated to ensuring a safe journey while passengers sleep. As they navigate through the night at speeds of up to 100 km/h, these professionals communicate constantly, calling out and verifying every signal along the route. Pradeep Kumar, a former member of the Railway Board’s Infrastructure Department, emphasizes the importance of this communication in preventing accidents. Each signal has a unique identifier, and their exchange of information is critical, especially in the darkness where a momentary lapse could lead to disaster. Before the train even leaves the platform, the Loco Pilot has already reviewed the entire journey, including stops and potential speed restrictions. This level of concentration is essential, as they remain vigilant throughout the night, ensuring the safety and comfort of passengers. The silent night is a facade; behind it lies a complex system of vigilance and teamwork that guarantees a safe passage.