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Indian Railways X Sign: Most of you have surely noticed the large 'X' mark painted on the rear of a train's last coach. At some point, you must have wondered what this mark means and why it is placed there. This is not merely a decorative design; rather, it is considered one of the most critical protocols within Indian Railways. The answers to these very questions can be found in this report.

Why is the 'X' Mark Painted There?

According to official information, this mark serves specifically as a warning signal for railway staff—including station masters and personnel stationed at railway crossings. When a train passes through a station, the staff present there immediately look for this 'X' mark on the final coach. Furthermore, sighting this mark confirms that the train has proceeded forward with its passengers without any issues, and that none of its coaches have sustained any damage or detachment.

Is the Absence of the Mark Considered a Major Hazard?

Moreover, if a train passes through a station but the station master fails to spot the 'X' mark, he immediately deduces—without delay—that a major incident or mishap has occurred. The railway control room, as well as the stations immediately ahead and behind, are notified instantly. This ensures that any potential major accident can be averted as quickly as possible, and warnings are issued to prevent other trains from colliding with any coaches that may have detached or been left behind.

How are Safety Measures Ensured at Night?

While the mark is easily visible during the day, the Railway Department employs two specific techniques to ensure safety protocols are maintained during the night. First, a special luminous material is applied to this mark so that it glows visibly whenever light falls upon it.

Second, a red light is installed directly beneath it, which flashes intermittently; this ensures that, even in darkness or dense fog, staff members can identify from a distance that this is the last coach of the train.