Did you ever wonder why the last coach of train is marked with X letter
The yellow X sign denotes the coach is the Last Vehicle of the train
The X sign is always present on the last coach
The mark helps railway staff at a station know the whole rake has passed
During night or foggy weather, railway staff looks at blinking red lamp on the back of coach
Fun fact: X is a cross mark not an English letter
X always represents that something ends there, hence X on train’s coach
Absence of X means, the train has emergency or missing its coaches
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