Champaran HumSafar Express : इन अजनबी सी राहों में, जो तू मेरा हमसफ़र हो जाये, बीत जाए पल भर में ये वक़्त, और हसीन सफ़र हो जाये. - Piyush Singh

Fouling Mark.

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No.. What does it mean in the context of IR?? I have seem these labels near railway tracks at instances...

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Ok... What does it mean actually?

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F.M. means fouling mark or fouling point.
It is the point beyond the converging point of two or more tracks before which train on one of those tracks have to be stopped so that train movement is not obstructed in other tracks.

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FM means "fouling mark" mark at which the infringement of fixed standard dimension occours. Where 2 lines cross or join one another. FM is a point to the rear of a converging junction, such train must be to the rear of that point in order to ensure that any train moving on the other converging line can proceed without being obstructed. Answer taken from FAQ section.

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