You may have noticed that most of the trains have a yellow or red cross sign on the backside of the last coach. You may have wondered what is the use of this sign. Believe me, this sign is very useful. It indicates that it is the last coach of this train. Railway personnel keep noticing this sign on every passing train. If they find any train without this cross sign than it is assumed that some coaches of the train get separated from the train and they immediately start some emergency procedures.
Apart from this cross sign there is also a small plate on which LV is written . LV stands for Last Vehicle. This plate also signifies that it is the last coach of this train.
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