Block code

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abhijeet bharat gholkar

The Railway Block Code is a system of bells used to send simple messages about train operations from one signalbox to another. For example:

  • 1 bell - attention
  • 2 bells - train depart
  • 1 - 2 - 1 bells - light engine
  • 4 bells - passenger train
  • 3 bells - train arrive