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Automatic Train Control: An Overview of Available Systems

An automatic train control (ATC) system integrates all the vital and non-vital functions that guarantee the safe operation of trains. It comprises three sub-systems, which include onboard and wayside equipment:

  • Automatic Train Supervision (ATS)
  • Automatic Train Operation (ATO)
  • Automatic Train Protection (ATP)

These sub-systems, together with a full interlocking system, perform the following functions:

  • Signalling
  • Automatic train protection
  • Traffic management

Automatic train control also includes automatic train operation functions.

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