Artificial intelligent assistant

switchman

switchman
  (ˈswɪtʃmən)
  [f. switch n. 3 a + man n.1]
  A man who works a switch or set of switches on a railway; a pointsman.

1843 Civil Eng. & Arch. Jrnl. VI. 23/1 General regulations for police, superintendent, inspectors, constables, switchmen and gatekeepers. 1898 Hamblen Gen. Manager's Story x. 137 When an accident occurs, conductors, brakemen, and switchmen all unite to swear the blame on the unfortunate engineer.

Oxford English Dictionary

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