#traffic_cop__trafficcop  a policeman who controls the flow of automobile traffic
  supertype:  #policeman__police_officer__officer  a member of a police force; "it was an accident, officer"
  subtype:  #crossing_guard  someone who helps people (especially children) at a traffic crossing
  subtype:  #pointsman  (British) a policeman stationed at an intersection to direct traffic

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