Whistle post

{
  "id": "MLC-T-IND-006588",
  "term": "Whistle post",
  "field": "Industrial and trades",
  "definition": "A trackside marker indicating to a locomotive engineer that the train's whistle or horn must be sounded. These posts are placed at a specific distance before level crossings, tunnels, or other locations where an audible warning is required for safety. The exact distance from the hazard and the required whistle pattern are specified by railway operating rules.",
  "synonyms": [
    "whistle board"
  ],
  "subject": "Rail equipment",
  "translations": {
    "de": "Whistle Post",
    "es": "poste de silbato",
    "fr": "sifflet"
  },
  "url": "https://mlchart.com/terminology/industrial/whistle-post/"
}