"pilot vehicle" meaning in English

{
  "forms": [
    {
      "form": "pilot vehicles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "pilot vehicle (plural pilot vehicles)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Australian English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Road transport",
          "orig": "en:Road transport",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A vehicle used to warn other road users of the presence of an oversized vehicle/combination"
      ],
      "id": "en-pilot_vehicle-en-noun-ESD-prAR",
      "raw_glosses": [
        "(Australia, road transport) A vehicle used to warn other road users of the presence of an oversized vehicle/combination"
      ],
      "tags": [
        "Australia"
      ],
      "topics": [
        "road",
        "transport"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-pilot vehicle.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/5/5a/En-au-pilot_vehicle.ogg/En-au-pilot_vehicle.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/5/5a/En-au-pilot_vehicle.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "pilot vehicle"
}

{
  "forms": [
    {
      "form": "pilot vehicles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "pilot vehicle (plural pilot vehicles)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Australian English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with audio links",
        "en:Road transport"
      ],
      "glosses": [
        "A vehicle used to warn other road users of the presence of an oversized vehicle/combination"
      ],
      "raw_glosses": [
        "(Australia, road transport) A vehicle used to warn other road users of the presence of an oversized vehicle/combination"
      ],
      "tags": [
        "Australia"
      ],
      "topics": [
        "road",
        "transport"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-pilot vehicle.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/5/5a/En-au-pilot_vehicle.ogg/En-au-pilot_vehicle.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/5/5a/En-au-pilot_vehicle.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "pilot vehicle"
}