"route mile" meaning in English

{
  "forms": [
    {
      "form": "route miles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "route mile (plural route miles)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Rail transportation",
          "orig": "en:Rail transportation",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1952 January, “Notes and News: The Indian Regrouping Scheme”, in Railway Magazine, pages 62-63:",
          "text": "In June, 1950, therefore, the Railway Board prepared a tentative regrouping scheme, which contemplated the formation of six new railway systems, each serving a specific zone, and consisting of approximately 5,000 to 6,000 route-miles of line, the total mileage being 33,000.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A mile of track on a route between places."
      ],
      "id": "en-route_mile-en-noun-ctpRqrKg",
      "links": [
        [
          "rail transport",
          "rail transport"
        ]
      ],
      "raw_glosses": [
        "(rail transport) A mile of track on a route between places."
      ],
      "tags": [
        "plural",
        "usually"
      ],
      "topics": [
        "rail-transport",
        "railways",
        "transport"
      ]
    }
  ],
  "word": "route mile"
}

{
  "forms": [
    {
      "form": "route miles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "route mile (plural route miles)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Rail transportation"
      ],
      "examples": [
        {
          "ref": "1952 January, “Notes and News: The Indian Regrouping Scheme”, in Railway Magazine, pages 62-63:",
          "text": "In June, 1950, therefore, the Railway Board prepared a tentative regrouping scheme, which contemplated the formation of six new railway systems, each serving a specific zone, and consisting of approximately 5,000 to 6,000 route-miles of line, the total mileage being 33,000.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A mile of track on a route between places."
      ],
      "links": [
        [
          "rail transport",
          "rail transport"
        ]
      ],
      "raw_glosses": [
        "(rail transport) A mile of track on a route between places."
      ],
      "tags": [
        "plural",
        "usually"
      ],
      "topics": [
        "rail-transport",
        "railways",
        "transport"
      ]
    }
  ],
  "word": "route mile"
}