"diamond lane" meaning in English

{
  "etymology_text": "Usually painted with a white diamond or lozenge.",
  "forms": [
    {
      "form": "diamond lanes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "diamond lane (plural diamond lanes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Canadian English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A freeway lane designated for sole use by high occupancy vehicles."
      ],
      "id": "en-diamond_lane-en-noun-Iz9wQGcR",
      "links": [
        [
          "Canada",
          "Canada"
        ],
        [
          "US",
          "American English"
        ],
        [
          "high occupancy vehicle",
          "high occupancy vehicle"
        ]
      ],
      "raw_glosses": [
        "(Canada, US) A freeway lane designated for sole use by high occupancy vehicles."
      ],
      "tags": [
        "Canada",
        "US"
      ]
    }
  ],
  "word": "diamond lane"
}

{
  "etymology_text": "Usually painted with a white diamond or lozenge.",
  "forms": [
    {
      "form": "diamond lanes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "diamond lane (plural diamond lanes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "American English",
        "Canadian English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns"
      ],
      "glosses": [
        "A freeway lane designated for sole use by high occupancy vehicles."
      ],
      "links": [
        [
          "Canada",
          "Canada"
        ],
        [
          "US",
          "American English"
        ],
        [
          "high occupancy vehicle",
          "high occupancy vehicle"
        ]
      ],
      "raw_glosses": [
        "(Canada, US) A freeway lane designated for sole use by high occupancy vehicles."
      ],
      "tags": [
        "Canada",
        "US"
      ]
    }
  ],
  "word": "diamond lane"
}