@openstreetmap/id-tagging-schema/data/presets/railway/subway.json

The OpenStreetMap tagging model used by the iD editor

{
    "icon": "temaki-subway",
    "fields": [
        "{railway/light_rail}"
    ],
    "moreFields": [
        "{railway/light_rail}"
    ],
    "geometry": [
        "line"
    ],
    "tags": {
        "railway": "subway"
    },
    "terms": [
        "metro",
        "transit",
        "underground railway"
    ],
    "name": "Subway Track"
}