@openstreetmap/id-tagging-schema/data/fields/crossing.json

The OpenStreetMap tagging model used by the iD editor

{
    "key": "crossing",
    "type": "combo",
    "label": "Type",
    "options": [
        "traffic_signals",
        "uncontrolled",
        "unmarked"
    ],
    "strings": {
        "options": {
            "traffic_signals": "Crossing With Traffic Signals",
            "uncontrolled": "Only Road Markings",
            "unmarked": "No Road Markings or Traffic Signals"
        }
    }
}