@openstreetmap/id-tagging-schema/data/fields/railway/signal/position.json

The OpenStreetMap tagging model used by the iD editor

{
    "key": "railway:signal:position",
    "type": "combo",
    "label": "Placement",
    "strings": {
        "options": {
            "left": "Left",
            "right": "Right",
            "in_track": "In the track",
            "bridge": "Overhead (attached to a gantry)",
            "overhead": "Overhead (attached to the catenary wire)"
        }
    },
    "autoSuggestions": false,
    "customValues": false
}