{
    "key": "curve",
    "type": "combo",
    "strings": {
        "options": {
            "hairpin": "Hairpin/Switchback",
            "loop": "Loop (270 Degrees or More)"
        }
    },
    "label": "Type",
    "prerequisiteTag": {
        "key": "hazard",
        "value": "curve"
    }
}