test/first-category.json

{
    "type": "overpass",
    "name": {
        "en": "First Category"
    },
    "query": {
        "16": [
            "(",
            "way[highway];",
            ")"
        ]
    },
    "feature": {
        "style": {
            "width": [
                "{% if tags.highway in [ 'footway', 'cycleway' ] %}",
                "1.5",
                "{% else %}",
                "4",
                "{% endif %}"
            ],
            "color": "#ff0000",
            "text": "{{ tags.name }}"
        }
    }
}