{
    "extends": "berlin_tilezen_base.json",
    "styles": {
        "tilezen": [
            {
                "extends": "roadshield_highway",
                "description": "DEBUG roadshields - show all road shields",
                "when": ["all", ["==", ["get", "$layer"], "roads"], ["has", "ref"]],
                "minZoomLevel": 1,
                "technique": "line-marker",
                "label": "ref",
                "size": 9,
                "imageTexture": [
                    "concat",
                    "default-",
                    ["clamp", ["length", ["string", ["get", "ref"], ""]], 2, 6]
                ],
                "iconScale": 0.9,
                "priority": ["-", 37, ["length", ["get", "ref"]]],
                "minDistance": 100,
                "vAlignment": "Center",
                "hAlignment": "Center",
                "textIsOptional": false,
                "iconIsOptional": false,
                "textMayOverlap": false,
                "textReserveSpace": true,
                "iconMayOverlap": false,
                "iconReserveSpace": true,
                "renderTextDuringMovements": true,
                "color": "#000",
                "showOnMap": true
            }
        ]
    }
}