{
    "type": "overpass",
    "name": {
        "en": "Railway gauge"
    },
    "query": {
        "11": "way[railway=rail][railway!~'^(platform|abandoned|disused|station|proposed|subway_entrance)$'][usage~'^(main|branch)$'];",
        "14": "way[railway~'^(disused|construction|funicular|light_rail|miniature|monorail|narrow_gauge|preserved|rail|subway|tram)$'];"
    },
    "feature": {
        "pre": [
            "{% set gauges = tags.gauge|split(';')|sort|reverse %}",
            "{% set width = max(3, 3 / map.metersPerPixel) %}"
        ],
        "title": "{% if tags.ref %}{{ localizedTag(tags, 'ref') }} - {% endif %}{{ localizedTag(tags, 'name')|default(localizedTag(tags, 'operator'))|default(trans('unnamed')) }}",
        "description": "{{ tags.gauge|default(trans('unknown'))|enumerate }}",
        "body": [
            "{{ tagTrans('railway', tags.railway) }}<br/>",
            "{% if tags.operator %}{{ keyTrans('operator') }}: {{ localizedTag(tags, 'operator') }}<br>{% endif %}",
            "{% if tags.usage %}{{ keyTrans('usage') }}: {{ tagTrans('usage', tags.usage)|default(trans('unknown')) }}<br/>{% endif %}",
            "{% if tags.service %}{{ keyTrans('service') }}: {{ tagTrans('service', tags.service ) }}<br/>{% endif %}",
            "{{ keyTrans('gauge') }}: {{ tags.gauge|default(trans('unknown'))|enumerate }}<br/>",
            "{% if tags.electrified == 'no' %}{{ keyTrans('electrified') }}: {{ tagTrans('electrified', 'no') }}{% elseif tags.electrified %}{{ keyTrans('electrified') }}: {{ tagTrans('electrified', tags.electrified) }}, {{ keyTrans('voltage') }}: {{ tags.voltage|default(trans('unknown')) }}, {{ keyTrans('frequency') }}: {{ tags.frequency|default(trans('unknown')) }}<br/>{% endif %}"
        ],
        "markerSymbol": null,
        "listMarkerSymbol": "line",
        "styles": "{% if gauges|length < 2 %}default{% else %}{% for i, v in gauges %}{% if i != 0 %},{% endif %}gauge{{ i }}{% endfor %}{% endif %}{% if gauges|length > 0 and map.zoom >= 18 %},rail{% for i, v in gauges %},rail{{ i }}{% endfor %}{% endif %}",
        "style": {
            "width": "{{ width }}",
            "pane": "casing",
            "color": "{% if tags.gauge %}{% if not tags.gauge|matches('^\\d+$') %}#ff0000{% else %}{{ colorInterpolate([ '#00ff00', '#0000ff' ], tags.gauge / 2000) }}{% endif %}{% else %}#404040{% endif %}"
        },
        "style:rail": {
            "width": "1",
            "color": "#ffffff",
            "offset": "{{ gauges[0] / -2000 }}m"
        },
        "style:gauge0": {
            "width": "{{ width }}",
            "pane": "casing",
            "lineCap": "butt",
            "color": "{% if not gauges[0]|matches('^[0-9]+$') %}#ff0000{% else %}{{ colorInterpolate([ '#00ff00', '#0000ff' ], gauges[0] / 2000) }}{% endif %}",
            "dashArray": "5,{{ (gauges|length - 1) * 5 }}"
        },
        "style:rail0": {
            "width": "1",
            "color": "#ffffff",
            "offset": "{{ gauges[0] / 2000 }}m"
        },
        "style:gauge1": {
            "width": "{{ width }}",
            "pane": "casing",
            "lineCap": "butt",
            "color": "{% if not gauges[1]|matches('^[0-9]+$') %}#ff0000{% else %}{{ colorInterpolate([ '#00ff00', '#0000ff' ], gauges[1] / 2000) }}{% endif %}",
            "dashArray": "5,{{ (gauges|length - 1) * 5 }}",
            "dashOffset": "5"
        },
        "style:rail1": {
            "width": "1",
            "color": "#ffffff",
            "offset": "{{ gauges[0] / -2000 + gauges[1] / 1000 }}m"
        },
        "style:gauge2": {
            "width": "{{ width }}",
            "pane": "casing",
            "lineCap": "butt",
            "color": "{% if not gauges[2]|matches('^\\d+$') %}#ff0000{% else %}{{ colorInterpolate([ '#00ff00', '#0000ff' ], gauges[2] / 2000) }}{% endif %}",
            "dashArray": "5,{{ (gauges|length - 1) * 5 }}",
            "dashOffset": "10"
        },
        "style:rail2": {
            "width": "1",
            "color": "#ffffff",
            "offset": "{{ gauges[0] / -2000 + gauges[2] / 1000 }}m"
        },
        "style:gauge3": {
            "width": "{{ width }}",
            "pane": "casing",
            "lineCap": "butt",
            "color": "{% if not gauges[3]|matches('^\\d+$') %}#ff0000{% else %}{{ colorInterpolate([ '#00ff00', '#0000ff' ], gauges[3] / 2000) }}{% endif %}",
            "dashArray": "5,{{ (gauges|length - 1) * 5 }}",
            "dashOffset": "15"
        },
        "style:rail3": {
            "width": "1",
            "color": "#ffffff",
            "offset": "{{ gauges[0] / -2000 + gauges[3] / 1000 }}m"
        }
    },
    "info": [
        "<table>",
        "  {% set color = '#ff0000' %}",
        "  <tr>",
        "    <td>{{ markerLine({ 'width': 3, 'color': color })|raw }}</td>",
        "    <td>{{ trans('illegal value') }}</td>",
        "  </tr>",
        "  {% set color = '#404040' %}",
        "  <tr>",
        "    <td>{{ markerLine({ 'width': 3, 'color': color })|raw }}</td>",
        "    <td>{{ trans('unknown') }}</td>",
        "  </tr>",
        "{% for i in range(0, 1800, 250) %}",
        "  {% set color = colorInterpolate([ '#00ff00', '#0000ff' ], i / 2000) %}",
        "  <tr>",
        "    <td>{{ markerLine({ 'width': 3, 'color': color })|raw }}</td>",
        "    <td>{{ i }}mm</td>",
        "  </tr>",
        "{% endfor %}",
        "  <tr>",
        "    <td>{{ markerLine({ 'width': 3, 'color': '#0000ff' })|raw }}</td>",
        "    <td>>2000mm</td>",
        "  </tr>",
        "</table>"
    ]
}