test.geojson

{
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "properties": {},
      "geometry": {
        "type": "LineString",
        "coordinates": [
          [
            -77.12127685546875,
            38.935911987561624
          ],
          [
            -77.04849243164062,
            38.99570671505043
          ],
          [
            -76.91253662109375,
            38.89317057287496
          ],
          [
            -77.0416259765625,
            38.79904887985135
          ]
        ]
      }
    }
  ]
}