abstreet/data/hints.json

{
  "hints": [
    {
      "MergeRoad": {
        "pt1": {
          "longitude": -122.307363,
          "latitude": 47.6396139
        },
        "pt2": {
          "longitude": -122.3003583,
          "latitude": 47.6395231
        }
      }
    },
    {
      "MergeRoad": {
        "pt1": {
          "longitude": -122.3021482,
          "latitude": 47.6424539
        },
        "pt2": {
          "longitude": -122.3028722,
          "latitude": 47.643026
        }
      }
    }
  ],
  "parking_overrides": []
}