data/summary.json

{
 "land_source": "geoBoundaries (OSM-derived)",
 "towns": 2044,
 "ferries": 277,
 "overlays": {
  "hsr": {
   "lines": 70,
   "km": 2074
  },
  "rail": {
   "lines": 1051,
   "km": 15878
  },
  "motorway": {
   "lines": 329,
   "km": 14927
  },
  "ferry": {
   "lines": 277,
   "km": 14393
  },
  "roman": {
   "lines": 206,
   "km": 10566
  }
 }
}