{
  "version": "v0.6-2026-10-30",
  "title": "Surrey, City of Adventure V0.6 — Open Roads",
  "status": "candidate; rendered-browser acceptance required before release",
  "retrieved": "2026-10-30",
  "parentSnapshot": "/surrey/v0.3-2026-10-30/manifest.json",
  "parentSha256": "e4cca4b8f8ace1296201f50f77c9bb1d0093365cbfdabeefabb91709a60cccdf",
  "preservedTransport": "/surrey/v0.5-2026-10-30/manifest.json",
  "bytes": 380826,
  "sha256": "53842626ecff589ef802e5d79a51862a6ee0697ddb296b2aa83aaff53ab1bc52",
  "connectivityReport": {
    "path": "connectivity-report.json",
    "bytes": 9071,
    "sha256": "71c8263dc5bc86c5440e487834b8c728059f4fc1bf6e484b34d79384d1f39b22"
  },
  "sourceReceipts": [
    {
      "name": "roads",
      "url": "https://gisservices.surrey.ca/arcgis/rest/services/OpenData/MapServer/126",
      "request": "https://gisservices.surrey.ca/arcgis/rest/services/OpenData/MapServer/126/query?f=geojson&where=1%3D1&geometry=-122.858%2C49.182%2C-122.84%2C49.195&geometryType=esriGeometryEnvelope&inSR=4326&spatialRel=esriSpatialRelIntersects&outSR=4326&outFields=%2A&returnGeometry=true&resultRecordCount=2000",
      "sha256": "815b720ae36b5b81d00b8fd4f3e8f0b97a9e130cee2580c27c42685ecdf6cd64",
      "bytes": 147473,
      "features": 199,
      "editingInfo": null,
      "currency": "Snapshot retrieved 2026-10-30; feature survey dates are not guaranteed current."
    },
    {
      "name": "road-surfaces",
      "request": "https://gisservices.surrey.ca/arcgis/rest/services/OpenData/MapServer/113/query?f=geojson&where=1%3D1&geometry=-122.858%2C49.182%2C-122.84%2C49.195&geometryType=esriGeometryEnvelope&inSR=4326&spatialRel=esriSpatialRelIntersects&outFields=%2A&outSR=4326&returnGeometry=true&resultRecordCount=2000",
      "retrieved": "2026-10-30T19:19:04.530365+00:00",
      "sha256": "11282a442026bfb37caa44765cf899b161c050f367d0d026159c235b4bc13a8f",
      "bytes": 711019,
      "features": 128,
      "licence": "https://opendata-surrey.hub.arcgis.com/pages/55089a19491a4fe59a41e059fd8af708"
    }
  ],
  "inheritedGeometry": [
    "road surfaces",
    "curbs",
    "medians",
    "building footprints",
    "walk cells"
  ],
  "projection": "Local equirectangular metres, x east and z south; inherited unchanged from the V0.3 snapshot.",
  "attribution": "Contains information licensed under the Open Government License – City of Surrey.",
  "licence": "https://opendata-surrey.hub.arcgis.com/pages/55089a19491a4fe59a41e059fd8af708",
  "processing": [
    "Verify raw checksums, complete feature counts and correspondence of all 199 source road coordinates.",
    "Intersect named road corridors with source pavement; subtract buildings, medians, non-Open surfaces, 0.15 m curb buffers and a 0.03 m boundary inset. Use a 2.35 m all-orientation inset for a 4.16 × 2.04 m compact.",
    "Keep the original-car component. Derive source-associated lattice paths at 0.5 m, using 0.25 m on the narrow original Central Avenue connector. Retain raw and filleted paths; minimum offline radius 4.2 m.",
    "Clip the final drive surface to accepted source corridors plus 18 m source junction neighbourhoods; this never adds pavement. Retain only the resulting polygon connected to the original car; remove detached clipping fragments.",
    "Validate full footprints and directed inter-edge turns with exact runtime geometry at 0.15 m spacing. Reject unsupported transitions; A* state includes incoming edge.",
    "Compute unique length with geometric unions, excluding duplicate paths and repeated routes.",
    "Validate all eight stops, safe foot exit, all outward routes and seven return routes to Surrey Central; require supported stop rejoining.",
    "Validate one closed 695.405 m traffic circuit; a second candidate circuit was rejected.",
    "Fictional University Drive workzone requires a connected 1,192.607 m alternative instead of the 761.217 m direct route."
  ],
  "tools": {
    "python": "Shapely 2.0.7; offline only",
    "node": "24; exact runtime geometry and routing modules",
    "derive": "projects/surrey/tools/derive_network.py",
    "validate": "projects/surrey/tools/validate_transport.mjs",
    "clip": "projects/surrey/tools/clip_network.py"
  },
  "summary": {
    "uniqueSourceRoadLengthM": 17154,
    "uniqueEdgePathLengthM": 17009,
    "sourceJunctions": 57,
    "drivableIntersections": 56,
    "componentNodes": 116,
    "componentEdges": 133,
    "acceptedTurns": 478,
    "reachableDirectedLegs": 204
  },
  "limitations": [
    "Road widths are inferred; retrieval date is not a survey date. This is game navigation, not real-world road access or legal parking advice.",
    "No private-lane shortcuts, invented pavement, bridge elevation or terrain datum assumptions.",
    "Source junction positions can be adjusted within 15 m on supported pavement. King George paths choose one consistent source-supported carriageway; not every physical lane or U-turn is represented.",
    "Only the compact footprint is supported. Curve sampling is geometric acceptance; ordinary-control browser acceptance remains required.",
    "Stops are on roads near landmarks, not necessarily pedestrian entrances; actual exit is checked again against nearby actors.",
    "Signals share a fictional 68-second cycle and traffic is bounded to selected routes.",
    "Terrain is flat. Existing SkyTrain is moving scenery; boarding remains unavailable.",
    "V0.3 geography and V0.5 transport are immutable; all changes are in this separately versioned snapshot."
  ]
}