{
 "ocl_version": "0.1.0",
 "name": "Higher Woodway Road",
 "slug": "higher-woodway-road",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 35.94918950794295,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1041.0,
   "end_distance_m": 1043.0,
   "start_elevation_m": 181.63984292944656,
   "end_elevation_m": 182.35882671960542,
   "min_gradient_pct": -29.61121450123727
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 32.42455880712782,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1040.0,
   "end_distance_m": 1043.0,
   "start_elevation_m": 181.38608995539158,
   "end_elevation_m": 182.35882671960542,
   "min_gradient_pct": -20.81758411578581
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.119200248824654,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1039.0,
   "end_distance_m": 1044.0,
   "start_elevation_m": 181.27952989603892,
   "end_elevation_m": 182.58548990848016,
   "min_gradient_pct": -12.642036619844248
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.823251832762708,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 836.0,
   "end_distance_m": 846.0,
   "start_elevation_m": 163.0383576598646,
   "end_elevation_m": 165.32068284314087,
   "min_gradient_pct": -4.970144594155954
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.846128185165696,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 833.0,
   "end_distance_m": 853.0,
   "start_elevation_m": 162.39205390805017,
   "end_elevation_m": 166.7612795450833,
   "min_gradient_pct": -1.0850849889679637
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.629602208291885,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 828.0,
   "end_distance_m": 853.0,
   "start_elevation_m": 161.35387899301034,
   "end_elevation_m": 166.7612795450833,
   "min_gradient_pct": -0.8211129772919321
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.091969952003865,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 817.0,
   "end_distance_m": 867.0,
   "start_elevation_m": 159.2955638427539,
   "end_elevation_m": 169.34154881875583,
   "min_gradient_pct": 2.130088540841541
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.14790224221423,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 791.0,
   "end_distance_m": 891.0,
   "start_elevation_m": 155.11388194233237,
   "end_elevation_m": 173.2617841845466,
   "min_gradient_pct": 3.5597576477063626
  }
 ],
 "shape": {
  "ascent_concentration": 0.34,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 132.0,
  "shape_class": "sustained"
 },
 "length_m": 1397.5241198513406,
 "start_elevation_m": 78.88478014697286,
 "end_elevation_m": 207.63767862475544,
 "endpoint_gain_m": 128.7528984777826,
 "overall_gradient_pct": 9.212928539042208,
 "accumulated_ascent_m": 132.60325992922918,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.119200248824654,
   "start_distance_m": 1039.0,
   "end_distance_m": 1044.0,
   "midpoint_distance_m": 1041.5,
   "start_elevation_m": 181.27952989603892,
   "end_elevation_m": 182.58548990848016,
   "start_xy": [
    293854.99580034666,
    74958.70874002327
   ],
   "end_xy": [
    293850.12139583076,
    74959.82237141083
   ]
  },
  "max_10m": {
   "gradient_pct": 22.823251832762708,
   "start_distance_m": 836.0,
   "end_distance_m": 846.0,
   "midpoint_distance_m": 841.0,
   "start_elevation_m": 163.0383576598646,
   "end_elevation_m": 165.32068284314087,
   "start_xy": [
    293945.96935281344,
    74820.3095741242
   ],
   "end_xy": [
    293945.3063530593,
    74830.28757040689
   ]
  },
  "max_20m": {
   "gradient_pct": 21.846128185165696,
   "start_distance_m": 833.0,
   "end_distance_m": 853.0,
   "midpoint_distance_m": 843.0,
   "start_elevation_m": 162.39205390805017,
   "end_elevation_m": 166.7612795450833,
   "start_xy": [
    293946.1683786399,
    74817.31618359625
   ],
   "end_xy": [
    293944.84202282905,
    74837.27215248656
   ]
  },
  "max_25m": {
   "gradient_pct": 21.629602208291885,
   "start_distance_m": 828.0,
   "end_distance_m": 853.0,
   "midpoint_distance_m": 840.5,
   "start_elevation_m": 161.35387899301034,
   "end_elevation_m": 166.7612795450833,
   "start_xy": [
    293946.50037632114,
    74812.32721865848
   ],
   "end_xy": [
    293944.84202282905,
    74837.27215248656
   ]
  },
  "max_50m": {
   "gradient_pct": 20.091969952003865,
   "start_distance_m": 817.0,
   "end_distance_m": 867.0,
   "midpoint_distance_m": 842.0,
   "start_elevation_m": 159.2955638427539,
   "end_elevation_m": 169.34154881875583,
   "start_xy": [
    293947.25017180026,
    74801.35311818487
   ],
   "end_xy": [
    293943.9133698062,
    74851.24131717233
   ]
  },
  "max_100m": {
   "gradient_pct": 18.14790224221423,
   "start_distance_m": 791.0,
   "end_distance_m": 891.0,
   "midpoint_distance_m": 841.0,
   "start_elevation_m": 155.11388194233237,
   "end_elevation_m": 173.2617841845466,
   "start_xy": [
    293967.88651525375,
    74785.72121159249
   ],
   "end_xy": [
    293942.32100416435,
    74875.1884305072
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -12.642036619844248,
   "start_distance_m": 1048.0,
   "end_distance_m": 1053.0,
   "midpoint_distance_m": 1050.5,
   "start_elevation_m": 182.97748590912903,
   "end_elevation_m": 182.34538407813682,
   "start_xy": [
    293846.2219690754,
    74960.71370143199
   ],
   "end_xy": [
    293841.34756459703,
    74961.82733298407
   ]
  },
  "min_10m": {
   "gradient_pct": -4.970144594155954,
   "start_distance_m": 1048.0,
   "end_distance_m": 1058.0,
   "midpoint_distance_m": 1053.0,
   "start_elevation_m": 182.97748590912903,
   "end_elevation_m": 182.48047144971343,
   "start_xy": [
    293846.2219690754,
    74960.71370143199
   ],
   "end_xy": [
    293836.60811503883,
    74963.40004711787
   ]
  },
  "min_20m": {
   "gradient_pct": -1.0850849889679637,
   "start_distance_m": 938.0,
   "end_distance_m": 958.0,
   "midpoint_distance_m": 948.0,
   "start_elevation_m": 177.3823196035276,
   "end_elevation_m": 177.165302605734,
   "start_xy": [
    293939.2033307128,
    74922.08490831278
   ],
   "end_xy": [
    293933.20702359045,
    74941.02766657283
   ]
  },
  "min_25m": {
   "gradient_pct": -0.8211129772919321,
   "start_distance_m": 938.0,
   "end_distance_m": 963.0,
   "midpoint_distance_m": 950.5,
   "start_elevation_m": 177.3823196035276,
   "end_elevation_m": 177.17704135920462,
   "start_xy": [
    293939.2033307128,
    74922.08490831278
   ],
   "end_xy": [
    293929.3213629384,
    74943.13026301438
   ]
  },
  "min_50m": {
   "gradient_pct": 2.130088540841541,
   "start_distance_m": 1347.0,
   "end_distance_m": 1397.0,
   "midpoint_distance_m": 1372.0,
   "start_elevation_m": 206.56761134787862,
   "end_elevation_m": 207.6326556182994,
   "start_xy": [
    293581.0166222155,
    75094.37985340886
   ],
   "end_xy": [
    293542.40947474435,
    75126.10826912611
   ]
  },
  "min_100m": {
   "gradient_pct": 3.5597576477063626,
   "start_distance_m": 931.0,
   "end_distance_m": 1031.0,
   "midpoint_distance_m": 981.0,
   "start_elevation_m": 177.06461379428936,
   "end_elevation_m": 180.62437144199572,
   "start_xy": [
    293939.667370489,
    74915.10030684841
   ],
   "end_xy": [
    293862.7947042031,
    74956.92630119683
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 35.94918950794295,
   "start_distance_m": 1041.0,
   "end_distance_m": 1043.0,
   "midpoint_distance_m": 1042.0,
   "start_elevation_m": 181.63984292944656,
   "end_elevation_m": 182.35882671960542,
   "start_xy": [
    293853.0459285202,
    74959.1537107077
   ],
   "end_xy": [
    293851.09632331424,
    74959.59984912915
   ]
  },
  "max_3m": {
   "gradient_pct": 32.42455880712782,
   "start_distance_m": 1040.0,
   "end_distance_m": 1043.0,
   "midpoint_distance_m": 1041.5,
   "start_elevation_m": 181.38608995539158,
   "end_elevation_m": 182.35882671960542,
   "start_xy": [
    293854.02087296935,
    74958.93126277006
   ],
   "end_xy": [
    293851.09632331424,
    74959.59984912915
   ]
  }
 },
 "diagnostic_note": "Windows <=3 m are at raster-noise scale (1-sigma raster noise alone is roughly +/-7 pp at 2 m and +/-5 pp at 3 m on a 1 m DTM). Diagnostic use only: never a headline or ranking value.",
 "quality_summary": {
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.064,
   "obstruction_max_height_m": 18.1,
   "flagged_windows_m": []
  },
  "review": [],
  "extent": []
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "sample_interval_m": 1.0,
  "interpolation": "bilinear",
  "smoothing": "none",
  "gradient_windows_m": [
   5.0,
   10.0,
   20.0,
   25.0,
   50.0,
   100.0
  ],
  "diagnostic_windows_m": [
   2.0,
   3.0
  ],
  "elevation_crs": "EPSG:27700",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/england/bulk_dtm_1m/SX9070.tif",
   "data/cache/england/bulk_dtm_1m/SX9075.tif"
  ],
  "calculated_at": "2026-08-19T18:36:46+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/england-2026-08-12.osm.pbf",
  "osm_snapshot": "2026-08-12T20:21:46Z",
  "elevation_provider": "Environment Agency",
  "elevation_dataset": "EA LIDAR Composite DTM 1m (2022)",
  "elevation_licence": "Open Government Licence v3 \u2014 \u00a9 Environment Agency",
  "elevation_coverage_id": "13787b9a-26a4-4775-8523-806d13af58fc__Lidar_Composite_Elevation_DTM_1m",
  "elevation_tile_ids": [
   "SX9070.tif",
   "SX9075.tif"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 10.3% over 200 m (Terrain 50), gain 48.8 m over 489 m way. EXTENDED by graph walk: +4 segment(s) at base, +3 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. DEDUPE: absorbed 1 overlapping proposal(s): higher-woodway-road-2 ADOPTED (England launch slice 2026-08-16): clean-steep."
 },
 "area": {
  "place": "Teignmouth",
  "county": "Devon"
 }
}