{ "ocl_version": "0.1.0", "name": "Discovered lane (45.2923, 6.8210)", "slug": "discovered-lane-45-2923-6-8210", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 31.59410992332141, "diagnostic": true, "flags": [ "texture_excluded" ], "start_distance_m": 6072.0, "end_distance_m": 6074.0, "start_elevation_m": 1925.681872057889, "end_elevation_m": 1926.3137542563554, "min_gradient_pct": -42.01558555827205, "suppressed_max_gradient_pct": 35.23956580016829, "suppressed_location_m": [ 5769.0, 5771.0 ] }, { "window_m": 3.0, "max_gradient_pct": 28.158432364754542, "diagnostic": true, "flags": [ "texture_excluded" ], "start_distance_m": 6071.0, "end_distance_m": 6074.0, "start_elevation_m": 1925.4690012854128, "end_elevation_m": 1926.3137542563554, "min_gradient_pct": -37.120093744882375, "suppressed_max_gradient_pct": 33.92020243368279, "suppressed_location_m": [ 5770.0, 5773.0 ] }, { "window_m": 5.0, "max_gradient_pct": 21.87403679828094, "diagnostic": false, "flags": [ "texture_excluded" ], "start_distance_m": 6069.0, "end_distance_m": 6074.0, "start_elevation_m": 1925.2200524164414, "end_elevation_m": 1926.3137542563554, "min_gradient_pct": -24.657079563621664, "suppressed_max_gradient_pct": 31.776836195317628, "suppressed_location_m": [ 5768.0, 5773.0 ] }, { "window_m": 10.0, "max_gradient_pct": 16.478338210542915, "diagnostic": false, "flags": [ "texture_excluded" ], "start_distance_m": 6064.0, "end_distance_m": 6074.0, "start_elevation_m": 1924.6659204353011, "end_elevation_m": 1926.3137542563554, "min_gradient_pct": -15.39866127029427, "suppressed_max_gradient_pct": 25.959246350241756, "suppressed_location_m": [ 5766.0, 5776.0 ] }, { "window_m": 20.0, "max_gradient_pct": 14.329102841627446, "diagnostic": false, "flags": [ "texture_excluded" ], "start_distance_m": 6054.0, "end_distance_m": 6074.0, "start_elevation_m": 1923.44793368803, "end_elevation_m": 1926.3137542563554, "min_gradient_pct": -5.657209770984082, "suppressed_max_gradient_pct": 17.951759924289945, "suppressed_location_m": [ 5758.0, 5778.0 ] }, { "window_m": 25.0, "max_gradient_pct": 13.661370577615344, "diagnostic": false, "flags": [ "texture_excluded" ], "start_distance_m": 6049.0, "end_distance_m": 6074.0, "start_elevation_m": 1922.8984116119516, "end_elevation_m": 1926.3137542563554, "min_gradient_pct": -5.552696914493936, "suppressed_max_gradient_pct": 15.26954499279418, "suppressed_location_m": [ 5753.0, 5778.0 ] }, { "window_m": 50.0, "max_gradient_pct": 12.70367597763061, "diagnostic": false, "flags": [], "start_distance_m": 3804.0, "end_distance_m": 3854.0, "start_elevation_m": 1718.2200917739565, "end_elevation_m": 1724.5719297627718, "min_gradient_pct": -5.2049547074993825 }, { "window_m": 100.0, "max_gradient_pct": 11.867535332047055, "diagnostic": false, "flags": [], "start_distance_m": 4368.0, "end_distance_m": 4468.0, "start_elevation_m": 1777.7204465073673, "end_elevation_m": 1789.5879818394144, "min_gradient_pct": -4.90454943766963 } ], "shape": { "ascent_concentration": 0.271, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 147.0, "shape_class": "sustained" }, "length_m": 7169.858443162636, "start_elevation_m": 1388.9712976445273, "end_elevation_m": 2001.1370701103585, "endpoint_gain_m": 612.1657724658312, "overall_gradient_pct": 8.538045448437108, "accumulated_ascent_m": 620.3757543578395, "window_maxima": { "max_5m": { "gradient_pct": 21.87403679828094, "start_distance_m": 6069.0, "end_distance_m": 6074.0, "midpoint_distance_m": 6071.5, "start_elevation_m": 1925.2200524164414, "end_elevation_m": 1926.3137542563554, "start_xy": [ 1000387.0421526718, 6474802.068289295 ], "end_xy": [ 1000390.5632369473, 6474805.618214016 ] }, "max_10m": { "gradient_pct": 16.478338210542915, "start_distance_m": 6064.0, "end_distance_m": 6074.0, "midpoint_distance_m": 6069.0, "start_elevation_m": 1924.6659204353011, "end_elevation_m": 1926.3137542563554, "start_xy": [ 1000383.5210683964, 6474798.518364574 ], "end_xy": [ 1000390.5632369473, 6474805.618214016 ] }, "max_20m": { "gradient_pct": 14.329102841627446, "start_distance_m": 6054.0, "end_distance_m": 6074.0, "midpoint_distance_m": 6064.0, "start_elevation_m": 1923.44793368803, "end_elevation_m": 1926.3137542563554, "start_xy": [ 1000376.4788998454, 6474791.418515132 ], "end_xy": [ 1000390.5632369473, 6474805.618214016 ] }, "max_25m": { "gradient_pct": 13.661370577615344, "start_distance_m": 6049.0, "end_distance_m": 6074.0, "midpoint_distance_m": 6061.5, "start_elevation_m": 1922.8984116119516, "end_elevation_m": 1926.3137542563554, "start_xy": [ 1000372.95781557, 6474787.868590411 ], "end_xy": [ 1000390.5632369473, 6474805.618214016 ] }, "max_50m": { "gradient_pct": 12.70367597763061, "start_distance_m": 3804.0, "end_distance_m": 3854.0, "midpoint_distance_m": 3829.0, "start_elevation_m": 1718.2200917739565, "end_elevation_m": 1724.5719297627718, "start_xy": [ 999815.6812674123, 6474020.751890505 ], "end_xy": [ 999801.5180494114, 6474067.405002126 ] }, "max_100m": { "gradient_pct": 11.867535332047055, "start_distance_m": 4368.0, "end_distance_m": 4468.0, "midpoint_distance_m": 4418.0, "start_elevation_m": 1777.7204465073673, "end_elevation_m": 1789.5879818394144, "start_xy": [ 999979.7319595221, 6473906.797547859 ], "end_xy": [ 999979.5402640718, 6473807.436054147 ] } }, "window_minima": { "min_5m": { "gradient_pct": -24.657079563621664, "start_distance_m": 5783.0, "end_distance_m": 5788.0, "midpoint_distance_m": 5785.5, "start_elevation_m": 1903.0038885592637, "end_elevation_m": 1901.7710345810826, "start_xy": [ 1000195.9633914288, 6474606.306850499 ], "end_xy": [ 1000199.5327653114, 6474609.755450494 ] }, "min_10m": { "gradient_pct": -15.39866127029427, "start_distance_m": 5779.0, "end_distance_m": 5789.0, "midpoint_distance_m": 5784.0, "start_elevation_m": 1903.2773092613388, "end_elevation_m": 1901.7374431343094, "start_xy": [ 1000192.8457049772, 6474603.800851458 ], "end_xy": [ 1000200.130699751, 6474610.5569955055 ] }, "min_20m": { "gradient_pct": -5.657209770984082, "start_distance_m": 7139.0, "end_distance_m": 7159.0, "midpoint_distance_m": 7149.0, "start_elevation_m": 2002.5443878036208, "end_elevation_m": 2001.412945849424, "start_xy": [ 1000870.4486613412, 6475661.112667336 ], "end_xy": [ 1000884.822779, 6475675.00861174 ] }, "min_25m": { "gradient_pct": -5.552696914493936, "start_distance_m": 7134.0, "end_distance_m": 7159.0, "midpoint_distance_m": 7146.5, "start_elevation_m": 2002.8011200780475, "end_elevation_m": 2001.412945849424, "start_xy": [ 1000866.9071790178, 6475657.583091873 ], "end_xy": [ 1000884.822779, 6475675.00861174 ] }, "min_50m": { "gradient_pct": -5.2049547074993825, "start_distance_m": 7108.0, "end_distance_m": 7158.0, "midpoint_distance_m": 7133.0, "start_elevation_m": 2004.0602382922755, "end_elevation_m": 2001.4577609385258, "start_xy": [ 1000846.8901916125, 6475641.217220649 ], "end_xy": [ 1000884.0718222674, 6475674.348260329 ] }, "min_100m": { "gradient_pct": -4.90454943766963, "start_distance_m": 7064.0, "end_distance_m": 7164.0, "midpoint_distance_m": 7114.0, "start_elevation_m": 2006.1268550021828, "end_elevation_m": 2001.2223055645131, "start_xy": [ 1000807.113679667, 6475624.482177778 ], "end_xy": [ 1000888.5775626637, 6475678.310368793 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 31.59410992332141, "start_distance_m": 6072.0, "end_distance_m": 6074.0, "midpoint_distance_m": 6073.0, "start_elevation_m": 1925.681872057889, "end_elevation_m": 1926.3137542563554, "start_xy": [ 1000389.1548032372, 6474804.198244127 ], "end_xy": [ 1000390.5632369473, 6474805.618214016 ] }, "max_3m": { "gradient_pct": 28.158432364754542, "start_distance_m": 6071.0, "end_distance_m": 6074.0, "midpoint_distance_m": 6072.5, "start_elevation_m": 1925.4690012854128, "end_elevation_m": 1926.3137542563554, "start_xy": [ 1000388.4505863821, 6474803.488259183 ], "end_xy": [ 1000390.5632369473, 6474805.618214016 ] } }, "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": { "texture_suppression": { "masked_fraction": 0.004, "windows_resited": [ 2.0, 3.0, 5.0, 10.0, 20.0, 25.0 ], "windows_unresolved": [] }, "texture_windows": { "rounds": 1, "windows_masked": [ { "window_m": 25.0, "start_m": 5753.0, "end_m": 5778.0, "raw_pct": 15.27, "reason": "spike" }, { "window_m": 20.0, "start_m": 5758.0, "end_m": 5778.0, "raw_pct": 17.95, "reason": "spike" }, { "window_m": 10.0, "start_m": 5766.0, "end_m": 5776.0, "raw_pct": 25.96, "reason": "short-step" } ], "advisory": [], "unresolved": [] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.025, "obstruction_max_height_m": 18.44, "flagged_windows_m": [] }, "excluded_ranges_m": [ [ 5751.0, 5780.0 ] ], "review": [], "extent": [ "may_start_earlier", "descends_at_end" ] }, "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:2154", "elevation_resolution_m": 0.5, "elevation_tiles": [ "data/cache/fr/ign-lidarhd_dtm_E999-N6472_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E999-N6473_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E999-N6474_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E1000-N6473_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E1000-N6474_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E1000-N6475_0m5.tif" ], "calculated_at": "2026-09-17T02:42:31+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-alps4.osm.pbf", "osm_snapshot": "", "run_id": "fr-alps4", "elevation_provider": "IGN LiDAR HD MNT 0.5 m", "elevation_licence": "Licence Ouverte / Open Licence 2.0 (Etalab) \u2014 \u00a9 IGN, LiDAR HD (MNT/MNS), data.geopf.fr; reproduction autoris\u00e9e avec mention de la source et de la date", "elevation_dataset": "LiDAR HD \u2014 MNT (sol) et MNS (surface), 0,50 m (Institut national de l'information g\u00e9ographique et foresti\u00e8re), RGF93 / Lambert-93 EPSG:2154, altitudes IGN69", "elevation_vertical_datum": "IGN69", "elevation_tile_ids": [ "E999-N6472", "E999-N6473", "E999-N6474", "E1000-N6473", "E1000-N6474", "E1000-N6475" ], "elevation_blocks": [ "21LHD6RM@2025-06-06" ], "ign_dalles": [ "LHD_FXX_0999_6473_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0999_6474_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0999_6475_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_1000_6474_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_1000_6475_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_1000_6476_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD6RM" ], "ign_editions": [ "2025-06-06" ], "ign_dsm_edition": { "LHD_FXX_0999_6473_MNT_O_0M50_LAMB93_IGN69": "2025-06-06", "LHD_FXX_0999_6474_MNT_O_0M50_LAMB93_IGN69": "2025-06-06", "LHD_FXX_0999_6475_MNT_O_0M50_LAMB93_IGN69": "2025-06-06", "LHD_FXX_1000_6474_MNT_O_0M50_LAMB93_IGN69": "2025-06-06", "LHD_FXX_1000_6475_MNT_O_0M50_LAMB93_IGN69": "2025-06-06", "LHD_FXX_1000_6476_MNT_O_0M50_LAMB93_IGN69": "2025-06-06" }, "climb_origin": "discovered", "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked", "carriageway": { "stations": 293, "stations_resolved": 293, "width_median_m": 6.0, "width_p10_m": 4.25, "width_min_m": 0.5, "width_max_m": 10.0, "bounded_share": 0.481, "unbounded_share": 0.519, "confidence_median": 0.0, "width_median_bounded_m": 5.75, "window_m": [ 6049.0, 6074.0 ], "width_at_max25_m": 1.5, "window_stations": 7, "single_track": false, "single_track_rule": "PROVISIONAL (2026-09-15): width_p10_m <= 3.0 m with bounded_share >= 0.6; recorded, not a rule", "status": "ok", "source": "dtm", "station_m": 25.0, "window_station_m": 5.0, "halfwidth_m": 6.0, "step_m": 0.25, "level_tol_m": 0.12, "break_min_m": 0.3, "stations_failed": 0, "hedge_to_hedge": { "stations": 293, "stations_resolved": 293, "width_median_m": 7.0, "width_p10_m": 3.0, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.85, "unbounded_share": 0.15, "confidence_median": 1.0, "width_median_bounded_m": 6.75, "window_m": [ 6049.0, 6074.0 ], "width_at_max25_m": 3.25, "window_stations": 7, "status": "ok", "source": "dsm", "station_m": 25.0, "window_station_m": 5.0, "halfwidth_m": 6.0, "step_m": 0.25, "level_tol_m": 0.5, "break_min_m": 0.3, "stations_failed": 0 } }, "license": "ODbL-1.0", "license_url": "https://howsteep.org/licensing" }, "area": { "place": "Val-Cenis", "county": "Savoie", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }