{ "ocl_version": "0.1.0", "name": "Col de Pierre Carr\u00e9e from Les Carroz", "slug": "col-de-pierre-carree-from-les-carroz", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 26.69466255572388, "diagnostic": true, "flags": [ "structure_excluded" ], "start_distance_m": 8153.0, "end_distance_m": 8155.0, "start_elevation_m": 1675.7164550312646, "end_elevation_m": 1676.250348282379, "min_gradient_pct": -282.3117910766655, "suppressed_max_gradient_pct": 354.640193532191, "suppressed_location_m": [ 8120.0, 8122.0 ] }, { "window_m": 3.0, "max_gradient_pct": 19.703545501261033, "diagnostic": true, "flags": [ "structure_excluded" ], "start_distance_m": 8153.0, "end_distance_m": 8156.0, "start_elevation_m": 1675.7164550312646, "end_elevation_m": 1676.3075613963024, "min_gradient_pct": -221.5544316496865, "suppressed_max_gradient_pct": 275.9994033405671, "suppressed_location_m": [ 8120.0, 8123.0 ] }, { "window_m": 5.0, "max_gradient_pct": 12.571200250126822, "diagnostic": false, "flags": [ "structure_excluded" ], "start_distance_m": 8152.0, "end_distance_m": 8157.0, "start_elevation_m": 1675.7132578339488, "end_elevation_m": 1676.3418178464551, "min_gradient_pct": -146.91483637891452, "suppressed_max_gradient_pct": 190.87421656459355, "suppressed_location_m": [ 8119.0, 8124.0 ] }, { "window_m": 10.0, "max_gradient_pct": 10.328897003757902, "diagnostic": false, "flags": [ "structure_excluded" ], "start_distance_m": 2073.0, "end_distance_m": 2083.0, "start_elevation_m": 1250.8286666235263, "end_elevation_m": 1251.861556323902, "min_gradient_pct": -71.48448771794165, "suppressed_max_gradient_pct": 98.50244675800468, "suppressed_location_m": [ 8114.0, 8124.0 ] }, { "window_m": 20.0, "max_gradient_pct": 9.447899853696526, "diagnostic": false, "flags": [ "structure_excluded" ], "start_distance_m": 2070.0, "end_distance_m": 2090.0, "start_elevation_m": 1250.6014984556205, "end_elevation_m": 1252.4910784263598, "min_gradient_pct": -32.86886854855538, "suppressed_max_gradient_pct": 52.859436692750705, "suppressed_location_m": [ 8104.0, 8124.0 ] }, { "window_m": 25.0, "max_gradient_pct": 9.13779154200256, "diagnostic": false, "flags": [ "structure_excluded" ], "start_distance_m": 2065.0, "end_distance_m": 2090.0, "start_elevation_m": 1250.2066305408591, "end_elevation_m": 1252.4910784263598, "min_gradient_pct": -25.281596636923496, "suppressed_max_gradient_pct": 43.85316832990884, "suppressed_location_m": [ 8099.0, 8124.0 ] }, { "window_m": 50.0, "max_gradient_pct": 8.842713358088531, "diagnostic": false, "flags": [ "structure_excluded" ], "start_distance_m": 4276.0, "end_distance_m": 4326.0, "start_elevation_m": 1402.113891193804, "end_elevation_m": 1406.5352478728482, "min_gradient_pct": -9.829012310882717, "suppressed_max_gradient_pct": 25.279876584457725, "suppressed_location_m": [ 8074.0, 8124.0 ] }, { "window_m": 100.0, "max_gradient_pct": 8.43457025695784, "diagnostic": false, "flags": [ "structure_excluded" ], "start_distance_m": 4240.0, "end_distance_m": 4340.0, "start_elevation_m": 1399.2446163597047, "end_elevation_m": 1407.6791866166625, "min_gradient_pct": -4.684062305183488, "suppressed_max_gradient_pct": 15.571876862670024, "suppressed_location_m": [ 8024.0, 8124.0 ] } ], "shape": { "ascent_concentration": 0.271, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 28.0, "shape_class": "sustained" }, "length_m": 11065.85070459696, "start_elevation_m": 1109.9387768574256, "end_elevation_m": 1844.317156578114, "endpoint_gain_m": 734.3783797206884, "overall_gradient_pct": 6.63643852899275, "accumulated_ascent_m": 760.6875636996422, "window_maxima": { "max_5m": { "gradient_pct": 12.571200250126822, "start_distance_m": 8152.0, "end_distance_m": 8157.0, "midpoint_distance_m": 8154.5, "start_elevation_m": 1675.7132578339488, "end_elevation_m": 1676.3418178464551, "start_xy": [ 984631.4809907211, 6553831.253585122 ], "end_xy": [ 984635.9470486068, 6553829.005402086 ] }, "max_10m": { "gradient_pct": 10.328897003757902, "start_distance_m": 2073.0, "end_distance_m": 2083.0, "midpoint_distance_m": 2078.0, "start_elevation_m": 1250.8286666235263, "end_elevation_m": 1251.861556323902, "start_xy": [ 981645.9029325518, 6552656.878656348 ], "end_xy": [ 981644.2710134055, 6552647.155744133 ] }, "max_20m": { "gradient_pct": 9.447899853696526, "start_distance_m": 2070.0, "end_distance_m": 2090.0, "midpoint_distance_m": 2080.0, "start_elevation_m": 1250.6014984556205, "end_elevation_m": 1252.4910784263598, "start_xy": [ 981645.9439602452, 6552659.87837579 ], "end_xy": [ 981641.8601943383, 6552640.583990072 ] }, "max_25m": { "gradient_pct": 9.13779154200256, "start_distance_m": 2065.0, "end_distance_m": 2090.0, "midpoint_distance_m": 2077.5, "start_elevation_m": 1250.2066305408591, "end_elevation_m": 1252.4910784263598, "start_xy": [ 981644.586649383, 6552664.628860559 ], "end_xy": [ 981641.8601943383, 6552640.583990072 ] }, "max_50m": { "gradient_pct": 8.842713358088531, "start_distance_m": 4276.0, "end_distance_m": 4326.0, "midpoint_distance_m": 4301.0, "start_elevation_m": 1402.113891193804, "end_elevation_m": 1406.5352478728482, "start_xy": [ 983105.042191298, 6553221.528616978 ], "end_xy": [ 983152.8547604061, 6553236.015362976 ] }, "max_100m": { "gradient_pct": 8.43457025695784, "start_distance_m": 4240.0, "end_distance_m": 4340.0, "midpoint_distance_m": 4290.0, "start_elevation_m": 1399.2446163597047, "end_elevation_m": 1407.6791866166625, "start_xy": [ 983070.8950777295, 6553210.192407809 ], "end_xy": [ 983165.7292794951, 6553241.512012338 ] } }, "window_minima": { "min_5m": { "gradient_pct": -146.91483637891452, "start_distance_m": 8352.0, "end_distance_m": 8357.0, "midpoint_distance_m": 8354.5, "start_elevation_m": 1680.1849016073177, "end_elevation_m": 1672.839159788372, "start_xy": [ 984784.2190880374, 6553710.940854526 ], "end_xy": [ 984785.8553686613, 6553706.216236052 ] }, "min_10m": { "gradient_pct": -71.48448771794165, "start_distance_m": 8200.0, "end_distance_m": 8210.0, "midpoint_distance_m": 8205.0, "start_elevation_m": 1679.0770634356372, "end_elevation_m": 1671.928614663843, "start_xy": [ 984672.4634972903, 6553806.34150489 ], "end_xy": [ 984680.9054958175, 6553800.981322884 ] }, "min_20m": { "gradient_pct": -32.86886854855538, "start_distance_m": 8337.0, "end_distance_m": 8357.0, "midpoint_distance_m": 8347.0, "start_elevation_m": 1679.412933498083, "end_elevation_m": 1672.839159788372, "start_xy": [ 984779.3634807401, 6553725.133214364 ], "end_xy": [ 984785.8553686613, 6553706.216236052 ] }, "min_25m": { "gradient_pct": -25.281596636923496, "start_distance_m": 8332.0, "end_distance_m": 8357.0, "midpoint_distance_m": 8344.5, "start_elevation_m": 1679.1595589476028, "end_elevation_m": 1672.839159788372, "start_xy": [ 984777.267888673, 6553729.672480769 ], "end_xy": [ 984785.8553686613, 6553706.216236052 ] }, "min_50m": { "gradient_pct": -9.829012310882717, "start_distance_m": 8315.0, "end_distance_m": 8365.0, "midpoint_distance_m": 8340.0, "start_elevation_m": 1678.1893207909807, "end_elevation_m": 1673.2748146355393, "start_xy": [ 984768.800039824, 6553744.3644784205 ], "end_xy": [ 984788.5189501797, 6553698.672673664 ] }, "min_100m": { "gradient_pct": -4.684062305183488, "start_distance_m": 8173.0, "end_distance_m": 8273.0, "midpoint_distance_m": 8223.0, "start_elevation_m": 1677.129585176664, "end_elevation_m": 1672.4455228714805, "start_xy": [ 984649.6881990992, 6553820.842739055 ], "end_xy": [ 984735.4720652576, 6553769.56555494 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 26.69466255572388, "start_distance_m": 8153.0, "end_distance_m": 8155.0, "midpoint_distance_m": 8154.0, "start_elevation_m": 1675.7164550312646, "end_elevation_m": 1676.250348282379, "start_xy": [ 984632.3742022983, 6553830.803948514 ], "end_xy": [ 984634.1606254525, 6553829.9046753 ] }, "max_3m": { "gradient_pct": 19.703545501261033, "start_distance_m": 8153.0, "end_distance_m": 8156.0, "midpoint_distance_m": 8154.5, "start_elevation_m": 1675.7164550312646, "end_elevation_m": 1676.3075613963024, "start_xy": [ 984632.3742022983, 6553830.803948514 ], "end_xy": [ 984635.0538370297, 6553829.455038693 ] } }, "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": { "structure_suppression": { "masked_fraction": 0.009, "windows_resited": [ 2.0, 3.0, 5.0, 10.0, 20.0, 25.0, 50.0, 100.0 ], "windows_unresolved": [] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.007, "obstruction_max_height_m": 9.14, "flagged_windows_m": [] }, "excluded_ranges_m": [ [ 5183.0, 5222.0 ], [ 8117.0, 8125.0 ], [ 8199.0, 8208.0 ], [ 8265.0, 8281.0 ], [ 8348.0, 8373.0 ] ], "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:2154", "elevation_resolution_m": 0.5, "elevation_tiles": [ "data/cache/fr/ign-lidarhd_dtm_E981-N6552_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E981-N6553_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E982-N6552_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E982-N6553_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E983-N6552_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E983-N6553_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E983-N6554_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E984-N6552_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E984-N6553_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E984-N6554_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E985-N6552_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E985-N6553_0m5.tif" ], "calculated_at": "2026-09-17T02:00:12+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": [ "E981-N6552", "E981-N6553", "E982-N6552", "E982-N6553", "E983-N6552", "E983-N6553", "E983-N6554", "E984-N6552", "E984-N6553", "E984-N6554", "E985-N6552", "E985-N6553" ], "elevation_blocks": [ "21LHD5QK2@2025-06-13" ], "ign_dalles": [ "LHD_FXX_0981_6553_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0981_6554_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0982_6553_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0982_6554_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0983_6553_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0983_6554_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0983_6555_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0984_6553_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0984_6554_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0984_6555_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0985_6553_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0985_6554_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD5QK2" ], "ign_editions": [ "2025-06-13" ], "ign_dsm_edition": { "LHD_FXX_0981_6553_MNT_O_0M50_LAMB93_IGN69": "2025-06-13", "LHD_FXX_0981_6554_MNT_O_0M50_LAMB93_IGN69": "2025-06-13", "LHD_FXX_0982_6553_MNT_O_0M50_LAMB93_IGN69": "2025-06-13", "LHD_FXX_0982_6554_MNT_O_0M50_LAMB93_IGN69": "2025-06-13", "LHD_FXX_0983_6553_MNT_O_0M50_LAMB93_IGN69": "2025-06-13", "LHD_FXX_0983_6554_MNT_O_0M50_LAMB93_IGN69": "2025-06-13", "LHD_FXX_0983_6555_MNT_O_0M50_LAMB93_IGN69": "2025-06-13", "LHD_FXX_0984_6553_MNT_O_0M50_LAMB93_IGN69": "2025-06-13", "LHD_FXX_0984_6554_MNT_O_0M50_LAMB93_IGN69": "2025-06-13", "LHD_FXX_0984_6555_MNT_O_0M50_LAMB93_IGN69": "2025-06-13", "LHD_FXX_0985_6553_MNT_O_0M50_LAMB93_IGN69": "2025-06-13", "LHD_FXX_0985_6554_MNT_O_0M50_LAMB93_IGN69": "2025-06-13" }, "climb_origin": "named-pass", "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked", "carriageway": { "stations": 448, "stations_resolved": 448, "width_median_m": 8.5, "width_p10_m": 7.0, "width_min_m": 2.25, "width_max_m": 12.0, "bounded_share": 0.056, "unbounded_share": 0.944, "confidence_median": 0.0, "width_median_bounded_m": 9.0, "window_m": [ 2065.0, 2090.0 ], "width_at_max25_m": 10.5, "window_stations": 6, "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": 448, "stations_resolved": 448, "width_median_m": 11.0, "width_p10_m": 9.25, "width_min_m": 1.0, "width_max_m": 12.0, "bounded_share": 0.185, "unbounded_share": 0.815, "confidence_median": 0.0, "width_median_bounded_m": 9.5, "window_m": [ 2065.0, 2090.0 ], "width_at_max25_m": 12.0, "window_stations": 6, "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": "Ar\u00e2ches-la-Frasse", "county": "Haute-Savoie", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }