{ "ocl_version": "0.1.0", "name": "Ancienne Route de B\u00e9zaudun", "slug": "ancienne-route-de-bezaudun", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 45.08012303417104, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 854.0, "end_distance_m": 856.0, "start_elevation_m": 879.8392305727871, "end_elevation_m": 880.7408330334705, "min_gradient_pct": -25.05738768066408 }, { "window_m": 3.0, "max_gradient_pct": 38.96605327264145, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 853.0, "end_distance_m": 856.0, "start_elevation_m": 879.5718514352913, "end_elevation_m": 880.7408330334705, "min_gradient_pct": -17.01532725000258 }, { "window_m": 5.0, "max_gradient_pct": 31.156940676025897, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 851.0, "end_distance_m": 856.0, "start_elevation_m": 879.1829859996692, "end_elevation_m": 880.7408330334705, "min_gradient_pct": -7.683920132749336 }, { "window_m": 10.0, "max_gradient_pct": 26.15479624678187, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 846.0, "end_distance_m": 856.0, "start_elevation_m": 878.1253534087923, "end_elevation_m": 880.7408330334705, "min_gradient_pct": -2.1775506681115075 }, { "window_m": 20.0, "max_gradient_pct": 23.672399144783753, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 836.0, "end_distance_m": 856.0, "start_elevation_m": 876.0063532045137, "end_elevation_m": 880.7408330334705, "min_gradient_pct": 1.5985035016063875 }, { "window_m": 25.0, "max_gradient_pct": 22.367432055616973, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 832.0, "end_distance_m": 857.0, "start_elevation_m": 875.2222542717385, "end_elevation_m": 880.8141122856428, "min_gradient_pct": 2.2977862401644416 }, { "window_m": 50.0, "max_gradient_pct": 14.219130373464168, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 832.0, "end_distance_m": 882.0, "start_elevation_m": 875.2222542717385, "end_elevation_m": 882.3318194584706, "min_gradient_pct": 3.4496016495768345 }, { "window_m": 100.0, "max_gradient_pct": 12.017743509975276, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 832.0, "end_distance_m": 932.0, "start_elevation_m": 875.2222542717385, "end_elevation_m": 887.2399977817138, "min_gradient_pct": 4.268682332241042 } ], "shape": { "ascent_concentration": 0.385, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 39.0, "shape_class": "sustained" }, "length_m": 996.1122076783256, "start_elevation_m": 835.3997560449127, "end_elevation_m": 892.4397201054524, "endpoint_gain_m": 57.03996406053966, "overall_gradient_pct": 5.726258911481945, "accumulated_ascent_m": 58.25124067312299, "window_maxima": { "max_5m": { "gradient_pct": 31.156940676025897, "start_distance_m": 851.0, "end_distance_m": 856.0, "midpoint_distance_m": 853.5, "start_elevation_m": 879.1829859996692, "end_elevation_m": 880.7408330334705, "start_xy": [ 1029492.839805497, 6309515.109932168 ], "end_xy": [ 1029490.4168166486, 6309510.736246647 ] }, "max_10m": { "gradient_pct": 26.15479624678187, "start_distance_m": 846.0, "end_distance_m": 856.0, "midpoint_distance_m": 851.0, "start_elevation_m": 878.1253534087923, "end_elevation_m": 880.7408330334705, "start_xy": [ 1029495.4911603, 6309519.302473586 ], "end_xy": [ 1029490.4168166486, 6309510.736246647 ] }, "max_20m": { "gradient_pct": 23.672399144783753, "start_distance_m": 836.0, "end_distance_m": 856.0, "midpoint_distance_m": 846.0, "start_elevation_m": 876.0063532045137, "end_elevation_m": 880.7408330334705, "start_xy": [ 1029502.9060118352, 6309526.012166329 ], "end_xy": [ 1029490.4168166486, 6309510.736246647 ] }, "max_25m": { "gradient_pct": 22.367432055616973, "start_distance_m": 832.0, "end_distance_m": 857.0, "midpoint_distance_m": 844.5, "start_elevation_m": 875.2222542717385, "end_elevation_m": 880.8141122856428, "start_xy": [ 1029506.2255810878, 6309528.223963676 ], "end_xy": [ 1029489.9322188789, 6309509.861509543 ] }, "max_50m": { "gradient_pct": 14.219130373464168, "start_distance_m": 832.0, "end_distance_m": 882.0, "midpoint_distance_m": 857.0, "start_elevation_m": 875.2222542717385, "end_elevation_m": 882.3318194584706, "start_xy": [ 1029506.2255810878, 6309528.223963676 ], "end_xy": [ 1029486.9356376859, 6309485.243809507 ] }, "max_100m": { "gradient_pct": 12.017743509975276, "start_distance_m": 832.0, "end_distance_m": 932.0, "midpoint_distance_m": 882.0, "start_elevation_m": 875.2222542717385, "end_elevation_m": 887.2399977817138, "start_xy": [ 1029506.2255810878, 6309528.223963676 ], "end_xy": [ 1029475.2697512029, 6309494.230361406 ] } }, "window_minima": { "min_5m": { "gradient_pct": -7.683920132749336, "start_distance_m": 770.0, "end_distance_m": 775.0, "midpoint_distance_m": 772.5, "start_elevation_m": 872.7894243578837, "end_elevation_m": 872.4052283512463, "start_xy": [ 1029508.867375275, 6309472.887815017 ], "end_xy": [ 1029507.5310363112, 6309477.705211657 ] }, "min_10m": { "gradient_pct": -2.1775506681115075, "start_distance_m": 763.0, "end_distance_m": 773.0, "midpoint_distance_m": 768.0, "start_elevation_m": 872.4967196071948, "end_elevation_m": 872.2789645403836, "start_xy": [ 1029509.5046665594, 6309465.944431974 ], "end_xy": [ 1029508.0725474445, 6309475.780607564 ] }, "min_20m": { "gradient_pct": 1.5985035016063875, "start_distance_m": 762.0, "end_distance_m": 782.0, "midpoint_distance_m": 772.0, "start_elevation_m": 872.4501014845711, "end_elevation_m": 872.7698021848923, "start_xy": [ 1029509.5518358735, 6309464.945545065 ], "end_xy": [ 1029504.9155668227, 6309484.198232477 ] }, "min_25m": { "gradient_pct": 2.2977862401644416, "start_distance_m": 762.0, "end_distance_m": 787.0, "midpoint_distance_m": 774.5, "start_elevation_m": 872.4501014845711, "end_elevation_m": 873.0245480446122, "start_xy": [ 1029509.5518358735, 6309464.945545065 ], "end_xy": [ 1029503.7223877946, 6309489.007471639 ] }, "min_50m": { "gradient_pct": 3.4496016495768345, "start_distance_m": 0.0, "end_distance_m": 50.0, "midpoint_distance_m": 25.0, "start_elevation_m": 835.3997560449127, "end_elevation_m": 837.1245568697011, "start_xy": [ 1029944.049, 6308980.94 ], "end_xy": [ 1029926.2487339792, 6309026.5124536175 ] }, "min_100m": { "gradient_pct": 4.268682332241042, "start_distance_m": 680.0, "end_distance_m": 780.0, "midpoint_distance_m": 730.0, "start_elevation_m": 868.3823356324417, "end_elevation_m": 872.6510179646828, "start_xy": [ 1029503.0624994157, 6309385.02439376 ], "end_xy": [ 1029505.6628438195, 6309482.34308367 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 45.08012303417104, "start_distance_m": 854.0, "end_distance_m": 856.0, "midpoint_distance_m": 855.0, "start_elevation_m": 879.8392305727871, "end_elevation_m": 880.7408330334705, "start_xy": [ 1029491.3860121879, 6309512.485720855 ], "end_xy": [ 1029490.4168166486, 6309510.736246647 ] }, "max_3m": { "gradient_pct": 38.96605327264145, "start_distance_m": 853.0, "end_distance_m": 856.0, "midpoint_distance_m": 854.5, "start_elevation_m": 879.5718514352913, "end_elevation_m": 880.7408330334705, "start_xy": [ 1029491.8706099576, 6309513.36045796 ], "end_xy": [ 1029490.4168166486, 6309510.736246647 ] } }, "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": 0.006, "windows_resited": [], "windows_unresolved": [] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.194, "obstruction_max_height_m": 17.92, "flagged_windows_m": [ 2, 3, 5, 10, 20, 25, 50, 100 ] }, "excluded_ranges_m": [ [ 759.0, 764.0 ] ], "review": [], "extent": [ "may_continue_beyond_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_E1029-N6308_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E1029-N6309_0m5.tif" ], "calculated_at": "2026-09-17T02:33:44+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": [ "E1029-N6308", "E1029-N6309" ], "elevation_blocks": [ "21LHD8RP@2025-03-06" ], "ign_dalles": [ "LHD_FXX_1029_6309_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_1029_6310_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD8RP" ], "ign_editions": [ "2025-03-06" ], "ign_dsm_edition": { "LHD_FXX_1029_6309_MNT_O_0M50_LAMB93_IGN69": "2025-03-06", "LHD_FXX_1029_6310_MNT_O_0M50_LAMB93_IGN69": "2025-03-06" }, "climb_origin": "discovered", "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked", "carriageway": { "stations": 46, "stations_resolved": 46, "width_median_m": 5.12, "width_p10_m": 2.25, "width_min_m": 1.0, "width_max_m": 11.0, "bounded_share": 0.696, "unbounded_share": 0.304, "confidence_median": 0.698, "width_median_bounded_m": 5.12, "window_m": [ 832.0, 857.0 ], "width_at_max25_m": 2.25, "window_stations": 7, "single_track": true, "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": 46, "stations_resolved": 46, "width_median_m": 4.12, "width_p10_m": 0.75, "width_min_m": 0.5, "width_max_m": 10.75, "bounded_share": 0.978, "unbounded_share": 0.022, "confidence_median": 1.0, "width_median_bounded_m": 4.0, "window_m": [ 832.0, 857.0 ], "width_at_max25_m": 3.0, "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": "B\u00e9zaudun-les-Alpes", "county": "Alpes-Maritimes", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }