{ "ocl_version": "0.1.0", "name": "Discovered lane (45.7835, 6.6372)", "slug": "discovered-lane-45-7835-6-6372", "confidence": "A", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 27.825375936754426, "diagnostic": true, "flags": [], "start_distance_m": 5402.0, "end_distance_m": 5404.0, "start_elevation_m": 1595.1475622222943, "end_elevation_m": 1595.7040697410293, "min_gradient_pct": -22.45558724654302 }, { "window_m": 3.0, "max_gradient_pct": 25.286260420618117, "diagnostic": true, "flags": [], "start_distance_m": 5403.0, "end_distance_m": 5406.0, "start_elevation_m": 1595.3558450291648, "end_elevation_m": 1596.1144328417834, "min_gradient_pct": -17.942318009583385 }, { "window_m": 5.0, "max_gradient_pct": 23.20815443497395, "diagnostic": false, "flags": [], "start_distance_m": 5401.0, "end_distance_m": 5406.0, "start_elevation_m": 1594.9540251200347, "end_elevation_m": 1596.1144328417834, "min_gradient_pct": -12.295012183044491 }, { "window_m": 10.0, "max_gradient_pct": 20.611325141760517, "diagnostic": false, "flags": [], "start_distance_m": 5475.0, "end_distance_m": 5485.0, "start_elevation_m": 1606.0152211767356, "end_elevation_m": 1608.0763536909117, "min_gradient_pct": -1.4589622126527502 }, { "window_m": 20.0, "max_gradient_pct": 18.939790157961625, "diagnostic": false, "flags": [], "start_distance_m": 5473.0, "end_distance_m": 5493.0, "start_elevation_m": 1605.6469894695103, "end_elevation_m": 1609.4349475011027, "min_gradient_pct": -0.016607850840273386 }, { "window_m": 25.0, "max_gradient_pct": 18.820182718402975, "diagnostic": false, "flags": [], "start_distance_m": 5473.0, "end_distance_m": 5498.0, "start_elevation_m": 1605.6469894695103, "end_elevation_m": 1610.352035149111, "min_gradient_pct": 0.3446172961648699 }, { "window_m": 50.0, "max_gradient_pct": 18.16014310861783, "diagnostic": false, "flags": [], "start_distance_m": 5454.0, "end_distance_m": 5504.0, "start_elevation_m": 1602.3726540227287, "end_elevation_m": 1611.4527255770377, "min_gradient_pct": 1.578444071622016 }, { "window_m": 100.0, "max_gradient_pct": 15.907888432923755, "diagnostic": false, "flags": [], "start_distance_m": 5403.0, "end_distance_m": 5503.0, "start_elevation_m": 1595.3558450291648, "end_elevation_m": 1611.2637334620886, "min_gradient_pct": 1.867673878316964 } ], "shape": { "ascent_concentration": 0.289, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 157.0, "shape_class": "sustained" }, "length_m": 6703.160665152853, "start_elevation_m": 1181.5331861757818, "end_elevation_m": 1715.5201031933675, "endpoint_gain_m": 533.9869170175857, "overall_gradient_pct": 7.966196003529764, "accumulated_ascent_m": 536.6290192655217, "window_maxima": { "max_5m": { "gradient_pct": 23.20815443497395, "start_distance_m": 5401.0, "end_distance_m": 5406.0, "midpoint_distance_m": 5403.5, "start_elevation_m": 1594.9540251200347, "end_elevation_m": 1596.1144328417834, "start_xy": [ 982667.6255420188, 6526872.407321814 ], "end_xy": [ 982669.0921001539, 6526877.187406253 ] }, "max_10m": { "gradient_pct": 20.611325141760517, "start_distance_m": 5475.0, "end_distance_m": 5485.0, "midpoint_distance_m": 5480.0, "start_elevation_m": 1606.0152211767356, "end_elevation_m": 1608.0763536909117, "start_xy": [ 982717.4955931929, 6526922.814489266 ], "end_xy": [ 982726.8608976871, 6526926.320351746 ] }, "max_20m": { "gradient_pct": 18.939790157961625, "start_distance_m": 5473.0, "end_distance_m": 5493.0, "midpoint_distance_m": 5483.0, "start_elevation_m": 1605.6469894695103, "end_elevation_m": 1609.4349475011027, "start_xy": [ 982715.622532294, 6526922.11331677 ], "end_xy": [ 982732.1483488166, 6526932.320039341 ] }, "max_25m": { "gradient_pct": 18.820182718402975, "start_distance_m": 5473.0, "end_distance_m": 5498.0, "midpoint_distance_m": 5485.5, "start_elevation_m": 1605.6469894695103, "end_elevation_m": 1610.352035149111, "start_xy": [ 982715.622532294, 6526922.11331677 ], "end_xy": [ 982735.4487435851, 6526936.076020488 ] }, "max_50m": { "gradient_pct": 18.16014310861783, "start_distance_m": 5454.0, "end_distance_m": 5504.0, "midpoint_distance_m": 5479.0, "start_elevation_m": 1602.3726540227287, "end_elevation_m": 1611.4527255770377, "start_xy": [ 982698.4466183576, 6526914.125816945 ], "end_xy": [ 982739.4092173076, 6526940.583197863 ] }, "max_100m": { "gradient_pct": 15.907888432923755, "start_distance_m": 5403.0, "end_distance_m": 5503.0, "midpoint_distance_m": 5453.0, "start_elevation_m": 1595.3558450291648, "end_elevation_m": 1611.2637334620886, "start_xy": [ 982668.2121652729, 6526874.31935559 ], "end_xy": [ 982738.7491383539, 6526939.832001634 ] } }, "window_minima": { "min_5m": { "gradient_pct": -12.295012183044491, "start_distance_m": 5629.0, "end_distance_m": 5634.0, "midpoint_distance_m": 5631.5, "start_elevation_m": 1624.672015003756, "end_elevation_m": 1624.0572643946039, "start_xy": [ 982681.7572503862, 6526994.464732638 ], "end_xy": [ 982680.9667872912, 6526989.5276112 ] }, "min_10m": { "gradient_pct": -1.4589622126527502, "start_distance_m": 5624.0, "end_distance_m": 5634.0, "midpoint_distance_m": 5629.0, "start_elevation_m": 1624.2031606158691, "end_elevation_m": 1624.0572643946039, "start_xy": [ 982682.5477134811, 6526999.4018540755 ], "end_xy": [ 982680.9667872912, 6526989.5276112 ] }, "min_20m": { "gradient_pct": -0.016607850840273386, "start_distance_m": 625.0, "end_distance_m": 645.0, "midpoint_distance_m": 635.0, "start_elevation_m": 1206.7730077516835, "end_elevation_m": 1206.7696861815155, "start_xy": [ 982428.0766951982, 6525771.704408348 ], "end_xy": [ 982446.4581333576, 6525779.235057165 ] }, "min_25m": { "gradient_pct": 0.3446172961648699, "start_distance_m": 622.0, "end_distance_m": 647.0, "midpoint_distance_m": 634.5, "start_elevation_m": 1206.731799111034, "end_elevation_m": 1206.8179534350752, "start_xy": [ 982425.3996858028, 6525770.350295834 ], "end_xy": [ 982448.4108304288, 6525779.667462239 ] }, "min_50m": { "gradient_pct": 1.578444071622016, "start_distance_m": 599.0, "end_distance_m": 649.0, "midpoint_distance_m": 624.0, "start_elevation_m": 1206.0670394056958, "end_elevation_m": 1206.8562614415068, "start_xy": [ 982410.5294540412, 6525753.226905696 ], "end_xy": [ 982450.3635275, 6525780.099867313 ] }, "min_100m": { "gradient_pct": 1.867673878316964, "start_distance_m": 432.0, "end_distance_m": 532.0, "midpoint_distance_m": 482.0, "start_elevation_m": 1201.6929956494355, "end_elevation_m": 1203.5606695277525, "start_xy": [ 982305.2568707309, 6525631.03581976 ], "end_xy": [ 982377.7258894567, 6525696.061413614 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 27.825375936754426, "start_distance_m": 5402.0, "end_distance_m": 5404.0, "midpoint_distance_m": 5403.0, "start_elevation_m": 1595.1475622222943, "end_elevation_m": 1595.7040697410293, "start_xy": [ 982667.9188536458, 6526873.363338702 ], "end_xy": [ 982668.5054768999, 6526875.275372478 ] }, "max_3m": { "gradient_pct": 25.286260420618117, "start_distance_m": 5403.0, "end_distance_m": 5406.0, "midpoint_distance_m": 5404.5, "start_elevation_m": 1595.3558450291648, "end_elevation_m": 1596.1144328417834, "start_xy": [ 982668.2121652729, 6526874.31935559 ], "end_xy": [ 982669.0921001539, 6526877.187406253 ] } }, "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": 0.024, "obstruction_max_height_m": 21.1, "flagged_windows_m": [] }, "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_E981-N6525_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E982-N6525_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E982-N6526_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E982-N6527_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E983-N6525_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E983-N6526_0m5.tif" ], "calculated_at": "2026-09-17T02:39:55+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-N6525", "E982-N6525", "E982-N6526", "E982-N6527", "E983-N6525", "E983-N6526" ], "elevation_blocks": [ "21LHD5QL2@2025-03-26" ], "ign_dalles": [ "LHD_FXX_0981_6526_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0982_6526_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0982_6527_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0982_6528_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0983_6526_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0983_6527_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD5QL2" ], "ign_editions": [ "2025-03-26" ], "ign_dsm_edition": { "LHD_FXX_0981_6526_MNT_O_0M50_LAMB93_IGN69": "2025-03-26", "LHD_FXX_0982_6526_MNT_O_0M50_LAMB93_IGN69": "2025-03-26", "LHD_FXX_0982_6527_MNT_O_0M50_LAMB93_IGN69": "2025-03-26", "LHD_FXX_0982_6528_MNT_O_0M50_LAMB93_IGN69": "2025-03-26", "LHD_FXX_0983_6526_MNT_O_0M50_LAMB93_IGN69": "2025-03-26", "LHD_FXX_0983_6527_MNT_O_0M50_LAMB93_IGN69": "2025-03-26" }, "climb_origin": "discovered", "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked", "carriageway": { "stations": 275, "stations_resolved": 275, "width_median_m": 5.5, "width_p10_m": 3.5, "width_min_m": 1.25, "width_max_m": 11.5, "bounded_share": 0.524, "unbounded_share": 0.476, "confidence_median": 0.517, "width_median_bounded_m": 5.38, "window_m": [ 5473.0, 5498.0 ], "width_at_max25_m": 3.25, "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": 275, "stations_resolved": 275, "width_median_m": 7.25, "width_p10_m": 4.45, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.716, "unbounded_share": 0.284, "confidence_median": 1.0, "width_median_bounded_m": 6.75, "window_m": [ 5473.0, 5498.0 ], "width_at_max25_m": 6.75, "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": "Hauteluce", "county": "Savoie", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }