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   "elevation_provider_key": "usa3dep",
   "authority": "usa-inventory",
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  "elevation_crs": "EPSG:26911",
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  "elevation_tiles": [
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  "calculated_at": "2026-09-29T21:28:17+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/us-west-la-hills-block-batch-us-west-la-hills.osm.pbf",
  "osm_snapshot": "",
  "run_id": "us-west-la-hills",
  "elevation_provider": "USGS 3DEP (The National Map)",
  "elevation_licence": "Public domain \u2014 USGS 3DEP 1 m DEM, courtesy of the U.S. Geological Survey",
  "elevation_dataset": "USGS 3DEP 1 m DEM, CA_LosAngeles_B23 (collected 2023-24)",
  "elevation_tile_ids": [
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  "route_summit_trim_m": 191.0,
  "route_summit_trim_loss_m": 29.1,
  "climb_origin": "named-pass",
  "named_pass": "Baxter Street",
  "any_length": true,
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
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  "seam_filled_in_maximum": false,
  "canopy_source": {
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    "25": 1.0
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  "structure_own_ways": "none \u2014 the route carried no way list and no mapped way runs along it; own decks unmasked",
  "carriageway": {
   "stations": 13,
   "stations_resolved": 13,
   "width_median_m": 10.25,
   "width_p10_m": 9.75,
   "width_min_m": 8.5,
   "width_max_m": 12.0,
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   "width_at_max25_m": 10.75,
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   "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",
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   "hedge_to_hedge": {
    "status": "unavailable \u2014 no DSM raster (surface model absent or point-cloud only, which cannot serve off-line samples)"
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  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Los Angeles",
  "county": "California"
 }
}