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  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/vermont-260821.osm.pbf",
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  "notes": "Coarse pass: max 17.0% over 200 m (Terrain 50), gain 45.4 m over 343 m way. KEPT at seed extent: no ascending continuation (min_avg=2.0%). ADOPTED (NE wave 1, 2026-08-25): clean-steep. Wales dials per PRODUCTION 'US ADOPTION DIALS'.",
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   "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/VT_Statewide_1_A23",
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  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
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  "county": "Vermont"
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}