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  "road_source": "OpenStreetMap (local PBF extract)",
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  "elevation_dataset": "USGS 3DEP 1 m DEM, VT_Statewide_A23 (collected 2023)",
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  "notes": "Coarse pass: max 14.9% over 200 m (Terrain 50), gain 211.1 m over 1836 m way. EXTENDED by graph walk: +3 segment(s) at base, +0 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. ADOPTED (NE wave 1, 2026-08-25): endurance. 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_2_A23",
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  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
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  "county": "Vermont"
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}