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  "road_source": "OpenStreetMap (local PBF extract)",
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  "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, VT_Statewide_A23 (collected 2023)",
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  "notes": "Coarse pass: max 10.5% over 200 m (Terrain 50), gain 31.8 m over 436 m way. EXTENDED by graph walk: +2 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): clean-steep. Wales dials per PRODUCTION 'US ADOPTION DIALS'. Slug suffixed -vt (suffix(me:old-county-road-2-2)); doc slug patched at corpus copy.",
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  "license_url": "https://howsteep.org/licensing.html"
 },
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  "county": "Vermont"
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}