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  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
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  "notes": "Coarse pass: max 10.0% over 200 m (Terrain 50), gain 40.6 m over 643 m way. EXTENDED by graph walk: +1 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'.",
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  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
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 "area": {
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  "county": "New Hampshire"
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}