{
  "scored_at": "2026-10-21T19:46:05-06:00",
  "backfill": true,
  "corridors": [
    {
      "id": "qeii",
      "name": "QEII — Calgary ↔ Edmonton",
      "score": 0,
      "band": "CLEAR",
      "drivers": [
        "No closures overnight",
        "Mostly dry, ice in places",
        "Coldest corridor reading -5°C near Red Deer"
      ],
      "confidence": "LIMITED",
      "sources": [
        "511 Alberta data (via Weather Navigation)"
      ],
      "low_c": -5,
      "low_source": "511 Alberta data (via Weather Navigation)"
    },
    {
      "id": "yellowhead",
      "name": "Yellowhead — Edmonton ↔ Jasper",
      "score": 0,
      "band": "CLEAR",
      "drivers": [
        "No closures overnight",
        "Mostly dry, ice in places"
      ],
      "confidence": "LIMITED",
      "sources": [
        "511 Alberta data (via Weather Navigation)"
      ],
      "low_c": null
    },
    {
      "id": "coquihalla",
      "name": "Coquihalla — Hope ↔ Kamloops",
      "score": 40,
      "band": "CAUTION",
      "drivers": [
        "Partial closure: right lane closed for electrical maintenance in a work zone (+40)",
        "Three work zones in effect through Oct 31",
        "Open to through traffic all night"
      ],
      "confidence": "LIMITED",
      "sources": [
        "DriveBC Open511 (via Is The Coquihalla Open)"
      ],
      "low_c": null
    },
    {
      "id": "on-401",
      "name": "ON 401 — Windsor ↔ Toronto ↔ Kingston",
      "score": 10,
      "band": "CLEAR",
      "drivers": [
        "Environment Canada frost advisory in force overnight — Mississauga, Brampton, Niagara (+10)",
        "Patchy frost, overnight lows near 1°C away from the lakes",
        "No closures reported"
      ],
      "confidence": "LIMITED",
      "sources": [
        "Environment Canada (via NewsBeep / INSAUGA wire)"
      ],
      "low_c": 1,
      "low_source": "Environment Canada (via NewsBeep / INSAUGA wire)"
    }
  ]
}