{
  "corridors": [
    {
      "band": "CLEAR",
      "confidence": "HIGH",
      "drivers": [
        "No closures or restrictions shown on the corridor read — QEII open",
        "Mostly dry, ice in places; corridor lowest minus 5 degrees near Athabasca, winds to 23 km/h near Fort Macleod",
        "No Environment Canada warnings in force as of 6:03 AM CST (EC check via Weather Navigation)",
        "Tonight's EC forecast low plus 2 degrees at Edmonton, plus 1 at Calgary — corridor low recorded as plus 1; no scoring threshold met"
      ],
      "id": "qeii",
      "low_c": 1,
      "low_source": "Environment Canada",
      "name": "QEII — Calgary ↔ Edmonton",
      "score": 0,
      "sources": [
        "Environment Canada",
        "511 Alberta (via Weather Navigation)"
      ]
    },
    {
      "band": "CLEAR",
      "confidence": "HIGH",
      "drivers": [
        "No closures or restrictions shown on the corridor read — Yellowhead open",
        "Mostly ice — surface worsened from yesterday's mostly dry, ice in places; corridor lowest minus 5 degrees, winds to 17 km/h",
        "No Environment Canada warnings in force as of 6:03 AM CST (EC check via Weather Navigation)",
        "Jasper 6:00 a.m. read plus 2.7 degrees — above freezing after yesterday's minus 4.9 dawn; tonight low plus 3, wind chill minus 5 this morning — no scoring threshold met",
        "Icefields Parkway snow-tire or chain rule in force since Nov 1 (Parks Canada) — context, not scored"
      ],
      "id": "yellowhead",
      "low_c": 3,
      "low_source": "Environment Canada",
      "name": "Yellowhead — Edmonton ↔ Jasper",
      "score": 0,
      "sources": [
        "Environment Canada",
        "511 Alberta (via Weather Navigation)"
      ]
    },
    {
      "band": "CAUTION",
      "confidence": "HIGH",
      "drivers": [
        "Open to through traffic — no incidents reported, last DriveBC poll 2:00 AM PDT (via Is The Coquihalla Open); no full closures reported as of 5:16 AM MST (Weather Navigation summit page, 511 feed)",
        "Partial closure / major restriction: paving operations with lane closures in both directions, Box Canyon Chain-Up to Zopkios Brake Check and Coquihalla Lakes Road to Larson Hill (+40)",
        "Summit ice — road surface estimated minus 1 degree; limited visibility with fog between Exit 202 Portia and Exit 228 Coquihalla Lakes Road, last update 2:28 AM PCT (DriveBC)",
        "M+S or 3-peak-mountain-snowflake tires required Oct 1 to Apr 30 (standing rule, not a chain-up requirement, not scored)",
        "No Environment Canada alerts shown for Merritt; tonight EC Merritt forecast: partly cloudy, low plus 5 degrees — no scoring threshold met"
      ],
      "id": "coquihalla",
      "low_c": 5,
      "low_source": "Environment Canada",
      "name": "Coquihalla — Hope ↔ Kamloops",
      "score": 40,
      "sources": [
        "DriveBC (via Is The Coquihalla Open)",
        "Environment Canada"
      ]
    },
    {
      "band": "CAUTION",
      "confidence": "LIMITED",
      "drivers": [
        "ON-404 HOV ramp at the 401 interchange: all lanes closed after a collision, rated critical, reported about 35 minutes before the 7:17 AM EST read — partial closure at the interchange (+40)",
        "401 mainline not closed: eastbound police investigation at Westney Road, Ajax, 1 right lane and shoulder closed, rated moderate — lane-level, not scored",
        "Yesterday's Markham Road collision is gone from the incident list — cleared",
        "1 of Toronto's 9 major highways has a major incident or full closure; 1 is slow or has lanes closed, 7 are clear",
        "EC Toronto-area: no alerts shown; tonight cloudy, 60 percent chance of showers this evening, low 9 degrees — no scoring threshold met"
      ],
      "id": "on-401",
      "low_c": 9,
      "low_source": "Environment Canada",
      "name": "ON 401 — Windsor ↔ Toronto ↔ Kingston",
      "score": 40,
      "sources": [
        "routeoutlook.com (live traffic aggregator, presenting Ontario 511 data)",
        "Environment Canada"
      ]
    }
  ],
  "scored_at": "2026-11-05T05:25:00-07:00"
}