{
  "reviewedAt": "2026-09-20",
  "policy": "Individual originals, with explicit source/date gaps; no predecessor splice or inferred corrections",
  "roads": {
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        "speed": 0,
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      }
    },
    "UP": {
      "slots": 498,
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      "withheld": {
        "speed": 1,
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      }
    },
    "NS": {
      "slots": 498,
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      "last": "2026-10-02",
      "withheld": {
        "speed": 4,
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        "cars": 5,
        "held": 6
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    },
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      "slots": 74,
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        "speed": 0,
        "dwell": 0,
        "cars": 0,
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      }
    },
    "CN": {
      "slots": 498,
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      "last": "2026-10-02",
      "withheld": {
        "speed": 2,
        "dwell": 3,
        "cars": 3,
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      }
    },
    "CP": {
      "slots": 424,
      "first": "2017-03-25",
      "last": "2025-05-03",
      "withheld": {
        "speed": 14,
        "dwell": 13,
        "cars": 13,
        "held": 14
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    },
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      "slots": 424,
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      "withheld": {
        "speed": 9,
        "dwell": 8,
        "cars": 9,
        "held": 11
      }
    }
  },
  "latestPeriodReviewedAt": "2026-10-08"
}