{
  "schemaVersion": 1,
  "carrier": "Fictional Freight Lines",
  "effectiveFrom": "2026-07-01",
  "currency": "USD",
  "rounding": "half up to cents at each line",
  "fuelSurchargeRate": "0.065",
  "fuelSurchargeBasis": "base charge plus weight charge",
  "zones": [
    {
      "zone": "A",
      "routes": [
        "ROUTE-1",
        "ROUTE-2"
      ],
      "baseChargePerStop": "18.00",
      "ratePerKg": "0.85"
    },
    {
      "zone": "B",
      "routes": [
        "ROUTE-3",
        "ROUTE-4"
      ],
      "baseChargePerStop": "24.00",
      "ratePerKg": "1.10"
    }
  ],
  "formula": "line_total = base + round_half_up(kg * rate_per_kg) + round_half_up((base + weight_charge) * fuel_surcharge_rate)"
}