data/processed/chicago/fleet_estimate.json

{
  "city": "chicago",
  "computed_at": "2026-05-12T15:39:11.079887",
  "variables": {
    "lambda_density_per_h_km2": 14.67,
    "area_km2": 688.0,
    "avg_distance_km": 10.5,
    "avg_speed_kmh": 30.0,
    "capacity": 4
  },
  "estimates": {
    "m_lower": 883,
    "m_upper": 3533,
    "m_geomean": 1766,
    "m_recommended": 1800
  },
  "data_basis": {
    "n_trips_observed": 1211248,
    "n_days": 5,
    "time_range_minutes": [
      0,
      1440
    ],
    "spatial_filter": null
  },
  "source": "Daganzo (1978), geometric mean of lower/upper bound"
}