{
  "data_source": "City of Chicago Open Data Portal (Socrata)",
  "data_pulled": "2026-05-25",
  "jurisdiction": "City of Chicago, Illinois",
  "date_range": "2017-01-01 to 2024-12-31",
  "truck_filter": "vehicle_type \u2208 {tractor w/+w/o trailer, single-unit truck w/+w/o trailer}",
  "severity_filter": "KSI (Killed + Incapacitating Injury per Illinois IDOT codes)",
  "preliminary_years": [
    2024
  ],
  "date_range_note": "Chicago Open Data Portal crash records prior to 2017 are sparse; full electronic reporting began mid-2017.",
  "totals": {
    "ksi_collisions": 549,
    "deaths": 66,
    "severe_injuries": 567,
    "pedestrians_killed": 25,
    "bicyclists_killed": 4,
    "geocoded_points": 542,
    "geocoded_pct": 98.7
  },
  "vision_zero_baseline_2017_deaths": 11,
  "vision_zero_latest_2024_deaths": 6,
  "vision_zero_change_pct": -45.5,
  "delivery_window_6_10am_share_pct": 23.1,
  "top_corridor": "PULASKI RD",
  "top_corridor_ksi_count": 29,
  "top_city": "CHICAGO"
}