Datastruct
DATASTRUCT
Data source · Chicago Police Department

Traffic Crashes — Vehicles

Daily unit-grain public data for independently moving roadway units involved in CPD crashes, coordinated with Crashes and People through documented record keys.

FreeAPIFull fileSubnational
What it answers ↓
1Questions answered
28Fields delivered
1Region
Source CON Traffic crash occu… FEA Axle count FEA Event date FEA Gross vehicle weig… FEA Hazardous material… FEA Hazardous material… and many more …

Questions this answers

1 · best fit first
QuestionSupporting fit
Traffic crash occurrence and sequence

Anonymous unit-grain rows join to the crash event through crash_record_id and emit crash_date, unit_type, vehicle_type and use, travel direction, pre-crash maneuver, and first contact point. This usefully establishes involved-unit classes and recorded pre-crash/first-impact circumstances. It does not independently provide event location, first-crash classification, or a detailed ordered sequence, so it complements rather than replaces the Crashes asset; retain the crash/unit key, Chicago scope, and extraction/metadata timestamp.

Fields it delivers

28 fields
Axle countEvent dateGross vehicle weight classHazardous material classHazardous material involvementHazardous material violation involvementInitial impact pointMotor-carrier safety violation involvementOccupant countOrganisation nameOversized load indicatorPre event movementSpeeding involvementTravel directionUSDot numberVehicle body classVehicle cargo typeVehicle defectVehicle fire indicatorVehicle lengthVehicle makeVehicle modelVehicle model yearVehicle out-of-service indicatorVehicle passenger countVehicle towed indicatorVehicle useVehicle width
CoverageSubnational

First-party product material identifies the dataset as covering Illinois. The footprint is limited to Chicago/CPD jurisdiction and is represented by its containing Illinois subdivision. The code describes service footprint, not completeness of every regulated record.

Illinois, United States
Access & termsFree

The agency or publisher provides this source through a directly accessible public page, download, API, or service endpoint with no checkout, subscription, API-key purchase, or stated access fee on the cited route. The standing route is therefore free, even though the retired review did not resolve reuse rights.

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