Traffic Crashes - Crashes
Attribution: City of Chicago · source
Crash data shows information about each traffic crash on city streets within the City of Chicago limits and under the jurisdiction of Chicago Police Department (CPD). Data are shown as is from the electronic crash reporting system (E-Crash) at CPD, excluding any personally identifiable information. Records are added to the data portal when a crash report is finalized or when amendments are made to an existing report in E-Crash. Data from E-Crash are available for some police districts in 2015, but citywide data are not available until September 2017. About half of all crash reports, mostly minor crashes, are self-reported at the police district by the driver(s) involved and the other half are recorded at the scene by the police officer responding to the crash. Many of the crash parameters, including street condition data, weather condition, and posted speed limits, are recorded by the reporting officer based on best available information at the time, but many of these may disagree with posted information or other assessments on road conditions. If any new or updated information on a crash is received, the reporting officer may amend the crash report at a later time. A traffic crash within the city limits for which CPD is not the responding police agency, typically crashes on interstate highways, freeway ramps, and on local roads along the City boundary, are excluded from this dataset. All crashes are recorded as per the format specified in the Traffic Crash Report, SR1050, of the Illinois Department of Transportation. The crash data published on the Chicago data portal mostly follows the data elements in SR1050 form. The current version of the SR1050 instructions manual with detailed information on each data elements is available <a href="https://idot.illinois.gov/content/dam/soi/en/web/idot/documents/transportation-system/manuals-guides-and-handbooks/safety/illinois-traffic-crash-report-sr-1050-instruction-manual-2019.pdf" target="_blank">here</a>. As per Illinois statute, only crashes with a property damage value of $1,500 or more or involving bodily injury to any person(s) and that happen on a public roadway and that involve at least one moving vehicle, except bike dooring, are considered reportable crashes. However, CPD records every reported traffic crash event, regardless of the statute of limitations, and hence any formal Chicago crash dataset released by Illinois Department of Transportation may not include all the crashes listed here. Change 11/21/2023: We have removed the RD_NO (Chicago Police Department report number) for privacy reasons.
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Metadata
Schema (49 columns)
Column metadata from the source provider's own profiling
| Column | Type | Cardinality | Nulls | Top Values | Range |
|---|---|---|---|---|---|
CRASH_RECORD_ID This number can be used to link to the same crash in the Vehicles and People datasets. This number also serves as a unique ID in this dataset. | text | — | — | — | — |
CRASH_DATE_EST_I Crash date estimated by desk officer or reporting party (only used in cases where crash is reported at police station days after the crash) | text | — | — | — | — |
CRASH_DATE Date and time of crash as entered by the reporting officer | calendar_date | — | — | — | — |
POSTED_SPEED_LIMIT Posted speed limit, as determined by reporting officer | number | — | — | — | — |
TRAFFIC_CONTROL_DEVICE Traffic control device present at crash location, as determined by reporting officer | text | — | — | — | — |
DEVICE_CONDITION Condition of traffic control device, as determined by reporting officer | text | — | — | — | — |
WEATHER_CONDITION Weather condition at time of crash, as determined by reporting officer | text | — | — | — | — |
LIGHTING_CONDITION Light condition at time of crash, as determined by reporting officer | text | — | — | — | — |
FIRST_CRASH_TYPE Type of first collision in crash | text | — | — | — | — |
TRAFFICWAY_TYPE Trafficway type, as determined by reporting officer | text | — | — | — | — |
LANE_CNT Total number of through lanes in either direction, excluding turn lanes, as determined by reporting officer (0 = intersection) | number | — | — | — | — |
ALIGNMENT Street alignment at crash location, as determined by reporting officer | text | — | — | — | — |
ROADWAY_SURFACE_COND Road surface condition, as determined by reporting officer | text | — | — | — | — |
ROAD_DEFECT Road defects, as determined by reporting officer | text | — | — | — | — |
REPORT_TYPE Administrative report type (at scene, at desk, amended) | text | — | — | — | — |
CRASH_TYPE A general severity classification for the crash. Can be either Injury and/or Tow Due to Crash or No Injury / Drive Away | text | — | — | — | — |
INTERSECTION_RELATED_I A field observation by the police officer whether an intersection played a role in the crash. Does not represent whether or not the crash occurred within the intersection. | text | — | — | — | — |
NOT_RIGHT_OF_WAY_I Whether the crash begun or first contact was made outside of the public right-of-way. | text | — | — | — | — |
HIT_AND_RUN_I Crash did/did not involve a driver who caused the crash and fled the scene without exchanging information and/or rendering aid | text | — | — | — | — |
DAMAGE A field observation of estimated damage. | text | — | — | — | — |
DATE_POLICE_NOTIFIED Calendar date on which police were notified of the crash | calendar_date | — | — | — | — |
PRIM_CONTRIBUTORY_CAUSE The factor which was most significant in causing the crash, as determined by officer judgment | text | — | — | — | — |
SEC_CONTRIBUTORY_CAUSE The factor which was second most significant in causing the crash, as determined by officer judgment | text | — | — | — | — |
STREET_NO Street address number of crash location, as determined by reporting officer | number | — | — | — | — |
STREET_DIRECTION Street address direction (N,E,S,W) of crash location, as determined by reporting officer | text | — | — | — | — |
STREET_NAME Street address name of crash location, as determined by reporting officer | text | — | — | — | — |
BEAT_OF_OCCURRENCE Chicago Police Department Beat ID. Boundaries available at https://data.cityofchicago.org/d/aerh-rz74 | number | — | — | — | — |
PHOTOS_TAKEN_I Whether the Chicago Police Department took photos at the location of the crash | text | — | — | — | — |
STATEMENTS_TAKEN_I Whether statements were taken from unit(s) involved in crash | text | — | — | — | — |
DOORING_I Whether crash involved a motor vehicle occupant opening a door into the travel path of a bicyclist, causing a crash | text | — | — | — | — |
WORK_ZONE_I Whether the crash occurred in an active work zone | text | — | — | — | — |
WORK_ZONE_TYPE The type of work zone, if any | text | — | — | — | — |
WORKERS_PRESENT_I Whether construction workers were present in an active work zone at crash location | text | — | — | — | — |
NUM_UNITS Number of units involved in the crash. A unit can be a motor vehicle, a pedestrian, a bicyclist, or another non-passenger roadway user. Each unit represents a mode of traffic with an independent trajectory. | number | — | — | — | — |
MOST_SEVERE_INJURY Most severe injury sustained by any person involved in the crash | text | — | — | — | — |
INJURIES_TOTAL Total persons sustaining fatal, incapacitating, non-incapacitating, and possible injuries as determined by the reporting officer | number | — | — | — | — |
INJURIES_FATAL Total persons sustaining fatal injuries in the crash | number | — | — | — | — |
INJURIES_INCAPACITATING Total persons sustaining incapacitating/serious injuries in the crash as determined by the reporting officer. Any injury other than fatal injury, which prevents the injured person from walking, driving, or normally continuing the activities they were capable of performing before the injury occurred. Includes severe lacerations, broken limbs, skull or chest injuries, and abdominal injuries. | number | — | — | — | — |
INJURIES_NON_INCAPACITATING Total persons sustaining non-incapacitating injuries in the crash as determined by the reporting officer. Any injury, other than fatal or incapacitating injury, which is evident to observers at the scene of the crash. Includes lump on head, abrasions, bruises, and minor lacerations. | number | — | — | — | — |
INJURIES_REPORTED_NOT_EVIDENT Total persons sustaining possible injuries in the crash as determined by the reporting officer. Includes momentary unconsciousness, claims of injuries not evident, limping, complaint of pain, nausea, and hysteria. | number | — | — | — | — |
INJURIES_NO_INDICATION Total persons sustaining no injuries in the crash as determined by the reporting officer | number | — | — | — | — |
INJURIES_UNKNOWN Total persons for whom injuries sustained, if any, are unknown | number | — | — | — | — |
CRASH_HOUR The hour of the day component of CRASH_DATE. | number | — | — | — | — |
CRASH_DAY_OF_WEEK The day of the week component of CRASH_DATE. Sunday=1
| number | — | — | — | — |
CRASH_MONTH The month component of CRASH_DATE. | number | — | — | — | — |
LATITUDE The latitude of the crash location, as determined by reporting officer, as derived from the reported address of crash | number | — | — | — | — |
LONGITUDE The longitude of the crash location, as determined by reporting officer, as derived from the reported address of crash | number | — | — | — | — |
LOCATION The crash location, as determined by reporting officer, as derived from the reported address of crash, in a column type that allows for mapping and other geographic analysis in the data portal software | point | — | — | — | — |
Boundaries - ZIP Codes This column was automatically created in order to record in what polygon from the dataset 'Boundaries - ZIP Codes' (rpca-8um6) the point in column 'location' is located. This enables the creation of region maps (choropleths) in the visualization canvas and data lens. | number | — | — | — | — |
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