ThatCarHitMe.com
An Injuria.ai Company
YEAR-OVER-YEAR CRASH REPORT · CHICAGO, IL · JUNE 2024
Purpose: Machine-readable JSON endpoint for AI agents, LLMs, researchers, and programmatic consumers. Returns all underlying crash data and AI-generated commentary without HTML.
Authentication: None required. Public endpoint.
GET: https://thatcarhitme.com/api/crash-data/reports/data/illinois/chicago/june-2024-report
Monthly Traffic Safety Analysis
10,136 CRASHES IN
CHICAGO, IL
JUNE 2024
In June 2024, Chicago recorded 10,136 crashes, an increase of 5.7% compared to the 9,590 crashes in June 2023. Despite the rise in total crashes, total fatalities decreased by 14.3% from 14 in June 2023 to 12 in June 2024.
10,136
▲ 5.7%was 9,590
Total Crash Events
12
▼ -14.3%was 14
Persons Killed
2,473
▲ 15.8%was 2,136
Persons Injured
3,089
▲ 3.4%was 2,986
Hit-and-Run Crashes
Note: "Persons Killed" (12) counts individual fatalities across all crash events. "Fatal" in the severity table below (10) counts crash events where at least one fatality occurred. A single crash can result in multiple fatalities. 16 crashes with unreported severity are not shown in the severity breakdown.
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-06-01 to 2024-06-30 · Aggregate counts from crash, person, and vehicle records
Trend Summary
Overall, crash incidents in Chicago show an upward trend year-over-year, with total crashes increasing by 5.7% from 9,590 in June 2023 to 10,136 in June 2024. This increase in crashes was accompanied by a 15.8% rise in total injuries, from 2,136 to 2,473. Conversely, total fatalities decreased by 14.3%, from 14 in June 2023 to 12 in June 2024.
3,089
Hit-and-Run Crashes — June 2024
▲ 3.4% vs prior (2,986)
The number of hit-and-run crashes increased by 103 incidents, rising from 2,986 in June 2023 to 3,089 in June 2024. However, the hit-and-run rate, as a proportion of total crashes, slightly decreased from 31.1% in the prior period to 30.5% in the current period. This indicates a minor downward trend in the overall hit-and-run rate despite the increase in absolute numbers.
Vulnerable Road User Casualties
2
Pedestrians Killed
0
Cyclists Killed
10
Motorists Killed
0
Other Killed
201
Pedestrians Injured
224
Cyclists Injured
2,033
Motorists Injured
15
Other Injured
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-06-01 to 2024-06-30 · Mode classified from person records (driver/passenger → motorist; pedestrian; bicyclist → cyclist; in-line skater / unspecified → other)
When Crashes Happen
The peak day for crashes shifted from Friday in June 2023, with 1,736 crashes, to Saturday in June 2024, which recorded 1,844 crashes. While Friday saw a decrease of 223 crashes, Saturday experienced an increase of 448 crashes year-over-year. The peak hour for crashes also shifted slightly, from 4 PM with 789 crashes in June 2023 to 5 PM with 774 crashes in June 2024.
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-06-01 to 2024-06-30 · Crash date field aggregated by weekday
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-06-01 to 2024-06-30 · Crash time field aggregated by hour (0-23)
Crash Severity Breakdown
The fatal crash rate decreased from 0.14% in June 2023 to 0.1% in June 2024, with 13 fatal crashes in the prior period and 10 in the current period. Crashes resulting in serious injury (Severity A) decreased from 2% to 1.5% of total crashes. Conversely, crashes with minor injuries (Severity B) increased from 9.1% to 9.4%, and possible injuries (Severity C) increased from 4.1% to 6.2% of total crashes year-over-year.
Severity is per crash event (most severe injury). 10 fatal crash events resulted in 12 persons killed.
Outcome by Severity (Crash Events)
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-06-01 to 2024-06-30 · KABCO injury classification scale
Severity Distribution
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-06-01 to 2024-06-30 · Most severe injury per crash record
Top Contributing Factors
The top three contributing factors remained consistent year-over-year: Failing to Yield Right-of-Way, Following Too Closely, and Improper Overtaking/Passing. Failing to Yield Right-of-Way increased by 13 crashes, from 1,129 to 1,142. Following Too Closely saw a 5.6% increase in count, rising from 835 to 882 crashes. Notably, 'Failing to Reduce Speed to Avoid Crash' increased by 108 crashes, from 325 in June 2023 to 433 in June 2024, a 33.2% increase in count.
Officer-Reported Primary Contributing Cause
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-06-01 to 2024-06-30 · Officer-reported primary contributory cause per crash
Road & Environmental Conditions
The proportion of crashes occurring in clear weather conditions slightly increased, with 8,353 crashes in June 2024 compared to 8,062 in June 2023. Crashes during rainy conditions saw a substantial increase of 66%, rising from 497 to 825 incidents. Similarly, crashes on wet road surfaces increased by 63.8%, from 616 to 1,009, indicating a notable shift towards more adverse road conditions in the current period.
Weather
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-06-01 to 2024-06-30 · Weather condition at time of crash
Lighting
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-06-01 to 2024-06-30 · Lighting condition field
Road Surface
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-06-01 to 2024-06-30 · Road surface condition field
Vehicles & Demographics
The overall number of persons involved in crashes increased from 21,548 in June 2023 to 22,399 in June 2024. Significant increases were observed in the 26-34 age group (up by 246 persons) and the 35-44 age group (up by 332 persons). The top three vehicle makes involved in crashes remained consistent year-over-year: Toyota, Chevrolet, and Ford, with Toyota seeing an increase from 2,332 to 2,462 incidents.
Top Vehicle Makes (20,664 vehicles)
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-06-01 to 2024-06-30 · Vehicle unit records
6,567 persons with unknown or unrecorded age excluded from age chart. Age=0 in Chicago records is a sentinel for unknown/unrecorded age (not infants) and is grouped with nulls.
Sex Distribution (21,978 persons with recorded sex)
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-06-01 to 2024-06-30 · Person-level records linked to crash events
Speed Limit Zones
Crashes in the 30 MPH speed limit zone, which accounts for the majority of incidents, increased by 312 crashes from 7,162 in June 2023 to 7,474 in June 2024. Despite this increase in crash count, the fatal crash rate in this zone decreased from 0.14% to 0.107%. The 15 MPH zone saw an increase of 52 crashes, from 355 to 407, and a decrease in fatal crashes from 1 to 0.
Fatal crashes by zone: 20 mph: 1 of 385 (0.26%) · 30 mph: 8 of 7,474 (0.107%) · 35 mph: 1 of 643 (0.156%)
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-06-01 to 2024-06-30 · Posted speed limit at crash location
Data Sources & Methodology
Primary Data Source
All crash data in this report is sourced from Chicago Traffic Crashes, accessed programmatically via the Socrata Open Data API (SODA). This dataset contains official police-reported motor vehicle traffic crash records maintained by the reporting jurisdiction's law enforcement agency. Records are published to the open data portal by the municipality and are subject to the portal's terms of use.
Data Retrieval
- Access method: Socrata Open Data API (SoQL queries)
- Data format: Structured JSON via REST API
- Record types queried: Crash events, person records, and vehicle unit records
- Date filter applied: 2024-06-01 through 2024-06-30
- Report generated: June 1, 2026
Data Coverage
- Reporting period: 2024-06-01 through 2024-06-30 (30 days)
- Geographic scope: Chicago, IL
- Total crash records analyzed: 10,136
- Total persons involved: 22,399
- Total vehicles involved: 20,664
Analytical Methodology
- Severity classification: Uses the KABCO injury scale (K=Fatal, A=Incapacitating injury, B=Non-incapacitating injury, C=Possible injury, O=No injury/property damage only), the standard classification in U.S. Model Minimum Uniform Crash Criteria (MMUCC). Severity is assigned per crash event based on the most severe injury in that crash. A single fatal crash (K) may involve multiple fatalities; therefore the "Persons Killed" count in the headline KPIs may differ from the "Fatal" crash count in the severity breakdown.
- Contributing factors: Reflect the officer-determined primary contributory cause recorded at the time of the crash report. These are preliminary determinations and may not reflect final investigation findings.
- Hit-and-run classification: Based on the hit-and-run indicator field in the official crash report, as determined by the responding officer at the scene.
- Temporal analysis: Day-of-week and hour-of-day distributions are computed from the crash date/time timestamp in each record.
- Demographics: Age and sex distributions are drawn from person-level records linked to each crash event. A single crash may involve multiple persons.
- Vehicle data: Make information is drawn from vehicle unit records linked to each crash event.
- AI commentary: Narrative sections are generated by Google Gemini (large language model) based on the structured data. Commentary is descriptive, not predictive, and should not be interpreted as expert opinion.
Limitations & Disclaimers
- Only crashes reported to and documented by law enforcement are included. Minor incidents, unreported crashes, and near-misses are not captured in this dataset.
- Data reflects conditions at the time of the initial police report and may be subject to subsequent corrections, reclassifications, or supplements by the reporting agency.
- Open data portal records may experience a publication lag - recently occurring crashes may not yet appear in the dataset at the time of report generation.
- AI-generated commentary is produced by a large language model and is intended to highlight patterns in the data. It does not constitute legal, medical, or professional analysis.
- Percentages are calculated from reported data and are subject to rounding.
Non-Affiliation Disclosure
This report is produced independently by ThatCarHitMe.com (Injuria.ai). It is not affiliated with, endorsed by, or produced in partnership with any law enforcement agency, municipal government, state department of transportation, or the National Highway Traffic Safety Administration (NHTSA). Data is sourced from publicly available government open data portals.
Data License
The underlying crash data is provided under the municipality's Open Data Terms of Use and is made available to the public for unrestricted use. This analysis and report is © 2026 Injuria.ai and may be cited with attribution using the suggested citation below.
Corrections & Feedback
If you believe any data in this report is inaccurate or have questions about our methodology, please contact: data@injuria.ai. We are committed to accuracy and will issue corrections promptly.
Suggested Citation
ThatCarHitMe.com (Injuria.ai). "Chicago, IL Crash Intelligence Report." Published June 1, 2026. Data source: Chicago Traffic Crashes, Socrata Open Data. Available at: https://thatcarhitme.com/crash-data/illinois/chicago/june-2024-report
About the Publisher
ThatCarHitMe.com is a crash data intelligence platform developed by Injuria.ai, a legal technology company specializing in traffic safety analytics. We aggregate and analyze publicly available government crash data to produce structured intelligence reports for communities, researchers, journalists, and legal professionals. Our reports combine programmatic data retrieval from official open data portals with AI-assisted narrative analysis.
Questions about this report's data or methodology: data@injuria.ai
ThatCarHitMe.com · An Injuria.ai Company
ThatCarHitMe.com
An Injuria.ai Company
Crash Data Intelligence
Data: Chicago Traffic Crashes · Socrata
Period: 2024-06-01 – 2024-06-30
Generated: June 1, 2026 · All rights reserved