ThatCarHitMe.com
An Injuria.ai Company
YEAR-OVER-YEAR CRASH REPORT · CHICAGO, IL · NOVEMBER 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/november-2024-report
Monthly Traffic Safety Analysis
8,937 CRASHES IN
CHICAGO, IL
NOVEMBER 2024
Total crashes in November 2024 were 8,937, a slight increase from 8,779 crashes reported in November 2023. This represents a 1.8% rise year-over-year. A notable shift was the 13.9% increase in pedestrian crashes, rising from 237 to 270.
8,937
▲ 1.8%was 8,779
Total Crash Events
10
Persons Killed
1,915
▼ -1.2%was 1,938
Persons Injured
2,706
▼ -2.5%was 2,776
Hit-and-Run Crashes
Note: "Persons Killed" (10) counts individual fatalities across all crash events. "Fatal" in the severity table below (9) counts crash events where at least one fatality occurred. A single crash can result in multiple fatalities. 13 crashes with unreported severity are not shown in the severity breakdown.
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-11-01 to 2024-11-30 · Aggregate counts from crash, person, and vehicle records
Trend Summary
Overall crash data indicates a slight upward trend in total crashes, with an increase of 158 incidents (1.8%) from 8,779 in November 2023 to 8,937 in November 2024. Despite this, the total number of fatalities remained stable at 10, and total injuries decreased by 23, from 1,938 to 1,915, marking a 1.2% reduction.
2,706
Hit-and-Run Crashes — November 2024
▼ -2.5% vs prior (2,776)
The number of hit-and-run crashes decreased from 2,776 in November 2023 to 2,706 in November 2024, a reduction of 70 incidents or 2.5%. Concurrently, the hit-and-run rate decreased by 1.3 percentage points, from 31.6% to 30.3% of all crashes. This indicates a slight downward trend in both the count and proportion of hit-and-run incidents.
Vulnerable Road User Casualties
2
Pedestrians Killed
1
Cyclists Killed
7
Motorists Killed
0
Other Killed
258
Pedestrians Injured
90
Cyclists Injured
1,558
Motorists Injured
9
Other Injured
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-11-01 to 2024-11-30 · Mode classified from person records (driver/passenger → motorist; pedestrian; bicyclist → cyclist; in-line skater / unspecified → other)
When Crashes Happen
In November 2024, Friday saw the most crashes with 1,545, while in November 2023, Wednesday was the peak day with 1,585 crashes. The peak crash hour remained 5 PM in both periods, although the count at this hour slightly decreased from 729 in November 2023 to 715 in November 2024. Overall, the distribution of crashes across weekdays shows a shift, with Friday becoming the busiest day in the current period.
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-11-01 to 2024-11-30 · Crash date field aggregated by weekday
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-11-01 to 2024-11-30 · Crash time field aggregated by hour (0-23)
Crash Severity Breakdown
Fatal crashes decreased from 10 to 9, maintaining a fatal crash rate of 0.1% of total crashes in both periods. The proportion of crashes resulting in serious injuries slightly increased from 1.4% to 1.5%, while minor injuries decreased from 8.6% to 7.9%. Conversely, crashes with possible injuries saw an increase from 5.6% to 6.1% year-over-year.
Severity is per crash event (most severe injury). 9 fatal crash events resulted in 10 persons killed.
Outcome by Severity (Crash Events)
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-11-01 to 2024-11-30 · KABCO injury classification scale
Severity Distribution
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-11-01 to 2024-11-30 · Most severe injury per crash record
Top Contributing Factors
The top five contributing factors remained consistent in their ranking year-over-year. "FAILING TO YIELD RIGHT-OF-WAY" decreased by 50 crashes, from 1,056 to 1,006, a 4.7% reduction. Conversely, "FOLLOWING TOO CLOSELY" saw a substantial increase of 143 crashes, rising from 723 to 866, a 19.8% increase. Notably, crashes attributed to "WEATHER" increased significantly by 124 incidents, from 58 in November 2023 to 182 in November 2024, representing a 213.8% rise.
Officer-Reported Primary Contributing Cause
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-11-01 to 2024-11-30 · Officer-reported primary contributory cause per crash
Road & Environmental Conditions
There was a significant shift towards adverse weather and road conditions in November 2024 compared to the prior year. Crashes in clear weather decreased by 1,350 incidents, while crashes during rain increased by 865 (270.3%) and during snow increased by 285 (199.3%). Correspondingly, wet road crashes rose by 992 (165.1%) and snow/slush crashes by 316 (486.2%), indicating a greater prevalence of challenging conditions during the current period.
Weather
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-11-01 to 2024-11-30 · Weather condition at time of crash
Lighting
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-11-01 to 2024-11-30 · Lighting condition field
Road Surface
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-11-01 to 2024-11-30 · Road surface condition field
Vehicles & Demographics
Total vehicles involved in crashes increased by 224, from 17,961 to 18,185, a 1.25% rise. Among vehicle types, pedestrian involvement increased by 42 (16.6%), while parked vehicles decreased by 169 (6.9%). All recorded age groups showed an increase in persons involved in crashes, with the 0-15 age group seeing a 14.8% rise, from 553 to 635.
Top Vehicle Makes (18,185 vehicles)
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-11-01 to 2024-11-30 · Vehicle unit records
5,678 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 (19,298 persons with recorded sex)
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-11-01 to 2024-11-30 · Person-level records linked to crash events
Speed Limit Zones
The distribution of crashes across speed zones saw some shifts. Crashes in 30 mph zones increased by 208 (3.2%), while the fatal crash rate in these zones decreased from 0.139% to 0.105%. Notably, 40 mph zones, which had no fatal crashes in the prior period, reported 1 fatal crash in 2024 with a fatal rate of 0.893%, and 45 mph zones also reported 1 fatal crash with a fatal rate of 2.326% compared to none in the prior period.
Fatal crashes by zone: 30 mph: 7 of 6,692 (0.105%) · 40 mph: 1 of 112 (0.893%) · 45 mph: 1 of 43 (2.326%)
Source: Chicago Traffic Crashes · Socrata Open Data · 2024-11-01 to 2024-11-30 · 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: 2024-11-01 through 2024-11-30
- Report generated: June 1, 2026
Data Coverage
- Reporting period: 2024-11-01 through 2024-11-30 (30 days)
- Geographic scope: Chicago, IL
- Total crash records analyzed: 8,937
- Total persons involved: 19,691
- Total vehicles involved: 18,185
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/november-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: 2024-11-01 – 2024-11-30
Generated: June 1, 2026 · All rights reserved