ThatCarHitMe.com
An Injuria.ai Company
YEAR-OVER-YEAR CRASH REPORT · VERMONT, VT · SEPTEMBER 2021
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/vermont/statewide/september-2021-report
Monthly Traffic Safety Analysis
871 CRASHES IN
VERMONT, VT
SEPTEMBER 2021
In September 2021, Vermont recorded 871 total traffic crashes, an 8.5% increase from the 803 crashes reported in September 2020. While the number of fatalities remained unchanged at 8, the total number of injuries rose by 21.1%, from 133 in the prior period to 161 in the current period. This increase in injuries represents one of the most significant shifts in outcomes between the two months.
871
▲ 8.5%was 803
Total Crash Events
8
Fatal Crashes
161
▲ 21.1%was 133
Injury Crashes
8
Fatal Crash Events
Note: "Fatal Crashes" and "Injury Crashes" count crash events — this source publishes crash-level counts only, not individual persons. 251 crashes with unreported severity are not shown in the severity breakdown.
Source: Vermont Crash Data · Arcgis Open Data · 2021-09-01 to 2021-09-30 · Aggregate counts from crash, person, and vehicle records
Trend Summary
Year-over-year data for September shows a rising trend in traffic incidents across Vermont. Total crashes increased by 8.5%, from 803 in September 2020 to 871 in September 2021. This was accompanied by a 21.1% increase in total injuries, which grew from 133 to 161, while total fatalities held steady at 8 for both periods.
When Crashes Happen
The temporal patterns of crashes shifted between September 2020 and September 2021. The peak day for crashes moved from Wednesday (136 incidents) in the prior year to Friday (155 incidents) in the current year. While the 3 p.m. hour was a peak time in both periods with 75 crashes, the morning commute saw a notable increase, with crashes at 7 a.m. rising from 38 to 55 year-over-year.
Source: Vermont Crash Data · Arcgis Open Data · 2021-09-01 to 2021-09-30 · Crash date field aggregated by weekday
Source: Vermont Crash Data · Arcgis Open Data · 2021-09-01 to 2021-09-30 · Crash time field aggregated by hour (0-23)
Crash Severity Breakdown
While the absolute number of fatal crashes remained constant at 8 for both September 2020 and September 2021, the proportion of crashes resulting in an injury increased. Injury-related incidents accounted for 18.5% of all crashes in the current period, up from 16.6% in the prior year. Consequently, the fatal crash rate per 100 crashes saw a slight decrease from 1.0 to 0.92.
Outcome by Severity (Crash Events)
Source: Vermont Crash Data · Arcgis Open Data · 2021-09-01 to 2021-09-30 · Severity derived from reported fatal/injury indicators (no KABCO A/B/C codes)
Severity Distribution (Crash Events)
Source: Vermont Crash Data · Arcgis Open Data · 2021-09-01 to 2021-09-30 · Most severe injury per crash record
Road & Environmental Conditions
Crashes in September 2021 occurred more frequently under adverse conditions compared to the previous year. The proportion of crashes happening in the dark increased from 19.3% to 23.2% of the total. Similarly, incidents during rainy conditions more than doubled from 16 to 34, and crashes on wet road surfaces increased from 25 to 44.
Weather
Source: Vermont Crash Data · Arcgis Open Data · 2021-09-01 to 2021-09-30 · Weather condition at time of crash
Lighting
Source: Vermont Crash Data · Arcgis Open Data · 2021-09-01 to 2021-09-30 · Lighting condition field
Road Surface
Source: Vermont Crash Data · Arcgis Open Data · 2021-09-01 to 2021-09-30 · Road surface condition field
Data Sources & Methodology
Primary Data Source
All crash data in this report is sourced from Vermont Crash Data, accessed programmatically via the Arcgis 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: Arcgis 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: 2021-09-01 through 2021-09-30
- Report generated: July 5, 2026
Data Coverage
- Reporting period: 2021-09-01 through 2021-09-30 (30 days)
- Geographic scope: vermont, VT
- Total crash records analyzed: 871
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). "vermont, VT Crash Intelligence Report: September 2021." Published July 5, 2026. Reporting period: 2021-09-01 to 2021-09-30. Data source: Vermont Crash Data, Arcgis Open Data. Available at: https://thatcarhitme.com/crash-data/vermont/statewide/september-2021-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: Vermont Crash Data · Arcgis
Period: 2021-09-01 – 2021-09-30
Generated: July 5, 2026 · All rights reserved