Fatal Crashes Only
This report covers fatal crashes only, from the NHTSA Fatality Analysis Reporting System — the federal census of every crash on a US public road that killed someone within 30 days. It does not include injury or property-damage-only crashes, and its totals are not comparable with the all-severity crash reports published elsewhere on this site.
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YEAR-OVER-YEAR CRASH REPORT · NEW HAMPSHIRE · SEPTEMBER 2023
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.
Monthly Traffic Safety Analysis
14 CRASHES IN
NEW HAMPSHIRE
SEPTEMBER 2023
The number of fatal crashes increased by 1, from 13 in September 2022 to 14 in September 2023. Total fatalities remained stable at 17 in both periods. A notable shift is the involvement of pedestrians in fatal crashes, rising from 0 in the prior period to 2 in the current period.
14
▲ 7.7%was 13
Total Crash Events
17
Persons Killed
12
▲ 9.1%was 11
Persons Injured
14
▲ 7.7%was 13
Fatal Crash Events
Note: "Persons Killed" (17) counts individual fatalities across all crash events. "Fatal" in the severity table below (14) counts crash events where at least one fatality occurred. A single crash can result in multiple fatalities.
Source: NHTSA FARS (Fatal Crashes) · Federal fatal-crash census · 2023-09-01 to 2023-09-30 · Aggregate counts from crash, person, and vehicle records
Trend Summary
Fatal crashes in September 2023 saw a slight increase, with 14 fatal crashes compared to 13 in September 2022. Despite this rise in fatal crash events, the total number of fatalities remained constant at 17 in both periods. This indicates a stable, though slightly higher, trend in fatal crash occurrences year-over-year.
Vulnerable Road User Casualties
2
Pedestrians Killed
15
Motorists Killed
0
Pedestrians Injured
12
Motorists Injured
Source: NHTSA FARS (Fatal Crashes) · Federal fatal-crash census · 2023-09-01 to 2023-09-30 · Mode classified from person records (driver/passenger → motorist; pedestrian; bicyclist → cyclist; in-line skater / unspecified → other)
When Crashes Happen
The peak day for fatal crashes shifted from Saturday with 4 crashes in September 2022 to Tuesday with 5 crashes in September 2023. The peak hour also changed, moving from 8 PM with 3 crashes in the prior period to 6 PM with 2 crashes in the current period. Overall, fatal crashes were more spread across weekdays in the current period compared to the prior period.
Source: NHTSA FARS (Fatal Crashes) · Federal fatal-crash census · 2023-09-01 to 2023-09-30 · Crash date field aggregated by weekday
Source: NHTSA FARS (Fatal Crashes) · Federal fatal-crash census · 2023-09-01 to 2023-09-30 · Crash time field aggregated by hour (0-23)
Road & Environmental Conditions
Clear weather conditions were dominant in both periods, with 13 fatal crashes occurring in clear conditions in September 2023, up from 12 in September 2022. Rain was a factor in 1 fatal crash in both periods. Daylight conditions accounted for 8 fatal crashes in September 2023, an increase from 6 in September 2022. The data for road surface conditions is not available for either period.
Weather
Source: NHTSA FARS (Fatal Crashes) · Federal fatal-crash census · 2023-09-01 to 2023-09-30 · Weather condition at time of crash
Lighting
Source: NHTSA FARS (Fatal Crashes) · Federal fatal-crash census · 2023-09-01 to 2023-09-30 · Lighting condition field
Vehicles & Demographics
Top Vehicle Makes (24 vehicles)
Source: NHTSA FARS (Fatal Crashes) · Federal fatal-crash census · 2023-09-01 to 2023-09-30 · Vehicle unit records
1 persons with unknown or unrecorded age excluded from age chart.
Sex Distribution (40 persons with recorded sex)
Source: NHTSA FARS (Fatal Crashes) · Federal fatal-crash census · 2023-09-01 to 2023-09-30 · Person-level records linked to crash events
Speed Limit Zones
Fatal crashes at a 30 mph speed limit increased from 3 in September 2022 to 6 in September 2023. Crashes at a 50 mph speed limit, which accounted for 5 fatal crashes in the prior period, were not observed in the current period. Instead, a new category of 70 mph speed limit recorded 1 fatal crash in September 2023.
Fatal crashes by zone: 30 mph: 6 of 6 (100%) · 35 mph: 2 of 2 (100%) · 40 mph: 3 of 3 (100%) · 55 mph: 2 of 2 (100%) · 70 mph: 1 of 1 (100%)
Source: NHTSA FARS (Fatal Crashes) · Federal fatal-crash census · 2023-09-01 to 2023-09-30 · Posted speed limit at crash location
Manner of Collision
The most frequent manner of collision in September 2023 was "The First Harmful Event was Not a Collision with a Motor Vehicle in Transport" with 7 fatal crashes, an increase from 4 in September 2022. Angle collisions decreased from 5 fatal crashes in the prior period to 3 in the current period. Front-to-Front collisions saw a slight decrease, from 4 to 3 fatal crashes year-over-year.
Manner of Collision
Source: NHTSA FARS (Fatal Crashes) · Federal fatal-crash census · 2023-09-01 to 2023-09-30 · Crash-level records
Vehicle Type
Two-wheel motorcycles remained a dominant vehicle type in fatal crashes, with 7 instances in September 2023, a slight decrease from 8 in September 2022. 4-door sedans were involved in 4 fatal crashes in the current period, down from 7 in the prior period. Light pickups were involved in 3 fatal crashes in September 2023, while compact utility vehicles, which had 5 fatal crashes in the prior period, were not among the top types in the current period.
Vehicle Type
Showing top 9 of 10 reported. 1 additional (1 total) not shown: Medium/heavy Pickup (GVWR greater than 10,000 lbs.).
Source: NHTSA FARS (Fatal Crashes) · Federal fatal-crash census · 2023-09-01 to 2023-09-30 · Vehicle unit records
Rural vs Urban
In September 2023, urban trafficways accounted for 8 fatal crashes, an increase from 6 in September 2022. Conversely, rural trafficways saw 6 fatal crashes in the current period, a decrease from 7 in the prior period. Rural roads continue to contribute significantly to fatal crashes, despite a slight decrease year-over-year.
Rural vs Urban
Source: NHTSA FARS (Fatal Crashes) · Federal fatal-crash census · 2023-09-01 to 2023-09-30 · Crash-level records
Roadway Functional Class
Minor Arterial roadways were involved in 5 fatal crashes in September 2023, an increase from 3 in the prior period. Local roads also saw an increase, with 3 fatal crashes compared to 1 in September 2022. Principal Arterial roads, which had 5 fatal crashes in September 2022, were not explicitly listed as "Principal Arterial - Other" in the current period's top categories, indicating a shift in the functional class distribution of fatal crashes.
Roadway Functional Class
Source: NHTSA FARS (Fatal Crashes) · Federal fatal-crash census · 2023-09-01 to 2023-09-30 · Crash-level records
Roadway Ownership
State Highway Agencies were responsible for 7 fatal crashes in September 2023, a decrease from 9 in September 2022. Fatal crashes on roadways owned by Town or Township Highway Agencies increased from 3 to 4 year-over-year. City or Municipal Highway Agencies saw 3 fatal crashes in September 2023, compared to none in the prior period's top categories.
Roadway Ownership
Source: NHTSA FARS (Fatal Crashes) · Federal fatal-crash census · 2023-09-01 to 2023-09-30 · Crash-level records
Person Type
Drivers were involved in 24 fatal crashes in both September 2022 and September 2023. Passengers involved in fatal crashes increased from 7 in the prior period to 14 in the current period. Notably, pedestrians were involved in 2 fatal crashes in September 2023, whereas no pedestrian involvement was recorded in the prior period.
Person Type
Source: NHTSA FARS (Fatal Crashes) · Federal fatal-crash census · 2023-09-01 to 2023-09-30 · Crash-level records
Person Injury Severity
The number of fatal injuries (K) remained constant at 17 in both September 2022 and September 2023. Minor injuries (B) increased from 6 in the prior period to 8 in the current period. Persons with no injuries (O) increased from 3 to 11 year-over-year, while serious injuries (A) were reported in the prior period (2) but not in the current period's top categories.
Person Injury Severity
Source: NHTSA FARS (Fatal Crashes) · Federal fatal-crash census · 2023-09-01 to 2023-09-30 · Crash-level records
Occupant Safety Equipment
The use of shoulder and lap belts in fatal crashes increased from 12 instances in September 2022 to 20 in September 2023. Instances where no safety equipment was used or it was not applicable remained stable at 16 in both periods. This suggests an increase in overall safety belt usage among those involved in fatal crashes.
Occupant Safety Equipment
Source: NHTSA FARS (Fatal Crashes) · Federal fatal-crash census · 2023-09-01 to 2023-09-30 · Person-level records linked to crash events
Point of Impact
The "12 Clock Point" (front) remained the most common point of impact, with 14 instances in September 2023, a slight increase from 13 in September 2022. "Left" and "Left-Back Side" impacts each occurred 2 times in the current period, while "Left-Front Side" impacts occurred 2 times in the prior period. "Non-Collision" impacts decreased from 2 in the prior period to 1 in the current period.
Point of Impact
"Other" combines 1 smaller categories (1 records): 10 Clock Point (1).
Source: NHTSA FARS (Fatal Crashes) · Federal fatal-crash census · 2023-09-01 to 2023-09-30 · Vehicle unit records
Vehicles Per Crash
Single-vehicle fatal crashes increased from 3 in September 2022 to 6 in September 2023. Two-vehicle fatal crashes decreased from 9 in the prior period to 6 in the current period. The number of fatal crashes involving 3 vehicles remained at 1 in both periods, and 1 fatal crash involved 4 vehicles in September 2023, which was not present in the prior period.
Vehicles Per Crash
Source: NHTSA FARS (Fatal Crashes) · Federal fatal-crash census · 2023-09-01 to 2023-09-30 · Crash-level records
Data Sources & Methodology
Primary Data Source
All crash data in this report is sourced from NHTSA FARS (Fatal Crashes), accessed programmatically via the NHTSA FARS 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: NHTSA FARS 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: 2023-09-01 through 2023-09-30
- Report generated: August 5, 2026
Data Coverage
- Reporting period: 2023-09-01 through 2023-09-30 (30 days)
- Geographic scope: New Hampshire
- Total crash records analyzed: 14
- Total persons involved: 40
- Total vehicles involved: 24
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). "New Hampshire Crash Intelligence Report: September 2023." Published August 5, 2026. Reporting period: 2023-09-01 to 2023-09-30. Data source: NHTSA FARS (Fatal Crashes), NHTSA FARS Open Data. Available at: https://thatcarhitme.com/crash-data/new-hampshire/fatal/statewide/september-2023-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: NHTSA FARS (Fatal Crashes) · NHTSA FARS
Period: 2023-09-01 – 2023-09-30
Generated: August 5, 2026 · All rights reserved
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