A nationwide analysis of 2024 fatal crash data reveals that roadway danger in the United States shifts dramatically throughout the year, with no single month dominating risk across all states. The study, conducted by Sweet James examined fatal motor‑vehicle crashes across all 50 states and the District of Columbia, identifying the deadliest month for each state and for five major crash categories: overall fatalities, DUI‑involved crashes, speeding‑related crashes, distracted‑driving crashes, and pedestrian fatalities.
The findings show that while October stands out as the most common peak month for fatal crashes overall, other crash types follow entirely different seasonal patterns. The result is a complex portrait of roadway risk that varies by region, driving behavior, and environmental conditions.
Overall Fatal Crashes: Fall Takes the Lead
October emerged as the most dangerous month for fatal crashes nationwide. It was the deadliest month in nearly half the country.
National Overview
- Total fatal crashes: 36,297
- October: 3,369
- August: 3,342
- September: 3,277
Regional Breakdown
| Region | Most Common Deadliest Month |
|---|---|
| South | October |
| Midwest | September |
| Northeast | July and October |
| West | Mixed patterns |
States With Highest October Rates
- Wyoming
- Mississippi
- Montana
- South Carolina
- Alabama
These states share characteristics such as rural highways and lower populations, which amplify per‑capita fatality rates.
DUI Fatalities: Late Summer Danger
Impaired‑driving crashes peaked in September for most states, with June close behind.
National DUI Totals
- Total DUI‑related fatal crashes: 5,477
- September: 534
- June: 519
- August: 509
State-Level Trends
| State | Peak Month | Notes |
|---|---|---|
| Tennessee | June/September | Highest rate |
| West Virginia | September | Elevated risk |
| Oregon | June | Seasonal spikes |
| Alaska | June | Summer danger |
| Connecticut | June | Early‑summer peak |
The alignment between DUI peaks and football season is notable, with Labor Day weekend historically showing significantly elevated DUI fatality risk.
Speeding Fatalities: May Dominates
Speeding‑related crashes showed the strongest single‑month trend of any category. May was the deadliest month in 33 states.
National Speeding Totals
- Total speeding fatalities: 10,203
- May: 962
- September and August followed
States With Highest Speeding Rates
- Tennessee
- Oregon
- Wyoming
- Mississippi
- Montana
May’s timing aligns with the start of summer travel, increased teen driving, and more motorcycles on the road.
Distracted Driving: Spring Spike
Distracted‑driving fatalities peaked in March for most states.
National Distracted‑Driving Totals
- Total distracted‑driving fatalities: 2,955
- March dominated state peaks
- June and February followed
States With Highest Rates
- District of Columbia
- South Carolina
- Kansas
- Tennessee
- Oklahoma
Spring travel and unfamiliar roads may contribute to the spike, along with increased reliance on navigation systems.
Pedestrian Fatalities: Winter Risk
Pedestrian‑involved fatal crashes were most likely to occur in January.
National Pedestrian Totals
- Total pedestrian fatalities: 7,049
- November: 728 (highest national total)
- October and December followed
States With Highest Rates
- Nebraska
- Tennessee
- Mississippi
- Nevada
- District of Columbia
Reduced daylight and holiday travel contribute to winter pedestrian danger.
Seasonal Patterns at a Glance
| Crash Type | Peak Month | Notes |
|---|---|---|
| Overall Fatalities | October | Fall danger |
| DUI | September | Late‑summer risk |
| Speeding | May | Start of summer |
| Distracted Driving | March | Spring travel |
| Pedestrian | January | Winter darkness |
Conclusion
The study highlights how roadway danger shifts throughout the year. Each crash type follows its own seasonal pattern, shaped by environmental conditions, travel behavior, and driver habits. Understanding these trends is essential for improving roadway safety and reducing fatalities