Wyoming’s Comprehensive Report on Traffic Crashes 2004
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Summary
This document presents the Wyoming Department of Transportation’s comprehensive statistical analysis of traffic crashes for the year 2004. The report serves as a detailed data compilation intended to inform highway safety programs and public understanding of crash trends within the state. It aggregates data from police reports and crash databases to provide a granular view of incident frequency, severity, and contributing factors across Wyoming’s counties and roadway systems. The methodology involves the categorization of 15,574 total traffic crashes into three severity levels: 142 fatal, 3,960 injury, and 11,472 property-damage-only incidents. The analysis breaks down these figures by geographic location (county and rural vs. urban), temporal factors (month, day of week, and holiday periods), and specific crash elements. The report examines human factors such as driver age, sex, alcohol involvement, and safety equipment usage; environmental conditions including weather, road surface, and lighting; and vehicle characteristics such as type, mechanical defects, and speed. Specialized sections isolate data for specific demographics and vehicle classes, including drivers aged 14–20, trucks, school buses, and motorcycles. Key findings indicate that Laramie County recorded the highest volume of crashes (2,407) and fatal crashes (22), while Niobrara County had the fewest. Motor vehicle-to-motor vehicle collisions were the most frequent crash type, whereas overturns were the most common type of fatal crash. November saw the highest number of total crashes, and Fridays recorded the highest daily frequency. Alcohol was involved in 50 fatal crashes, representing 35.2% of all fatalities. Safety equipment usage was reported at 88%. The data highlights that rural areas accounted for 6,541 crashes compared to 9,033 in urban areas. Specific analyses reveal that 4,316 crashes involved drivers aged 14–20, and 1,495 involved trucks. The report also details injury severities, noting 164 total fatalities and 6,114 non-fatal injuries, with breakdowns by occupant position and ejection status. The significance of this report lies in its role as a foundational resource for traffic safety planning and policy development in Wyoming. By providing extensive historical comparisons (1990–2004) and detailed demographic and environmental correlations, the document allows stakeholders to identify high-risk areas, times, and behaviors. It supports targeted interventions for specific groups, such as young drivers and commercial truck operators, and informs infrastructure improvements based on crash types and roadway elements. The inclusion of economic loss estimates and holiday crash statistics further aids in resource allocation and public awareness campaigns.
Key finding
Wyoming recorded 15,574 traffic crashes in 2004, resulting in 164 fatalities and 6,114 non-fatal injuries, with Laramie County experiencing the highest number of total crashes and fatal incidents.
Methodology
dataset
Provenance
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| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
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| summarize | success | llm | qwen3.6-27b-prismaquant | summ-v5 | 42 | 2026-06-10 |
| tag | success | vector_similarity | — | — | 19 | 2026-06-11 |
| verify | success | — | — | — | 2 | 2026-06-10 |
Summary generated by qwen3.6-27b-prismaquant on 2026-06-10; verification: verified.
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- Empirical Findings: crash risk outcomes