What Is the Extent of Harm in Rail-Pedestrian Crashes?

Khattak, Asad J.; Clarke, David B.; Liu, Jun; Wang, Xin; Zhang, Meng · 2016 · ROSA P / National University Rail Center (U.S.)

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Summary

This study investigates the extent of harm and injury severity in rail-pedestrian crashes, specifically focusing on trespassing incidents at non-crossing locations and highway-rail grade crossings. Motivated by the high fatality rates associated with rail trespassing and the lack of safety guidance for non-crossing areas, the research aims to identify correlates of injury severity, including pre-crash behaviors, sociodemographics, environmental factors, and traffic controls. The project utilizes ten years of crash data (2004–2013) provided by the Federal Railroad Administration, comprising 8,794 non-crossing trespassing crashes and additional data for crossing incidents. The methodology employs spatial analysis and statistical modeling to uncover geographic variations in crash outcomes. For non-crossing crashes, the authors use Geographically Weighted Logistic Regression (GWLR) to account for spatial heterogeneity, relaxing the assumption that relationships between variables and injury severity are constant across the United States. Kernel density estimation visualizes crash distributions. For grade crossings, the study compares injury severity between crossings and non-crossings and uses path analysis to quantify the direct and indirect associations of passive controls (e.g., crossbucks) and active controls (e.g., gates, flashing lights) with pre-crash behaviors and injury outcomes. Key findings indicate that non-crossing trespassing crashes are severe, with 52.1% resulting in fatalities. Pre-crash behaviors are significant predictors of injury severity; lying or sleeping on tracks is strongly associated with higher fatality probabilities, whereas dynamic actions like driving, riding bicycles, or crossing tracks are associated with lower fatality risks, likely due to greater mobility and ability to evade. Demographic analysis reveals that seniors are more likely to be killed than adults, while youths are less likely. Crucially, the GWLR results demonstrate that the relationships between crash factors and injury severity are non-stationary, meaning correlations vary significantly by location and cannot be generalized nationally. At grade crossings, active controls are associated with lower driver injuries compared to passive controls, partly through indirect effects on pre-crash behaviors. The significance of this research lies in its demonstration that rail safety countermeasures must be regionally targeted rather than uniformly applied. By identifying spatial variations in risk factors, the study provides stakeholders with insights to customize safety improvements, such as public education and surveillance, to specific geographies. The findings emphasize the critical role of pre-crash behaviors in determining injury outcomes and highlight the need for deeper understanding of motorist gate-violation behaviors at grade crossings. This approach allows for more effective, location-specific strategies to reduce trespassing fatalities and injuries.

Key finding

Lying or sleeping on or near rail tracks is associated with a 60% higher odds of fatality compared to the base category of pre-crash actions.

Methodology

dataset

Sample size: 8794

Provenance

The full processing record for this entry. Every stage of this paper's journey through the pipeline is logged — what ran, with which tool and model, how many attempts it took, and when it last completed. Discovered via bulk_ingest_rosap on 2026-05-23 (6 acquisition events logged).

StageOutcomeToolModelPromptAttemptsCompleted
discover success rosap 2 2026-05-23
archive success 1 2026-05-23
extract success cached 2 2026-06-10
clean success 1 2026-06-01
chunk success 1 2026-06-01
embed success 1 2026-06-02
enrich success 1 2026-05-23
promote success 1 2026-05-23
summarize success llm qwen3.6-27b-prismaquant summ-v5 3 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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