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Geospatial and econometric approaches or older driver safety: Analysis of crash injury severity of regional highways

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  • Daiquan Xiao
  • Dajie Zuo
  • Xuecai Xu
  • Quan Yuan

Abstract

This study tried to focus on the older drivers’ group and explore the impact factors of injury severity involving older drivers from geo-spatial analysis. To reach the goal, a spatial analysis was proposed employing geographic information systems (GIS) with a case study application to two counties in Nevada. First, crash clusters were explored using Density-Based Spatial Clustering of Applications with Noise (DBSCAN) approach to investigate the spatial crash pattern for older drivers, and determine high risk locations of injury severity. Next, Bayesian spatial binary probit model was presented in order to determine the significant impact factors of injury severity involving older drivers. It was found that at-fault driver condition and vehicle condition, not-at-fault vehicle action and road factors were significant factors for injury severity of older drivers. Results revealed that DBSCAN provides a solid option for hotspot identification of injury severity and Bayesian spatial binary probit model addresses the factor determinants spatially. The GIS-based spatial analysis can benefit more reliable older driver-concentrated evaluation and injury severity analysis.

Suggested Citation

  • Daiquan Xiao & Dajie Zuo & Xuecai Xu & Quan Yuan, 2025. "Geospatial and econometric approaches or older driver safety: Analysis of crash injury severity of regional highways," PLOS ONE, Public Library of Science, vol. 20(1), pages 1-20, January.
    • Handle: RePEc:plo:pone00:0307927
    DOI: 10.1371/journal.pone.0307927
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    References listed on IDEAS

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    1. Ulak, Mehmet Baran & Ozguven, Eren Erman & Spainhour, Lisa & Vanli, Omer Arda, 2017. "Spatial investigation of aging-involved crashes: A GIS-based case study in Northwest Florida," Journal of Transport Geography, Elsevier, vol. 58(C), pages 71-91.
    2. Asbridge, Mark & Desapriya, Ediriweera & Ogilvie, Rachel & Cartwright, Jenny & Mehrnoush, Vahid & Ishikawa, Takuro & Nuwan Weerasinghe, Dinesh, 2017. "The impact of restricted driver’s licenses on crash risk for older drivers: A systematic review," Transportation Research Part A: Policy and Practice, Elsevier, vol. 97(C), pages 137-145.
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