Investigating the Risk Factors Associated with Injury Severity in Pedestrian Crashes in Santiago, Chile

Angelo Rampinelli, Juan Felipe Calderón, Carola A. Blazquez, Karen Sauer-Brand, Nicolás Hamann, José Ignacio Nazif-Munoz

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Pedestrians are vulnerable road users that are directly exposed to road traffic crashes with high odds of resulting in serious injuries and fatalities. Therefore, there is a critical need to identify the risk factors associated with injury severity in pedestrian crashes to promote safe and friendly walking environments for pedestrians. This study investigates the risk factors related to pedestrian, crash, and built environment characteristics that contribute to different injury severity levels in pedestrian crashes in Santiago, Chile from a spatial and statistical perspective. First, a GIS kernel density technique was used to identify spatial clusters with high concentrations of pedestrian crash fatalities and severe injuries. Subsequently, partial proportional odds models were developed using the crash dataset for the whole city and the identified spatial clusters to examine and compare the risk factors that significantly affect pedestrian crash injury severity. The model results reveal higher increases in the fatality probability within the spatial clusters for statistically significant contributing factors related to drunk driving, traffic signage disobedience, and imprudence of the pedestrian. The findings may be utilized in the development and implementation of effective public policies and preventive measures to help improve pedestrian safety in Santiago.

Original languageEnglish
Article number11126
JournalInternational Journal of Environmental Research and Public Health
Issue number17
Publication statusPublished - Sept 2022


  • kernel density estimation
  • partial proportional odds
  • pedestrian safety
  • spatial analysis
  • traffic injury

ASJC Scopus subject areas

  • Pollution
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis


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