Modelo multivariado de choques viales para usuarios vulnerables

Autores/as

DOI:

https://doi.org/10.15517/akz5sc87

Palabras clave:

pedestrian, motorcyclist, bicyclist, Area-wide, Correlation

Resumen

Diferentes autores han analizado el acontecimiento de choques viales que involucran a usuarios vulnerables, pero la mayoría de los estudios se enfocan en peatones y ciclistas. Pocos han explorado la correlación entre los tipos de accidentes y han descuidado a otro usuario vulnerable: el motociclista. Este artículo investiga la correlación entre los choques que involucran a peatones, ciclistas y motociclistas a nivel de área en Costa Rica. Se desarrollaron modelos univariados y multivariados utilizando el enfoque jerárquico bayesiano completo para relacionar los accidentes en los 489 distritos entre 2016 y 2022 con variables sociodemográficas y de exposición. Los resultados mostraron que el modelo multivariado fue más parsimonioso, exhibiendo una desviación posterior y un DIC más bajos en comparación con el modelo univariado, también la inclusión de errores aleatorios multivariados impactó tanto el ajuste del modelo como las estimaciones de los parámetros. Variables clave como los kilómetros recorridos por vehículo, la población y la proporción de hogares con vehículos mostraron mejoras significativas en sus parámetros de estimación. Además, el modelo multivariado fue más adecuado para estimar el exceso de frecuencia de accidentes. Estos hallazgos pueden ser muy útiles para futuras investigaciones que exploren la correlación entre estos tipos de accidentes, particularmente en escalas más pequeñas, como intersecciones o segmentos de carreteras.

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Publicado

2026-10-26