Exploration of the relationship among roadway characteristics, operating speed, and crashes for city streets using path analysis.
Accid Anal Prev
; 150: 105896, 2021 Feb.
Article
en En
| MEDLINE
| ID: mdl-33285446
ABSTRACT
Estimating the speed-crash relationship has long been a focus area of interest in roadway safety analysis. Because of many confounding factors that may influence both speeds and crashes, the relationship cannot be appropriately established without considering the corresponding roadway contexts and accounting for their effects on speeds and crashes. This paper investigates the speed-crash relationship for city streets by jointly modeling speed, roadway characteristics, and crashes using a path analysis approach that has been recently introduced into safety analysis while incorporating a wide range of roadway and traffic related variables and additional speed measures. The results from the coherent path analysis identified multiple speed measures of interest that have a statistically significant association with crashes as well as having intuitive and useful interpretation. The results also supported a positive relationship between speed variability and crash occurrence (i.e., larger spread/variability in operational speed is associated with more crashes).
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Conducción de Automóvil
/
Accidentes de Tránsito
Tipo de estudio:
Prognostic_studies
Límite:
Humans
Idioma:
En
Revista:
Accid Anal Prev
Año:
2021
Tipo del documento:
Article