HighlightsThis study aimed to investigate the effects of jobs-housing balance on traffic safety.S-GWR links crash frequency at traffic analysis zone (TAZ) with jobs-housing ratio and other factors.S-GWR provides better fitness than the generalized linear model.Jobs-housing ratio affects traffic safety at TAZ when other contributing factors are controlled.Interactive effects exist between jobs-housing ratio and other contributing factors.
AbstractThis study aimed to investigate the effects of jobs-housing balance on traffic safety. The crash, demographic characteristics, employment, road network, household characteristics and traffic data were collected from the Los Angeles in 2010. One-way ANOVA tests indicated that the jobs-housing ratio significantly affects traffic safety in terms of crash frequency at traffic analysis zone (TAZ). To quantify the safety impacts of jobs-housing balance, the semi-parametric geographically weighted Poisson regression (S-GWPR) was further used to link crash frequency at TAZ with jobs-housing ratio and other contributing factors. The S-GWPR provides better fitness to the data than do the generalized linear regression, as the S-GWPR accounts for the spatial heterogeneity. The S-GWPR results showed that the jobs-housing relationship has a significant association with crash frequency at TAZ when the factors of traffic, network, and household characteristics are controlled. Crash frequency at TAZ level increases with an increase in the jobs-housing ratio. To further investigate the interactive effects between jobs-housing ratio and other factors, a comparative analysis was conducted to compare the variable elasticities under different jobs-housing ratios. The results indicate considerable interactive effects that traffic conditions and road network characteristics have different effects on crash frequency under various jobs-housing ratios.
Investigating the relationship between jobs-housing balance and traffic safety
Accident Analysis and Prevention ; 107 ; 126-136
2017-08-07
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Investigating the relationship between jobs-housing balance and traffic safety
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