Do Denser Neighborhoods Have Safer Streets? Population Density and Traffic Safety in the Philadelphi


Led by PISC Senior Scholar Erick Guerra, Xiaoxia Dong, and PISC Senior Scholar Michelle Kondo, this study investigated relationships between neighborhood socio-demographics, urban form, roadway characteristics, traffic collisions, injuries, and fatalities on the Philadelphia region’s streets from 2010 to 2014. Paying particular attention to neighborhood population density, results indicated that streets in denser neighborhoods had fewer overall collisions, injuries, and fatalities, highlighting the importance of population density in traffic safety research and policy.

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