Pennsylvania: City streets safer than suburban roads, study finds

New research from the University of Pennsylvania shows that denser cities and towns can save lives.

The four-year-long study compared Pennsylvania Department of Transportation records of all car accidents in a five-county region with population data, socioeconomic factors, different road types and other factors. The resulting analysis, which examined collision data from 2010 and 2014, showed that the densest parts of the region — like downtown Philly or suburban town centers — had lower accident rates than more sprawling areas.