Dozens of cyclists and pedestrians are killed each year in Philadelphia. An injury epidemiologist explains how to better protect bike lanes, slow drivers down and reduce collisions - lessons that could apply in many other cities, too. https://theconversation.com/dozens-of-cyclists-and-pedestrians-are-killed-each-year-in-philly-an-injury-epidemiologist-explains-how-to-better-protect-bike-lanes-slow-drivers-down-and-reduce-collisions-236915 #bikesafety #cycling #traffic