Center for Injury Research and Prevention

Transportation Planning for Safe Urban Mobility

From bike lanes to pedestrian plazas, the urban transportation systems of American cities – and Philadelphia specifically – are becoming more multimodal. Yet the increasing number of cyclists and pedestrians has led to a rise in conflicts and crashes. This is a public health epidemic requiring transportation planning science: Pedestrians are sustaining fatal and serious injuries because of crashes at dangerous intersections in Philadelphia’s University City.

Safe Urban Mobility: A User-Based Safety Analysis of the Chestnut Street Bike Lane


Chestnut Street in University City, Philadelphia

This transportation planning research project collects the missing user-based information on vulnerable road users (pedestrians and cyclists) using Eye Tracking Glasses, thereby 1.) enabling the study of the new protected bike lane on Chestnut Street in West Philadelphia/University City and 2.) assisting the city of Philadelphia in deploying safe urban infrastructure.

The initial results indicate the most “high-stress” portions of the bike lane; develop metrics to compare stress and safety between protected and unprotected bike lanes; and how signage can be improved to maximize safety information to cyclists.  

Chestnut Street Bike Lane Evaluation Report, 2017

Read more in this Philadelphia Inquirer article. 

Principal InvestigatorMegan S. Ryerson, PhD, CIRP Senior Fellow; Funding: University of Pennsylvania Perelman School of Medicine

Read about pedestrian safety in our Research In Action blog.