Crashes on and Near College CampusesJournal of the American Planning Association, 2014

Explaining Transit RidershipTransportation Letters, 2013

Addressing Women’s Fear of Victimization in Transportation SettingsUrban Affairs Review, 2009

The Factors Influencing Transit RidershipTransportation Research Part A: Policy and Practice, 2009

Responding to Security Threats in the Post-9:11 Era: A Portrait of U.S. Urban Public TransitPublic Works Management & Policy, 2006

Rail Transit Security in an International Context: Lessons from Four CitiesUrban Affairs Review, 2006

From Policy and Response to System Design and Operations: Inter-Governmental Transit Security Planning in the U.S., Journal of Public Transportation, 2005

Antiterrorism Security and Surface Transportation Systems: A Review of Case Studies and Current TacticsTransportation Research Record, 2003


A Comparative Analysis of Pedestrian and Bicyclist Safety Around University Campuses, 2014

Zen in the Art of Travel Behavior, 2010 (project website)

How to Ease Women’s Fear of Transportation Environments, 2009

Designing and Operating Safe and Secure Transit Systems, 2005

Analyzing the Determinants of Transit Ridership Using a Two-Stage Least Squares Regression on a National Sample of Urbanized Areas, 2003

The Factors Influencing Transit Ridership, 2003


From Plows to Combines: Homestead Heritage Parkway Planning Summary and Guidance Document, 2006

Tackling Traffic Congestion: Summary of Proceedings from the Annual Symposium Series on the Transportation, Land Use, Environment Connection, 2003


Securing Public Transit Systems, Chapter 8 in Securing Transportation Systems, 2016