Graduate Research Assistant
Dwight David Eisenhower Transportation Graduate Fellow

Greg's research explores crowdsourcing for participatory planning, particularly through cases in sustainable transportation and health. Currently, ​he is a Ph.D. candidate and member of the University of Texas at Austin School of Architecture's Urban Information Lab working on his dissertation, called "Sociotechnical Co-production of Planning Information: Opportunities and Limits of Crowdsourcing for the Geography and Planning of Bicycle Transportation". He also works as a researcher with the Texas A&M Transportation Institute, leading projects such as Street Noise Relationship to Vulnerable Road User Safety.

Previously, Greg worked as a state park planner and regional transportation planner, and taught Transportation Systems at Texas State University. Greg is a member of the American Institute of Certified Planners, bicycles whenever possible, and sometimes tweets @gregpgriffin.


Griffin, G. P., & J. Jiao. (in press) “Crowdsourcing Bike Share Station Locations: Evaluating Participation and Placement.” Journal of the American Planning Association.

Jiao, J., Holmes, M., & Griffin, G. P. (online first). Revisiting Image of the City in Cyberspace: Analysis of Spatial Twitter Messages During a Special Event. Journal of Urban Technology

Griffin, G. (2017). Connecting the Dots. Planning, April.

Griffin, G., & Sener, I. (2016). Public Transit Equity Analysis at Metropolitan and Local Scales: A Focus on Nine Large Cities in the US. Journal of Public Transportation, 19(4), 126–143.

Griffin, G. P., & Sener, I. N. (2016). Planning for Bike Share Connectivity to Rail Transit. Journal of Public Transportation, 19(2).

Griffin, G. P., & Jiao, J. (2015). Crowdsourcing Bicycle Volumes: Exploring the role of volunteered geographic information
and established monitoring methods
. Journal of the Urban and Regional Information Systems Association 27(1), 57–66. 

Griffin, G. P., & Jiao, J. (2015). Where does Bicycling for Health Happen? Analysing Volunteered Geographic Information through Place and Plexus. Journal of Transport & Health 2(2). 

Griffin, G. P. (2015). The City as Interface, by Martijn de Waal. Urban Geography, 36(4), 625–627.

Griffin, G.P., K. Nordback, T. Götschi, E. Stolz, S. Kothuri. (2014) Transportation Research Circular E-C183: Monitoring Bicyclist and Pedestrian Travel
and Behavior
. Washington, D.C.: Transportation Research Board of the National Academy of Sciences.

Cowley, J.S. and G.P. Griffin. (2012). Microparticipation with Social Media for Community Engagement in Transportation PlanningTransportation Research Record: Journal of the Transportation Research Board 2307: 90-98.

photo of Greg Griffin
  • Bicycle and Pedestrian Planning
  • Co-productive Planning Theory
  • Crowdsourcing
  • GIS
  • Sustainable Transportation