About Traffic21


With seed funding from the Henry Hillman Foundation, Carnegie Mellon University (CMU) created Traffic21 to stimulate a broad community partnership to identify, refine, and deploy “intelligent transportation system” technology advancements to the Pittsburgh region’s transportation system. Our goal is to leverage projects that will brand the region as an internationally-recognized place for “smart transportation” thus attracting further investment in both research and commercialization.


For more than 150 years, southwestern Pennsylvania has developed a transportation infrastructure defined by industry and geography. Today, more than ever, transportation is essential for our economic and cultural vitality. More than a million residents of southwestern Pennsylvania and countless visitors navigate our roads each day. Pittsburgh and its surroundings have garnered an impressive reputation as one of the most desirable places to live, as noted by publications including Business Week, The Economist, and Rand McNally’s Places Rated Almanac. We have a reputation for re-inventing our economy through green innovation and technology. Traffic21 strengthens Southwestern Pennsylvania’s reputation considerably with “intelligent traffic,” which embraces cost-effective, efficient transportation systems and technologies.

Traffic21 helps the region gain access to state and federal funds to deploy systems that incorporate smart, cost-saving features. This places Pittsburgh at the forefront of the intelligent transportation field nationally, and enhance the region’s ability to attract new employers and improve its economy. Moreover, Traffic21 provides citizens with the independence, safety, improved health and transportation efficiencies required to accommodate the changing needs of businesses, families and cultural amenities.

While achieving these laudable goals, we also spur the growth of marketable transportation technologies. Simply put, Traffic21 aligns perfectly with existing efforts of government and community leaders to make Southwestern Pennsylvania a greener, “smart” city and a model for the nation.


Traffic21 is directed by Chris Hendrickson, Hamerschlag University Professor, College of Engineering and Heinz College. In this role, Hendrickson helps identify external funding opportunities and matches them with promising research, often working in collaboration with Carnegie Mellon’s Offices of Government and Corporate Relations.  Chris Hendrickson is a member of the National Academy of Engineering and Editor-in-chief of the ASCE J. of Transportation Engineering.  His research, teaching and consulting are in the general area of engineering planning and management, including design for the environment, project management, transportation systems, finance and computer applications.

Stanley Caldwell is Executive Director of Traffic21. He started the highly acclaimed Traffic21 blog. Before coming to CMU, he served as the Executive Director of US Senator Arlen Specter’s Pittsburgh Office with an emphasis on federally funded transportation and infrastructure projects. He founded a community relations consulting firm and worked for the Southwestern Pennsylvania Commission. He received his Masters of Public Policy and Management degree from the University of Pittsburgh. Stan also serves as Deputy Executive Director of the Technologies for Safe and Efficient Transportation University Transportation Center.

Courtney Ehrlichman is Deputy Executive Director of Traffic21.  Courtney has was previously a researcher and Special Faculty at CMU, where she spun out the Flight School Fellowship in 2010, which she still directs today.  She has also designed and/or managed projects at a number of non-profit organizations including the Friendship Development Associates, cityLAB, Waffle Shop, Conflict Kitchen, and Red Star Ironworks. Overall, Ms. Ehrlichman has personally raised over $2.5 million in federal, state, and private funds to implement the projects she has designed and managed. She holds a Masters of Public Management from the Heinz College at Carnegie Mellon University and a bachelors degree Urban Planning and Architectural Studies from the University of Pittsburgh.