Executive Leadership

Raj Rajkumar Headshot

Raj Rajkumar


Fax: 412-268-1124

Raj Rajkumar is the director of Metro21 Institute, Mobility21, a USDOT National University Transportation Center for Mobility. Rajkumar is the George Westinghouse professor at CMU’s Department of Electrical and Computer Engineering. Raj also serves as Co-Director of the General Motors-Carnegie Mellon Information Technology Collaborative Research Laboratory. His work is primarily in cyber-physical systems, such as autonomous driving and vehicular networks, and wireless/sensor networks, including the creation of Nano-RK, the reservation-based real-time operating system (RTOS). Raj has won six best paper awards, and his paper on Priority Inheritance Protocols proposed a solution to ‘priority inversion problem,’ allowing for the success of the 1997 Mars Pathfinder Mission.

Photo of Stan Caldwell

Stan Caldwell



Stan Caldwell is the Executive Director of Traffic21 Institute, and Mobility21, a USDOT National University Transportation Center for Mobility. He started the highly acclaimed Traffic21 blog. In 2014, Stan was appointed Adjunct Associate Professor of Transportation and Public Policy at CMU, where he teaches ITS courses and advises student projects. Additionally, Stan serves as the Director of State Relations for CMU’s office of Government Affairs. Before joining CMU, Stan served as the Executive Director to U.S. Senator Arlen Specter’s Pittsburgh Office, in addition to serving for many other Pennsylvania elected officials. Stan received his Master of Public Policy and Management degree from the University of Pittsburgh.

Photo of LIsa Kay Schweyer

Lisa Kay Schweyer



Lisa Kay Schweyer serves as the Program Manager for the Carnegie Mellon University Traffic21 Institute, which houses the Mobility21 National University Transportation Center. She started her transportation career in 2003, helping commuters find and employers learn about transportation options as she managed the regional ridesharing CommuteInfo program for Southwestern Pennsylvania. From 2016 – 2018, Lisa Kay led the Vanpool Council for ACT.  Her previous work experience includes association management, volunteer coordination, and fundraising. She received her Bachelor of Arts degree in Political Science from Indiana University of Pennsylvania and her Masters of Public Management degree from CMU.

Mobility21 University Partner Contacts

Mobility21 University of Pennsylvania Director

Rahul Mangharam, University of Pennsylvania
+1 215 573-3636
200 South 33rd Street
Department of Electrical and Systems Engineering
University of Pennsylvania
Philadelphia, PA 19104

Photo of Umit Ozunger

Mobility21 Ohio State Director

Ümit Özgüner, The Ohio State University
+1 614 292-5216
Electrical & Computer Engineering
Ohio State University
420 Dreese Laboratories
2015 Neil Avenue
Columbus, OH 43210

Justin Starr CCAC

Mobility21 CCAC Director

Justin Starr, Community College of Allegheny County
+ 1 412 639-5771
Assistant Professor of Mechatronics
West Hills Center, N2203
1000 McKee Road
Oakdale, PA 15071