The Regional Transportation Planning and High-Speed Rail Research Group at the Massachusetts Institute of Technology (MIT) is no longer actively pursuing research projects.

The research group was directed by Joseph Sussman, JR East Professor, Emeritus and Professor of Civil and Environmental Engineering and Engineering Systems, Emeritus until his retirement in January 2017. Drawing members from the Department of Civil and Environmental Engineering (CEE), the Institute of Data, Systems, and Society (IDSS), and the Department of Urban Studies and Planning (DUSP), the group's research focused on regional transportation planning with special emphasis on high-speed rail (HSR).

This website is no longer actively updated, but is maintained as a reference for those interested in the group's work on strategic regional transportation planning, high-speed rail, complex sociotechnical systems, and the CLIOS Process (teaching note, 2014).