Investigators: Donna Chen, Avi Hoen, Audrey K. Moruza, Yiqing Xu, Ph.D.

Investigators: T. Donna Chen, Afrida Raida, Erin Robartes, Ph.D.

Investigators: H. Celik Ozyildirim, Ph.D., P.E., Harikrishnan Nair, Ph.D., P.E., M. Shabbir Hossain, Ph.D., P.E.

Investigators: Gerardo Flintsch, Ph.D., Virginia Tech Transportation Institute, Brian K. Diefenderfer, Ph.D., P.E., Kazuo Kuchiishi, Ph.D.

Investigators: Audrey K. Moruza, James S. Gillespie

Investigators: Benjamin Bowers, Ph.D., Auburn University, Brian K. Diefenderfer, Ph.D., P.E., Ilker Boz, Ph.D., P.E.

Investigators: Gabriel Arce, Ph.D., P.E., H. Celik Ozyildirim, Ph.D., P.E.

Investigators: Bryan Smith, Candice Entwistle, Stacey D. Diefenderfer, Ph.D., P.E.

Investigators: Harikrishnan Nair, Ph.D., P.E., M. Shabbir Hossain, Ph.D., P.E.