He received his PhD in Civil Engineering from University of California at Berkeley in 1995. He has worked as a postdoctoral researcher at the PATH program of the University of California at Berkeley. He is the past paper review coordinator for the Intelligent Transportation Systems Committee of Transportation Research Board. He is currently the associate editor of IEEE Transaction on Intelligent Transportation Systems. He is the author/coauthor of over 70 papers. His research area covers traffic control, logistics systems analysis, and network optimization.