1. Project Associate, AgileAssets Inc., 6212 Shanda Dr., Apt D, Raleigh, NC 27609.
2. Postdoctoral researcher, School of Civil Engineering, Purdue Univ., 550 Stadium Mall Dr., West Lafayette, IN 47907 (corresponding author).
3. Assistant Professor of Civil Engineering, Purdue Univ., 550 Stadium Mall Dr., West Lafayette, IN 47907.
4. Edgar B. and Hedwig M. Olson Distinguished Professor of Civil Engineering and Directory of Joint Transportation Research Program, Purdue Univ., 550 Stadium Mall Dr., West Lafayette, IN 47907.
5. Charles Pankow Professor of Civil Engineering, Purdue Univ., 550 Stadium Mall Dr., West Lafayette, IN 47907.