1. Ph.D. Candidate, Graduate Research Assistant, Texas A&M Transportation Institute, Texas A&M Univ. System, 3135 TAMU, CE/TTI Bldg. 508K, College Station, TX 77843 (corresponding author).
2. Ph.D. Candidate, Graduate Research Assistant, Texas A&M Transportation Institute, Texas A&M Univ. System, 3135 TAMU, CE/TTI Bldg. 508K, College Station, TX 77843.
3. Postdoctoral Research Associate, Texas A&M Transportation Institute, Texas A&M Univ. System, 3135 TAMU, CE/TTI Bldg. 508B, College Station, TX 77843.
4. Associate Research Engineer, Texas A&M Transportation Institute, Texas A&M Univ. System, 3135 TAMU, CE/TTI Bldg. 503C, College Station, TX 77843.
5. Professor, Fred J. Benson Chair, Zachry Dept. of Civil Engineering, Texas A&M Univ., 3136 TAMU, CE/TTI Bldg. 503A, College Station, TX 77843.