1. Graduate Research Assistant, Zachry Dept. of Civil Engineering, Texas A&M Univ., TAMU 3135, College Station, TX; and Assistant Professor, Univ. of Magdalena (corresponding author).
2. Research Associate, Civil and Environmental Engineering, Univ. of Wisconsin–Madison.
3. Associate Prof., Zachry Dept. of Civil Engineering, Texas A&M Univ., TAMU 3135, College Station, TX.
4. Professor, Zachry Dept. of Civil Engineering, Texas A&M Univ., TAMU 3136, College Station, TX.
5. Associate Research Engineer, Texas Transportation Institute, Texas A&M Univ., TAMU 3135, College Station, TX.