1. Assistant Professor, Dept. of Civil and Environmental Engineering, 1 UTSA Circle, Univ. of Texas at San Antonio, San Antonio, TX 78249(corresponding author).
2. Graduate Student, Dept. of Civil and Environmental Engineering, 1 UTSA Circle, Univ. of Texas at San Antonio, San Antonio, TX 78249.
3. Research Scientist, Texas A&M Transportation Institute, Texas A&M Univ. System, 3135 TAMU, College Station, TX 77843.
4. Branch Director, Flexible Pavements, Texas Dept. of Transportation, Construction Division, Austin, TX 78717.