Transportation Research Record: Journal of the Transportation Research Board, No. 2384, Transportation Research Board of the National Academies, Washington, D.C., 2013, pp. 74–84. DOI: 10.3141/2384-09 H. Ge and Y. Zhang, Zachry Department of Civil Engineering, Texas A&M University, 3136 TAMU, College Station, TX 77843-3136. J. D. Miles and P. J. Carlson, Texas A&M Transportation Institute, Texa...