1. Graduate Research Assistant, Dept. of Civil, Architectural and Environmental Engineering, Univ. of Texas at Austin, 301 E. Dean Keeton St., Austin, TX 78712-1094 (corresponding author). ORCID: .
2. Professor, Dept. of Civil, Architectural and Environmental Engineering, Univ. of Texas at Austin, 301 E. Dean Keeton St., Austin, TX 78712-1094.
3. Senior Research Engineer, Center for Transportation Research, Univ. of Texas at Austin, 3925 W. Braker Lane, Suite 4 11080, Austin, TX 78759.