1. Postdoctoral Research Associate, 262E Prem S. Paul Research Center at Whittier School, Univ. of Nebraska-Lincoln, 2200 Vine St., Lincoln, NE 68583-0851 (corresponding author). ORCID: .
2. Director, Auburn University Transportation Research Institute, Auburn Univ., 1220 Shelby Center, Auburn, AL 36849; Ginn Distinguished Professor, Auburn University Transportation Research Institute, Auburn Univ., 1220 Shelby Center, Auburn, AL 36849. ORCID: .
3. Postdoctoral Research Associate, Nebraska Transportation Center, Univ. of Nebraska-Lincoln, 2200 Vine St., 262K Whittier Research Center, Lincoln, NE 68503.