1. Research Scientist, Dept. of Civil & Environmental Engineering, Univ. of Illinois at Urbana-Champaign, 205 North Mathews Ave., Urbana, IL 61801 (corresponding author). ORCID: .
2. Grainger Distinguished Chair in Engineering, Director, Illinois Center for Transportation, Professor, Dept. of Civil & Environmental Engineering, Univ. of Illinois at Urbana-Champaign, 205 North Mathews Ave., Urbana, IL 61801. ORCID: