1. Founder Professor of Engineering, Illinois Center for Transportation Director, Dept. of Civil and Environmental Engineering, Univ. of Illinois at Urbana-Champaign, 205 N Mathews MC-250, Urbana, IL 61801 (corresponding author).
2. Graduate Research Assistant, Advanced Transportation Research and Engineering Laboratory, Dept. of Civil and Environmental Engineering, Univ. of Illinois at Urbana-Champaign, 1611 Titan Dr., Rantoul, IL 61866.
3. Senior Software Engineer, Research Engineer, Geophysical Survey Systems, Inc., N. Salem, NH.