1. Graduate Research Assistant, Dept. of Civil and Environmental Engineering, Michigan Tech Transportation Institute, Michigan Technological Univ., Houghton, MI 49931 (corresponding author).
2. Graduate Research Assistant, Dept. of Civil and Environmental Engineering, Michigan Tech Transportation Institute, Michigan Technological Univ., Houghton, MI 49931.
3. Assistant Professor, Dept. of Civil and Environmental Engineering, Michigan Tech Transportation Institute, Michigan Technological Univ., Houghton, MI 49931.
4. Associate Professor, Dept. of Civil and Environmental Engineering, Michigan Tech Transportation Institute, Michigan Technological Univ., Houghton, MI 49931.
5. Research Scientist, Michigan Tech Research Institute, Michigan Technological Univ., Ann Arbor, MI 48105.
6. Assistant Research Scientist, Michigan Tech Research Institute, Michigan Technological Univ., Ann Arbor, MI 48105.
7. Senior Research Scientist, Michigan Tech Research Institute, Michigan Technological Univ., Ann Arbor, MI 48105.
8. Codirector, Michigan Tech Research Institute, Michigan Technological Univ., Ann Arbor, MI 48105.
9. Research Associate, Michigan Tech Research Institute, Michigan Technological Univ., Ann Arbor, MI 48105.