1. Transportation Engineer, Parsons Brinckerhoff, Inc., 11757 Katy Freeway Suite 500, Houston, TX 77079.
2. Assistant Professor, Dept. of Civil and Environmental Engineering, Univ. of Nevada, Reno, NV 89557.
3. Professor, Dept. of Civil Engineering, Room 304C, CE/TTI Building, Texas A&M Univ., College Station, TX.