1. Assistant Professor, Purdue Univ., School of Civil Engineering, 550 Stadium Mall Dr., West Lafayette, IN 47907.
2. Quality Systems Engineer, Granite Construction Inc., 1900 Glendale Ave., Sparks, NV 89431.
3. Assistant Research Professor, Center for Advanced Vehicular Systems, Mississippi State Univ., Box 5405, Mississippi State, MS 39762-5405.
4. Professor and Head, Dept. of Civil Engineering, Mississippi State Univ., McCain Engineering Building, Mississippi State, MS 39762.