1. Ph.D. Student, Dept. of Civil Engineering, Univ. of Texas at Arlington, Arlington, TX.
2. Postdoc Associate, Dept. of Civil Engineering, Univ. of Texas at Arlington, Arlington, TX.
3. Transportation Engineer, Texas Dept. of Transportation, Houston, TX.
4. Transportation Engineering Supervisor, Texas Dept. of Transportation, Houston, TX.
5. Associate Professor, Dept. of Civil Engineering, Univ. of Texas at Arlington, Arlington, TX.