1. Graduate Research Assistant, Center for Research and Education in Advanced Transportation Engineering Systems (CREATES), Rowan Univ., NJ.
2. Postdoctoral Research Associate, Center for Research and Education in Advanced Transportation Engineering Systems (CREATES), Rowan Univ., NJ.
3. Manager, Center for Research and Education in Advanced Transportation Engineering Systems (CREATES), Rowan Univ., NJ.
4. Professor, Dept. of Civil and Environmental Engineering, Rowan Univ., and Director, CREATES.
5. Research Civil Engineer, US Army Corps of Engineers, Engineering Research and Development Center, Cold Regions Research and Engineering Laboratory, Hanover, NH.