1. Research Officer, Nottingham Transportation Engineering Centre, Department of Civil Engineering, University of Nottingham, UK
2. Assistant Professor, Department of Civil Engineering, University of Engineering and Technology, Taxila, Pakistan
3. Graduate Research Assistant, Nottingham Transportation Engineering Centre, Department of Civil Engineering, University of Nottingham, UK
4. Research Fellow, Nottingham Transportation Engineering Centre, Department of Civil Engineering, University of Nottingham, UK
5. Professor of Civil Engineering, Nottingham Transportation Engineering Centre, Department of Civil Engineering, University of Nottingham, UK
6. Head of Department, Department of Chemical and Environmental Engineering, University of Nottingham, University Park, UK