1. Professor and Coordinator, Centre of Transportation Engineering and Transportation Engineering Section, Dept. of Civil Engineering, Indian Institute of Technology, Roorkee-247667 (Uttaranchal), India.
2. Senior Lecturer, Dept. of Civil Engineering, GZS College of Engineering and Technology, Bathinda - 151 001, (Punjab), India.
3. Associate Professor, Transportation Engineering Section, Dept. of Civil Engineering, Indian Institute of Technology, Roorkee - 247667 (Uttaranchal), India.