1. Professor of Civil Engineering, Dept. of Civil Engineering, P.D.A. College of Engineering, Gulbarga 585102, India. E-mail: ssawanti@yahoo.co.in
2. Professor of Civil Engineering, Dept. of Civil Engineering, Bangalore Univ., Bangalore 560056, India. E-mail: amarnath_ms@rediffmail.com
3. Professor and Head, Transportation Engineering Division, Dept. of Civil Engineering, Indian Institute of Technology, Madras Chennai 600036, India. E-mail: av@iitm.ac.in