1. Assistant Professor, Civil Engineering Group, Birla Institute of Technology & Science, Pilani–333031, Rajasthan, India; formerly, Ph.D. Scholar, Dept. of Civil Engineering, Transportation Engineering Div., IIT Madras, Chennai, 600 036 Tamilnadu, India (corresponding author).
2. Professor, Dept. of Civil Engineering, Transportation Engineering Div., IIT Madras, Chennai, 600 036 Tamilnadu, India.