1. Assoc. Prof., Transp. Engrg. Div., Dept. of Civ. Engrg., Indian Inst. of Technol., Madras, India.
2. Prof., Institut fur Stadtbauwesen, Technische Universitat Braunschweigh, Germany.
3. Formerly Postgraduate Student, Transp. Engrg. Div., Dept. of Civ. Engrg., Indian Inst. of Technol., Madras, India.