1. Professor Emeritus of Transport Engineering, School of Civil and Environmental Engineering, Univ. of New South Wales, Sydney, NSW 2052, Australia.
2. Assistant Prof., School of Geography and Geology, McMaster Univ., Canada; formerly, Tohoku Univ., Kawauchi, Aoba-ku, Sendai 980-8576, Japan.
3. Doctoral Candidate, School of Civil and Environmental Engineering, Univ. of New South Wales, Sydney, NSW 2052, Australia.