About KOSHI M
About Univ. Tokyo
About KUWAHARA M
About Univ. Tokyo
About AKAHANE H
About Chiba Inst. Technology, JPN
About ITE Journal (Institute of Transportation Engineers)
About expressway
About traffic jam
About 交通調査,交通管制・規制【’81~’92】
About Road planing and surveying,road structures
About 日本
About 高速道路
About トンネル