Systematization of Various Disaster Countermeasures and Classification of Risks on Expressways

A Case Study on West Nippon Expressway Co.,Ltd.

Abstract

It is an important social mission for West Nippon Expressway Co., Ltd. which is a designated public institution (following NEXCO West) to continue the wide expressway netwrork operations against various risks. NEXCO West currently works on business continuity plan development to cope with the various risks. This paper reports on the systematization of disaster countermeasures, which makes clear the correlation between risks and road functional disorders with consideration of the frequency and duration of regulations in traffic on expressways at Kansai region in Japan. In addition, the general prioritizing method of disaster countermeasures with consideration of cost and effectiveness of disaster countermeasures is proposed.