2022 Volume 78 Issue 3 Pages 105-121
In this paper, we propose a methodology to quantify the economic loss of users caused by the failure of a highway facility and to find the optimal repair policy considering both the economic loss of users and the management cost. In facilities such as ETC systems, it is difficult to prevent all failures, and it is necessary to take into account not only the management cost, but also the economic loss of users due to the failure. We propose a methodology that quantifies i) the economic loss of users due to traffic congestion caused by the failure and ii) the failure process of facilities, using traffic volume data and failure data of the facilities, and finds the optimal repair policy by an optimal control problem. In the empirical study, the proposed methodology is applied to a management problem of a real ETC system to discuss the effectiveness of the methodology and to analyze the relationship between the characteristics of the IC where the ETC system is installed and the optimal repair policy.
