2023 Volume 79 Issue 23 Article ID: 23-23180
In this study, we used multi-agent simulation (MAS) to quantify disadvantages of local residents due to bridge consolidation. In Japan, the consolidation and abolition of bridges is unavoidable due to tight local finances. Although, there is a delay in building a consensus with the residents regarding the demolition and the consolidation plan. We constructed the model that can estimate disadvantages of local residents when the nearby bridge removed using MAS. One of the features of this model is that residents (agents) have access to predefined functions that express the burden of moving. They would optimize these functions by selecting the type of transportation and the routes taken. Simulations were con-ducted with and without the target bridge, and the difference in the total value of each agent’s utility functions would indicate the importance of the bridges. The simulations were performed for three different observation times: morning on weekdays, daytime on weekdays, and daytime during holidays. The target bridges are 19 bridges that cross the Itachi River in Toyama City. The results of this study revealed that Tatsuizumi Bridge and Chitose Bridge had the highest importance, whereas Sousen Bridge and Higashi Bridge had the lowest importance. The results, which indicate the priority of the bridges from the residents’ point of view, is beneficial in terms of the planning of bridge maintenance, particularly in deciding which bridges to prioritize in the future.
