The study was recently published in Transportation Research Part A: Policy and Practice, a world-renowned journal in the field of transportation and logistics. When major disasters such as earthquakes or floods strike, roads and railways are damaged, cutting off human mobility and disrupting the transport of goods, which triggers severe secondary economic losses. In analyzing the disaster recovery process, the research team focused on how rapidly "Market Access"—the size of the population and market accessible relative to travel time—is restored beyond simple physical facility repairs as the main key to economic reconstruction. Using big data spanning from 2006 to 2020 across more than 1,700 municipalities in Japan, the research team conducted a comparative analysis of how the restoration of high-speed rail (Shinkansen) and expressway networks affected regional gross domestic product (GDP), population movement, and new business creation. It will serve as an important guideline for enhancing economic resilience in future disaster response policies and national infrastructure planning."