The article discusses a strategy for developing railway technology based on the railway network. The Korean high-speed train system has improved logistics and transformed the railway network, leading to advancements in the industry. The railway industry is investing in various types of railway systems to integrate with the National Transportation Network Plan. To meet the capacity needs of the National Railroad Plan, the industry must establish long-term train purchase and operation strategies. Train operators should collaborate with project operators from planning to operation stages and develop long-term procurement plans aligned with national and line-specific railway plans. Research and development of trains should align with the long-term railway plan.