국철, or the "National Railway," refers to the railway system operated by the government in South Korea. It plays a crucial role in connecting major cities and regions, facilitating transportation for both passengers and freight. The system includes various lines, such as the KTX (Korea Train Express), which offers high-speed travel across the country. The Korea Railroad Corporation (KORAIL) is responsible for managing and operating the national railway services. Established in 1963, KORAIL has expanded the network significantly, improving accessibility and efficiency. The national railway system is vital for economic development and promotes tourism by linking popular destinations.