SuinBundang

The Suin–Bundang Line is a commuter rail line of the Seoul Metropolitan Subway. It connects Suwon Station in Suwon, Gyeonggi Province, and Wangsimni Station in Seoul. The line was formed through the merger of the former Suin Line and Bundang Line. The Suin Line was originally built by the Japanese in the 1930s and was primarily a freight line, later serving passengers. The Bundang Line, on the other hand, was a modern subway line built in the 1990s to alleviate traffic congestion in the affluent Bundang district of Seongnam.

The merger of the two lines was completed in 2012, with the Bundang Line extending south to Suwon, incorporating the existing Suin Line tracks. This integration created a significantly longer and more comprehensive commuter line, facilitating travel between a wider range of suburban areas and the city center. The Suin–Bundang Line is operated by Korail. It serves numerous stations, connecting major residential areas, commercial centers, and transportation hubs. The line is characterized by its mix of older infrastructure from the Suin Line and modern rolling stock and station facilities from the Bundang Line. It plays a vital role in the daily commute for hundreds of thousands of people in the Seoul metropolitan area.