Ilsan Line

Ilsan Line is a subway line operated by Korail, in Seoul, South Korea. Trains from this line continue to and from Seoul Metro's Line 3.

History
The line started construction on March 15, 1991 as an extension of Seoul Metro Line 3 with the line opening in 1996. After the completion of the Ilsan Line, the Korean National Railroad suddenly announced that it would transfer ownership of the line to Seoul Metropolitan Government. According to the Korea National Railway, the Seoul Metropolitan Government asked the Seoul Metropolitan Subway to take over the operation of the Ilsan Line, which is connected to the Seoul Subway Line 3, noting that redundant management facilities and workforce would be needed if Korean National Railroad operates the Ilsan Line. The Seoul Metropolitan Government dismissed the request because the Ilsan Line was located in Gyeonggi Province, and was concerned the increased expenditure should Seoul Metropolitan Subway operate the line. Ultimately, the Ilsan Line remained under the jurisdiction of the Korean National Railroad which became what is today Korail. On December 27, 2014 Wonheung station started operation.

Rolling stock
For the opening of the Ilsan Line, Korea National Railway procured a fleet of 18 first-generation Korail 3000 series trainsets from Hyundai Precision & Industries, delivered from 1995–1997. A fleet of eight second-generation Korail 3000 series trainsets are currently being manufactured by Hyundai Rotem, and another eight third-generation Korail 3000 series trainsets will be manufactured by Woojin Industrial Systems, both to eventually replace the first-generation trains. All Ilsan Line trains operated by Korail are stored and maintained at Jichuk Depot located near Jichuk Station.