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Ilsan Line
Korail 3000 series second-generation train at Daegok Station
Overview
Native name	일산선(一山線)
Status	Operational
Owner	Korea Rail Network Authority
Locale	Gyeonggi Province
Termini	Daehwa Jichuk
Stations	10
Service
Type	Rapid transit
Operator(s)	Korail
Depot(s)	Jichuk
History
Opened	January 30, 1996 (1996-01-30)
Technical
Line length	19.2 km (11.9 mi)[1]
Number of tracks	Double track
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Electrification	1,500 V DC Overhead lines

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.^[2]

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.^[3] 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.^[4]

Station Number	Station Name English	Station Name Hangul	Station Name Hanja	Transfer	Location
↑ Through-service to/from Ogeum via Seoul Metropolitan Subway Line 3 ↑
319	Jichuk	지축	紙杻		Deogyang-gu	Goyang, Gyeonggi
318	Samsong	삼송	三松
317	Wonheung	원흥	元與
316	Wondang	원당	元堂
315	Hwajeong	화정	花井
314	Daegok	대곡	大谷
313	Baekseok	백석	白石		Ilsandong-gu
312	Madu	마두	馬頭
311	Jeongbalsan	정발산	鼎鉢山
310	Juyeop	주엽	注葉		Ilsanseo-gu
309	Daehwa	대화	大化

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.

• Subways in South Korea
• Seoul Subway Line 3