Editing Seoul Subway Line 5 (section)

== History ==
The line was built 1990–1996 and is an important east–west link connecting [[Gimpo International Airport|Gimpo Airport]], the [[Yeouido]] business area, downtown Seoul, and the [[Gangdong-gu|Gangdong]] residential districts.

In 1996 Line 5 was implemented with [[Automatic train operation]]. However, it was deemed that a driver would be necessary in case of a breakdown of the automation system, therefore each subway train has one driver on board.

It was the [[List of longest subway tunnel sections|world's longest underground railway line]] for 9 years until [[Line 3, Guangzhou Metro|Guangzhou Metro Line 3]] came into operation in 2005.

In December 2010 the line is recorded as having the third highest WiFi data consumption in the Seoul Metropolitan area. It averaged 1.67 times more than the other 14 subway lines fitted with WiFi service zones.<ref>{{cite news|title=Seoul Subway Line No. 2 Becomes Major WiFi Hotspot|url=http://english.chosun.com/site/data/html_dir/2010/12/24/2010122401037.html|access-date=25 April 2012|newspaper=[[The Chosun Ilbo]]|date=24 December 2010}}</ref>

The main branch of the line was extended to the city of [[Hanam]] with a total of 5 stations spanning 6.5&nbsp;km. The extension opened in two stages; the first opened on August 8, 2020, and the other opened on March 27, 2021.<ref>{{cite magazine |last=Burroughs |first=David |date=10 August 2020 |title=First phase of Seoul's Hanam Line 5 extension opens |url=https://www.railjournal.com/passenger/metros/first-phase-of-seouls-hanam-line-5-extension-opens |url-access=registration |magazine=[[International Railway Journal]] |publisher=Simmons-Boardman Publishing Inc. |access-date=19 August 2020}}</ref><ref>{{cite news |author=<!--Staff writer(s)/no by-line.--> |date=25 March 2021 |script-title=ko:지하철 5호선 강일역 모레부터 운영…하남선 완전 개통 |trans-title=Subway Line 5 Gangil Station will operate from the day after tomorrow... Complete opening of Hanam Line |url=https://www.hankyung.com/life/article/202103250454Y |work=[[The Korea Economic Daily|Hankyung]] |language=Korean |agency=[[Yonhap News Agency]] |access-date=3 April 2021}}</ref>