The Red line is a metro line of Kaohsiung Metro which runs north–south through the city of Kaohsiung, Taiwan. At 31 kilometres (19 mi), it is the fourth-longest metro line in Taiwan, after Taoyuan Airport MRT, Tamsui-Xinyi Line and Zhonghe-Xinlu Line.

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Red line
Red line platform at Formosa Boulevard
Overview
Locale	Kaohsiung, Taiwan
Termini	Gangshan South Siaogang
Stations	24
Service
Type	Rapid transit
Operator(s)	Kaohsiung Rapid Transit Corporation
Depot(s)	North South
History
Opened	9 March 2008 (2008-03-09)
Technical
Line length	31.1 km (19.3 mi)
Number of tracks	2
Character	Underground/At-Grade/Elevated
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Electrification	750 V DC third rail
Route map Legend Dahu Lujhu Lujhu South Kao Yuan University Kaohsiung Science District Benjhou Industrial Park National Gangshan Agricultural & Industrial Vocational Senior High School Gangshan Gangshan South ( Western Trunk line) Ciaotou ( Western Trunk line) Ciaotou Sugar Refinery Cingpu Metropolitan Park Houjing Nanzih Export Processing Zone Oil Refinery Elementary School World Games ( Western Trunk line ) ( ) Zuoying Ecological District Kaohsiung Arena Aozihdi Houyi Kaohsiung Main Station ( Western Trunk line, Pingtung line ) Kaohsiung Main Station (former site) Formosa Boulevard (  ) Central Park Sanduo Shopping District Shihjia Kaisyuan (  ) Cianjhen Senior High School Caoya Kaohsiung International Airport KHH Siaogang China Steel East Portal Labor Training Center Fongbitou Gangpu Elementary School Linyuan Linyuan Industrial Park Wufang Wulong Donggang Dapengwan National Scenic District Management Hall Dapengwan This diagram: view talk edit

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There is a plan to extend the line north to Hunei District^{[citation needed]}. This would add 8 stations to the line.

In the “1988 Kaohsiung Metropolitan Metro System Feasibility Study”, the Red line was amongst the four lines planned. In January 1991, it was one of the two lines categorised to open as Phase 1 in period 1. Further progress was halted in March 1995 due to skepticism for the need of it within the city council, citing traffic congestion within the city to be not critical. In June 1998, the Executive board revived the plans under the BOT initiative. Together with the approval from relevant city councils, the metro department began conducting feasibility studies of the Red Line in February 1999. Three months later, priority was given to China Steel Corporation and Siemens on construction contracts. The contracts were finalised in January 2000.

On 24 October 2001, ground works were initiated at the Siaogang station site. The first phase from Siaogang station to Sanduo Shopping District station had its machinery and tunneling works completed in November 2006. Test riders were invited for operational trial for this milestone. By February 2008, most of the construction had been completed. At this stage, a soft opening was launched with free rides in the first phase. The entire line from Siaogang to Ciaotou stations opened on 9 March 2008, and was free to commuters until 7 April the same year.^{[note 1]}

It opened for service on 9 March 2008 and was free for one month until 6 April.^[1]