The Busan Subway, operated by the Busan Transportation Corporation, is the subway system of Busan, South Korea. The subway network first opened in 1985 with seventeen stations. Since the opening of its last expansion in November 2005, it consists of 3 lines, 89 stations, and 89.9 kilometres (55.9 mi) of tracks. Line 4 (also referred to as ‘Bansong Line’) is under construction and is scheduled to open in December 2010; the Busan-Gimhae Light Rail Transit is scheduled to open in April 2011; the extension of Line 1 (farther into Saha-gu) is expected to be finished in late 2013; the opening of Jeungsan Station of Line 2 is expected to be in 2014; finally, a short line that connects Sasang Station of Line 2 and Hadan Station of Line 1 is to be finished in 2016. Once these constructions are completed, the entire system will include 132 stations (stations connected by transferring recognized as one).
All directional signs on the Busan Subway are written in both Korean and English, and the voice announcement in the trains indicating the upcoming station, possible line transfer and exiting side are all spoken in Korean, followed by English. Announcements at stations for arriving trains are in Korean, followed by English, then Japanese and Mandarin.