Daegu Metro Line 1 was, until mid-2005, the only rapid transit line in the South Korean city of Daegu. It is operated by the Daegu Transit Corporation. The line color is ●scarlet.

Line 1
Overview
Native name	1호선(1號線) Il Hoseon
Status	Operational
Termini	Seolhwa-Myeonggok Ansim
Stations	32
Service
Type	Rapid transit
System	Daegu Metro
Services	1
Operator(s)	Daegu Transit Corporation
Depot(s)	Ansim Depot
Rolling stock	Hanjin 1000-series
History
Opened	November 26, 1997
Technical
Line length	28.4 km (17.6 mi)
Number of tracks	2
Track gauge	1,435 mm (4 ft 8+1⁄2 in)
Electrification	1500 V DC overhead
Operating speed	80 km/h (50 mph), max 34 km/h

The line first began running from Jincheon to Jungangno on November 26, 1997. The section from Jungnangno to Ansim was opened shortly thereafter, on May 2, 1998. The west end of the line was extended from Jincheon to Daegok, reaching its current length on May 10, 2002. However, service on the entire line was stopped for several months in 2003 following the Daegu subway fire.

Line 1's 28.4-kilometre (17.6 mi) course lies entirely within the metropolitan city of Daegu, although proposals have been made to extend it into the northern end of Gyeongsan city. As of 2011^[update], trains run 312 times per day during the week, and 288 times on weekends and holidays. It takes 50 minutes and 30 seconds to go from one end to the other.^[1] A southwestern extension was opened on September 8, 2016.^[2]