Line 1
Overview
Seoul Metropolitan Subway Line 1 is the first urban railway line in South Korea, opened on August 15, 1974. It is a metropolitan subway line that operates through direct connections between Seoul Subway Line 1 and the Gyeongbu Line, Gyeongin Line, and Gyeongwon Line sections of Korea Railroad Corporation (Korail). As of 2024, it runs from Soyosan to Sinchang with a total of 98 stations, serving as a key transportation axis connecting the east-west and north-south of the capital area.
Main Content
History
- August 15, 1974: Opening of Seoul Station~Cheongnyangni section (South Korea's first subway)
- 1980s: Start of direct operation on Gyeongin Line (toward Incheon) and Gyeongbu Line (toward Suwon)
- 2000s: Extension of Gyeongwon Line (Uijeongbu·Soyosan), opening of Byeongjeom·Seodongtan branch line
- 2020s: Long-distance operation toward Cheonan·Sinchang, expansion of express train system
Route Composition
Line 1 is broadly divided into four sections:
- Gyeongwon Line Section: Soyosan~Cheongnyangni (above-ground section, under Korail jurisdiction)
- Seoul Subway Section: Cheongnyangni~Seoul Station (underground section, under Seoul Metro jurisdiction)
- Gyeongin Line Section: Seoul Station~Incheon (mixed above-ground and underground, under Korail jurisdiction)
- Gyeongbu Line Section: Seoul Station~Sinchang (above-ground section, under Korail jurisdiction)
Operation System
- Local Train: Stops at all stations (Soyosan~Sinchang, with some sections operating shortened routes)
- Express Train: Stops only at major stations (Yongsan~Dongincheon Express, Cheongnyangni~Sinchang Express, etc.)
- Super Express: Introduced in 2024, operates at maximum speed on the Seoul Station~Cheonan section
Major Stations
- Seoul Station: Central transfer station of Line 1 (KTX, Line 4, Gyeongui Jungang Line, Airport Railroad)
- Jongno 3-ga: Transfer with Lines 3 and 5, Jongno city center
- Incheon: Terminus of Gyeongin Line, transfer with Incheon Metro
- Suwon: Major hub on Gyeongbu Line, transfer with Bundang Line
- Uijeongbu: Center of Gyeongwon Line, transfer with Uijeongbu Light Rail
Characteristics
- Congestion: Congestion rate exceeds 150% across all sections during rush hours (up to 200% on Seoul Station~Jongno 3-ga section)
- Aging: Persistent issues with aging facilities in underground sections built in the 1970s
- Long-distance Operation: Soyosan~Sinchang (approximately 200 km) is a world-class long-distance urban railway
Latest Trends
As of 2024–2025, Line 1 is undergoing the following changes:
- Express Train Expansion: New Seoul Station~Cheonan Super Express service from December 2024, reducing average travel time by 30 minutes
- Facility Improvement: Full replacement of platform screen doors in Seoul Metro section stations, improved cooling performance
- Digital Transformation: Enhancement of real-time congestion app, introduction of AI-based train dispatch system
- Safety Issues: Full inspection of emergency braking systems after the 2023 Guro Station collision accident
- Korail Strike: Service disruptions on some sections due to difficulties in wage negotiations in 2024
- Transfer Improvement: Expansion of transfer passage at Sindorim Station (scheduled for completion in 2025)
Social and Cultural Significance
Line 1 is more than just a means of transportation; it is a symbol of South Korea's industrialization and urbanization. Built amid the oil crisis of the 1970s, it led the 'Miracle on the Han River' and remains the lifeline for ordinary citizens in the capital area, a space where diverse social classes coexist. It frequently appears as a backdrop in films and dramas (e.g., 'Tazza', 'Reply 1988'), and the 'Line 1 Express' has become an everyday icon for Koreans.
Related Topics
- [[Seoul Metropolitan Subway]]
- [[Seoul Subway]]
- [[Korea Railroad Corporation]]
- [[Gyeongbu Line]]
- [[Seoul Station]]
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