Sadang Station is a station on the Seoul Subway Line 2

Seoul Subway Line 2

Seoul Subway Line 2 is a circular line of the Seoul Metropolitan Subway. The line running clockwise is called the "inner circle line" and the counter-clockwise line is called the "outer circle line." This is Seoul's most heavily used line, and the longest circular subway line in the world...

 and Seoul Subway Line 4

Seoul Subway Line 4

Seoul Subway Line 4 of the Seoul Metropolitan Subway is a long line crossing from the southwest to the northeast across the Seoul National Capital Area. The southern portion of the line is divided into the Gwacheon and Ansan Lines, but this does not affect the trains which run on it, most of...

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Sadang Station has one island platform

Island platform

An island platform is a station layout arrangement where a single platform is positioned between two tracks within a railway station, tram stop or transitway interchange...

 for Line 4 and one side platform

Side platform

A Side platform is a platform positioned to the side of a pair of tracks at a railway station, a tram stop or a transitway. A pair of side platforms are often provided on a dual track line with a single side platform being sufficient for a single track line...

 for Line 2. The Line 2 platform of this station is the first in Korea to have platform screen doors

Platform screen doors

Platform screen doors and platform edge doors at train or subway stations screen the platform from the train. They are a relatively new addition to many metro systems around the world, with some platform doors retrofitted rather than installed with the metro system itself. They are widely used in...

 installed, on October 21, 2005. This station is the southern terminus for Line 4 trains that belong to the Seoul Metro

Seoul Metro

Seoul Metro is a public corporation which runs the Seoul Subway Lines 1 to 4.From 1970 to 2006, it was called Seoul Metropolitan Subway Corporation.-Lines:- See also :* Korail* Seoul Metropolitan Rapid Transit Corporation...

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Both Line 2 and 4 stations are located in Sadang-dong, Dongjak-gu, Seoul.