The
Shinbundang Line (aka
Sinbundang Line;
Korean: 신분당선 (literally,
New Bundang Line)) or
DX Line is a 31 km long line of the
Seoul Metropolitan Subway. It is the world's fifth subway to run completely driverless and the second completely driverless metro line to open in South Korea, after
Busan Subway Line 4. It connects
Gangnam Station and
Gwanggyo Station in 37 minutes, a feat achieved by being the first line to operate South Korea's next-generation subway car travelling at over 90 km/h, with the fastest average speed of any subway in the country.