Ui LRT

The Ui LRT, referred to as the Ui-Sinseol LRT or Ui-Sinseol Line (우이신설선) in Korean, is a light metro which is part of Seoul Metropolitan Subway. It is a fully underground 11.4 km Light Rapid Transit line from Ui-dong to Sinseol-dong in northern Seoul which opened on September 2, 2017. The line, which is expected to carry 110,000 passengers a day, has 13 stations. It connects to Line 4 at Sungshin Women's University, Line 6 at Bomun and Lines 1 & 2 at Sinseol-dong. The last (northernmost) station is in Ui-dong, hence the name of the line. In 2019, the line carried 27 million passengers or about 75,000 people per day.

Rolling Stock
The line uses a dedicated fleet of 18 trains built by Rotem, a member of Hyundai Motor Group. The trains are very similar, possibly identical, to the ones previously built for the Busan–Gimhae Light Rail Transit. Each train consists of single 2-section unit with a Jacobs bogie in the center, similar to many street running high floor light rail vehicles such as the light rail rolling stock of Los Angeles, although it is powered by a bottom contact third rail as opposed to overhead wires most street railways use, making them more similar to the first three generations of Docklands Light Railway rolling stock in London. However, they only run as singles instead of the 2- and 3-car trains used on the DLR.

Stations
All stations are located in Seoul.

Future Plans
The Seoul Metropolitan Government plans to open an extension for the Ui Sinseol Line. It will connect Solbat Park Station to Banghak Station and consist of three new stations.