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 (7.1 mi) 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.
Ui LRT
Medium-capacity rail system
A medium-capacity system (MCS), also known as light rapid transit or light metro, is a rail transport system with a capacity greater than light rail, but less than typical heavy-rail rapid transit. MCS's trains are usually 1–4 cars. Most medium-capacity rail systems are automated or use light rail type vehicles.
Glasgow Subway
Rapid KL – Kelana Jaya Line
Taipei MRT Wenhu Line (Brown Line)
Toronto subway's former Line 3 Scarborough was fully integrated with the rest of the heavy rail network, despite using light metro technology.