Since its designation as a special municipality, New Taipei City has been dedicated to promoting the three-ring, six-line rail construction project. The project is expected to be completed by 2030 and comprises a total length of 235 km. The first ring connects the New Taipei Circular line, the north section of the Circular line, and the south section of the Circular line. The second ring connects the Wanda–Zhonghe line, the Xinzhuang line, and the New Taipei Shulin line. The third ring connects the Banqiao line, the Tucheng line, the Sanyin line, the Taoyuan Green line, the Airport line, and Dingpu. The six lines are the Danhai light rail, Ankeng light rail, Xizhi–Donghu line, Wugu–Taishan light rail, Bali light rail, and Shenkeng light rail.