High Quality Content by WIKIPEDIA articles! The Taipei Metro Neihu Line is a medium-capacity rapid transit system and runs on an elevated corridor except near Songshan Airport and Dazhi. The line`s service length is 14.8 kilometres (9.2 mi) and it is joined to the Wenshan Line at Zhongshan Junior High School Station, providing direct service through Neihu, Nangang, and Wenshan.