Line S9 is a north–south suburban metro line in the Nanjing Metro system, which opened on December 30, 2017. It connects to Line S1 at Xiangyulunan and crosses Shijiu Lake on a 12 km (7.5 mi) long bridge between Mingjue and Tuanjiewei.
Rolling Stock
Line S9 uses car Class B aluminum alloy trains with a maximum service speed of . The train cars are wide with a transverse 2+2 seating layout, with 151 seats and a capacity of 441 people. Unlike most Class B metro trains, each car only has 3 doors per side instead of 4, owing to the line's length and speed. ==References==