Line S9 is a north–south suburban line in the Nanjing Metro () system, which opened on December 30, 2017. It connects to Line S1 at and crosses Shijiu Lake on a 12 km long bridge between and . Line S9 also serves as the second stage of the Nanjing–Gaochun Intercity Railway, with Line S1 serving as the first stage. In June 2019 a few express trains started operating during rush hour, running non-stop between and . Opening timetable Station list Rolling Stock Line S9 uses car B-type aluminum alloy trains with a maximum service speed of 120 km/h. The train cars are 2.8 meters wide with a transverse 2+2 seating layout, with 151 seats and a capacity of 441 people. References External links Line S9 on the official Nanjing Metro website (includes route map) Nanjing Metro lines Railway lines opened in 2017