Suzhou currently has three metro lines totalling 105km in operation, together with a 25.7km light rail line serving Suzhou New District. The first phase of the 45km 37-station Line 3 is due to open in December 2019, with Line 5 following in June 2021.

Phase 3 comprises lines 6, 7, 8 and S1, with construction due to begin on all four during 2019.

The 41km Line S1 will be Suzhou’s first suburban metro line. The line will run east from Yiting Road station in Suzhou Industrial Park to Kunshan City and Kunshan Huaqiao, which has been served by Shanghai metro Line 11 since October 2013.