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Metro (subway)

As of December 2022, Jiangsu has six cities that have operational subway systems, together with an extra city (Huai'an) currently under construction. These six cities are Nanjing, Suzhou, Wuxi, Changzhou, Xuzhou and Nantong.

The Nanjing Metro was opened in September 2005. It was the sixth city in mainland China that opened up a metro system. As of December 2019 the city currently has 11 metro lines (Line 1, Line 2, Line 3, Line 4, Line 10, Line S1, Line S3, Line S6, Line S7, Line S8 and Line S9), with several extra ones (i.e. Line 5) under construction.

The Suzhou Rail Transit, also known as the Suzhou Metro, was opened in April 2012. As of October, 2022, it currently has five operational lines: Line 1, Line 2, Line 3, Line 4 and Line 5. It also has four other lines under construction (Line 6, Line 7, Line 8, Line S1) and 11 lines under planning (Lines 9, 10, 11 through 16, Line 18, Line 20, Line S4, Line S5). Currently under construction lines are expected to be operational by 2024 and planned lines are expected to be operational by 2035.

The Wuxi Metro was opened in July 2014. The system is currently composed of four operational lines by 2022: Line 1, Line 2, Line 3 and Line 4. It also has two other lines under construction: Line S1 and an extension of Line 4.

The Changzhou Metro was opened in September 2019. The system currently only has two lines operational, Line 1 and Line 2.

The Xuzhou Metro was opened in September 2019, a few days after the Changzhou Metro started operations. The system currently only has three lines operational, Line 1, Line 2 and Line 3.

The Nantong Metro was opened in November 2022. It has one operating line: Line 1 and another line under construction: Line 2.

The Huai'an Metro, also known as the Huai'an Rail System, began construction in November 2018. There are seven lines planned: Line 1, Line 2, Line 3, Line 4, Line 5, Line S1, and Line S2. It is expected to start operations before 2025.