Line 3 of the Tianjin Metro a rapid transit line running from north-east to south-west Tianjin. It was opened on 1 October 2012. The line is 33.7 km long and has 26 stations of which 8 are elevated and the rest are underground.

Line 5 of the Tianjin Metro is a rapid transit line running semi-circular from north-west to south-west Tianjin. It is run by Tianjin Binhai Mass Transit Development Co., Ltd, which becomes a subsidiary of Tianjin Rail Transit Group Corporation since 2017.