Line Z4 (Tianjin Metro)
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StatusPartly operational
Stations10 (in operation)
24 (total)[1]
24 (total)[1]
| Line Z4 | |
|---|---|
| Overview | |
| Status | Partly operational |
| Locale | Tianjin, China |
| Termini | |
| Stations | 10 (in operation) 24 (total)[1] |
| Service | |
| Type | Rapid transit |
| System | Tianjin Metro |
| Rolling stock | CRRC Dalian 6 cars type A[2] |
| History | |
| Opened | 18 January 2026 |
| Technical | |
| Line length | 23.738 km (14.750 mi) (In operation)[3] 43.7 km (27.2 mi) (Total)[1] |
| Number of tracks | 2 |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) |
| Electrification | 1,500 V DC Overhead catenary |
| Operating speed | 120 km/h (75 mph) (Maximum design speed) |
Line Z4 of Tianjin Metro is a metro line in Tianjin, China. Line Z4 is the largest metro PPP project in China with 55.3 billion RMB was won by Tianjin TEDA Investment Holdings Co., Ltd and China Railway Electrification Bureau Group Co., Ltd.[4]
On 16 January 2026, Line Z4 opened trial ride activity for the public[5].
The northern section officially put into operation on 18 January 2026[1].