| Line 4, Shanghai Metro | |||
|---|---|---|---|
| 4 | |||
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A view of the Yishan Road station.
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| Overview | |||
| Type | Rapid transit | ||
| Locale | Shanghai, China | ||
| Termini | continuous loop from/to Yishan Road, which serves as terminal for trains returning to depot | ||
| Stations | 26 | ||
| Daily ridership | 950,000 (2017 Peak) | ||
| Operation | |||
| Opened | December 31, 2005 | ||
| Operator(s) | Shanghai No.3 Metro Operation Co. Ltd. | ||
| Character | Underground and elevated | ||
| Technical | |||
| Line length | 33.7 km (20.94 mi) | ||
| Number of tracks | 2 | ||
| Track gauge | 1,435 mm (4 ft 8 1⁄2 in) | ||
| Electrification | Overhead lines (1500 volts DC) | ||
| Operating speed | 80 km/h (50 mph) | ||
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Line 4 is a loop line of the Shanghai Metro network. Its rolling stock carry a bright violet colour belt to differentiate them from Line 3 trains which share a portion of its track. To determine the direction of travel, the line that travels counter-clockwise is called the Outer Loop (外环), while the other line is known as the Inner Loop (内环). Although it is a loop line, trains returning to the depot use Yishan Road as a terminal to let all passengers disembark. The first segment of the line between Damuqiao Road and Lancun Road (running in a "C"-shape) opened on December 31, 2005. The remainder of the line opened on December 29, 2007. The line is colored purple on system maps.