Line 4 (Xiamen Metro)
Under construction metro line in Xiamen, China
From Wikipedia, the free encyclopedia
Line 4 of Xiamen Metro is an under construction metro line in Xiamen, Fujian, China. The Xiang'an Airport section is scheduled to operate in June 2026.[2] As the fastest fully automated metro train currently operating in Xiamen, travel time from Xiamen North railway station to Xiang'an Airport will be reduced to 30 minutes.[2][6]
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| Line 4 | |
|---|---|
Exterior of Guanxun station | |
| Overview | |
| Other name | Outer Bay Ring Express Line[1] |
| Status | Trial operation |
| Owner | Xiamen Metro |
| Locale | Xiamen, Fujian, China |
| Termini |
|
| Stations | 12 (Xiang'an Airport section phase 1) [2] 21 (total) |
| Service | |
| Type | Rapid transit |
| System | Xiamen Metro |
| Operator |  Xiamen Metro |
| Depot | Houxi depot[3] |
| History | |
| Opened | 16 September 2026 (Trial operation) |
| Technical | |
| Line length | 44.78 km (27.83 mi) (Xiang'an Airport section phase 1) [2][4] 71.23 km (44.26 mi) (total)[5] |
| Number of tracks | 2 |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) |
| Electrification | 1.5 kV DC Overhead catenary contact |
| Operating speed | 120 km/h (75 mph) (Maximum design speed)[2] |
This is the first subway line of Xiamen Metro system to adopt GoA4 automation level.[7]
Among the distance of 44.78 km (27.83 mi) on the Phase 1; 22.48 km (13.97 mi) is an underground section, 20.95 km (13.02 mi) and 1.35 km (0.84 mi) is a transition section.[8]
History
The key engineering projects for Line 4 were announced in December 2015.[1]
Construction began in December 2015 with an estimated total construction period of 57 months.[9]
On the morning of 11 April 2020, the 1.36 km (0.85 mi) bridge elevated section from Caicuo to Dadeng North was completed.[4]
On 16 April 2024, the main structure of Airport West Station of Line 3 and Line 4 were successfully topped out.[10]
In August 2024, the rolling stock set of Line 4 officially debuted.[6]
On 26 November 2024, Line 4 rolling stock began testing without passengers.[11]
On 10 October 2025, Line 4 began trial operation.[12]
From 9:30 am on 16 September 2026, Line 4 will open trial ride activity for the public along with Line 6[13].
Stations
Service route: Runs from Jimei Software Park North to Qianwu, without stops at Xiyan. Operating hours daily from 8:00 to 20:00, with trains run on schedule within 14 minutes and 45 seconds minute intervals, throughout the day[14].
| Section | Station name | Transfer | Distance
km |
Location | ||
|---|---|---|---|---|---|---|
| English | Chinese | |||||
| ? | Songyu Wharf | 嵩屿码头 | Haicang | |||
| Nanhai Road | 南海路 | |||||
| Linggang Xincheng | 临港新城 | |||||
| Phase 2 | Maluan Bay South | 马銮湾南 | ||||
| Maluan Center | 马銮中心 | 2 | ||||
| Maluan Bay North | 马銮湾北 | |||||
| Guankou | 灌口 | Jimei | ||||
| Software Park Phase 3 East | 软三东 | |||||
| Phase 1 (Xiang'an Airport section)[15] | Jimei Software Park North | 集美软件园北 | ||||
| Houxi | 后溪 | |||||
| Xiamen North Railway Station | 厦门北站 | 1  XKS Xiamen BRT |
||||
| Guanxun | 官浔 | Xiamen BRT | Tong'an | |||
| Bingzhou | 丙洲 | |||||
| Chengchang | 城场 | Xiang'an | ||||
| Xiyan | 西岩 | |||||
| Hongkeng | 洪坑 | 3 | ||||
| Qianwu | 前浯 | |||||
| Dongting | 洞庭 | |||||
| Airport West | 机场西 | 3  XMN |
||||
| Xiang'an Airport | 翔安机场 | XMN |
||||
| Phase 1 long term planning | Airport East | 机场东 | XMN |
|||
Rolling stock
In the first phase, 18 four-car train set produced by CRRC Changchun adopting GoA4 automation level will be implemented to meet the demands.[1][16][3]