Wenzhou rail transit

Wenzhou Rail Transit, operated by Wenzhou Mass Transit Rail Corporation (abbreviated as WZ-MTR), is the rapid transit network serving the city of Wenzhou, Zhejiang Province, China. Three lines (S1, S2 and S3) have received approval from the NDRC, and two more lines (M1 and M2) are not approved (de facto rejected) by NDRC. Line S1 has been under construction since November 2011 and was opened in January 2019. Line S2 opened in August 2023. Line S3 is under construction and will open in 2027. The first three lines are projected to cost about 50 billion yuan.

Nomenclature
In the PRC in general both the terms 市郊铁路 (Urban-Suburban railway) and 市域铁路 (Perfectural railway) refers to newly-opened commuter/regional railway services in general interchangeably, and are designated with Latin letter S. In Southern Zhejiang province, however, 市郊铁路 refers to genuine commuter/regional lines like that of Transilien, while 市域铁路, dubbed with S, refers to the partially underground urban system like that of the RER. Taizhou, in particular, has both systems in its rail transit in operation; while Wenzhou has both a RER-like system in operation and a planned rapid transit. The RER-like system has everything similar to a rapid transit in terms of operation, and has no direct connections with the national railway system, yet still has a loading gauge and signaling system inherited from the interprovincial railway and runs on the left track, and comes with a longer distance between stations (approximately 3km). Due to the state restrictions on rapid-transit building in smaller cities some city governments use this methods to circumvent such restrictions, branded as a rapid transit toward the citizens while as a commuter rail toward the central government.

Line S1
The first phase of Line S1 begins at Tongling station in the west, south of Wenzhou South Railway Station, and ends at Shuang'ou Avenue station in the east, with 53.5 km of track and 18 stations. Construction of the Shitan Tunnel of Line S1 began on 11 November 2011, and the rest of the line officially began construction in March 2013. Line S1 was originally scheduled to open in October 2018. The west section of the line (34.38 km with 12 stations) was opened on January 23, 2019. The last section of the line (19.127 km with 6 stations) was opened on September 28, 2019.

Line S2
The first phase of Line S2 runs from Qingdong Road Station in Yueqing to Dongshan Station in Rui'an, with 62.945 km of track and 20 stations, including one at Wenzhou Longwan International Airport. Construction of S2 began in January 2016. Line S2 will feature distinct express and local services. Line S2 opened on 26 August 2023.

Approved lines
As of 2023, one line is under construction: Line S3.

The first phase of Wenzhou Rail Transit received official approval from the National Development and Reform Commission in September 2012. This phase includes three lines: S1, S2, and S3, with a total length of 140.7 km. Construction is projected to complete by 2018, at an estimated cost of about 50 billion yuan.

Line S3
The first phase of Line S3 starts at, along Wenrui Avenue, passes through Nanbaixiang, Xianyan, Tangxia to Rui'an City, then crosses Feiyun River to the south, passes Kunyang, Aojiang, Longgang, to Lingxi. It is expected to open in 2027.

The first phase of the Wenzhou Rail Transit S3 Line has a total length of 31.05 km, of which the underground line is 2.821 km long and the elevated line is 24.17 km long. The first phase of the Wenzhou Rail Transit S3 Line has 13 stations, including 10 elevated stations and 3 underground stations.

The second phase of the line for 26.40 billion yuan is 66 km long, has 17 stations, and the proportion of underground lines is 32.4% and runs through districts Rui'an City, Pingyang County, Cangnan County, and Longgang City.

Short-term plans
On March 21, 2019, the Wenzhou government announced plans for Line M1 and Line M2. As of, Line M1 and Line M2 have not been approved by NDRC, so actual construction have not started.

Line M1
Line M1 is a fully underground line with 23 stations. The length of the line is 32.5 km.

Line M2
Phase 1 of Line M2 is a fully underground line with 23 stations. The length of the line is 27.9 km.

Line S4
Line S4 is planned to run in a northwest-southeast direction, from Tengqiao in the west to Huanghua Station in the east, where it will connect with Line S2. Its total length is projected to be 47.15 km, with 10 stations.

Network map
Map showing operational and under construction lines of Wenzhou Rail Transit.