Line S1^[7] (Chinese: 北京地铁S1线; pinyin: běijīng dìtiě S-yī xiàn) of the Beijing Subway is a medium-low speed maglev line. It is operated by the Beijing Mass Transit Railway Operation Corporation Limited. The line was opened on 30 December 2017. It starts from Pingguoyuan in Shijingshan District and goes west towards Shichang in Mentougou District.

Quick Facts Overview, Other name(s) ...

Line S1
A line S1 train arriving Qiaohuying station
Overview
Other name(s)	M26 (planned name) Line 26 Mentougou Line[1] Datai Line[2] Beijing Low-speed Maglev[3] Beijing Maglev[4]
Status	Operational
Locale	Shijingshan and Mentougou districts Beijing
Termini	Shichang Pingguoyuan
Stations	8
Service
Type	Rapid Transit, Maglev
System	Beijing Subway
Operator(s)	Beijing Mass Transit Railway Operation Co., Ltd
Depot(s)	Shimenying
History
Opened	30 December 2017; 6 years ago (2017-12-30)
Technical
Line length	10.2 km (6.3 mi)[5]
Electrification	1,500 V DC third rail linear motor
Operating speed	100 km/h (62 mph)[6]
Route map Legend Jingmen railway line 6 Lucheng Pingguoyuan Line 6 Line 1 (station closed for renovation) Fushouling (to be opened 2024) – Universal Resort Jin'anqiao Line 6 Line 11 Moshikou－Xinshougang (Shougang Park) Shijingshan tunnel of S1 line Shijingshan tunnel of Fengsha railway Yongding River Sidaoqiao Qiaohuying Fengcun ditch Shang'an Liyuanzhuang Xifengsi ditch Xiaoyuan Shichang Shimenying depot v t e

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The line uses a medium-low speed magnetic levitation technology which can give a top speed of 105 km/h (65 mph).^[8][9] The actual operating speed of the line is either 80 or 100 km/h (50 or 62 mph).^[10][6]

The line is 10.236 km (6.360 mi) long, with 9.953 km (6.185 mi) elevated and 0.283 km (0.176 mi) underground. There are eight stations. ^[11]

Six-coach maglev trains were built by the CRRC Tangshan, a subsidiary of CRRC.^[12] It is China's third commercial maglev train in operation.^[12] Line S1 is part of Beijing's attempts to tackle environmental problems caused by heavy car use, coal burning and fast urbanization by upgrading its urban rail systems.^[12]

The Line S1 designation is a holdover from a defunct plan to build several suburban railway lines in Beijing. Line S1 was envisioned to reuse the Jingmen Railway connecting Cishousi station to Mentougou District.^[13] That plan was abandoned and the section between Pingguoyuan and Cishousi stations was replaced with Phase 3 of Line 6, and the other section was replaced with today's Maglev S1 Line.

Construction of the line began on April 20, 2015.^[14] The line was completed west of the Yongding River on March 31, 2017,^[15] and the initial section from Jin'anqiao to Shichang opened on December 30, 2017.^[16]

When the Line S1 originally opened in 2017, it was not connected to the rest of the subway network. With the opening of Line 6 Phase 3 on 30 December 2018, passengers can transfer to Line 6 at Jin'anqiao.

In July 2021, a major bridge was completed, and the opening of the extension to Pingguoyuan planned for the end of the year.^[17] The extension opened on December 31, 2021.

Being the only maglev line, the rolling stock is incompatible with any other line in the system. The rolling stock was made by CRRC Tangshan.^[12] Trains consist of 6 cars, with the train as a whole being 89 meters (292 ft 0 in) long and 3 meters (9 ft 10 in) wide, each car having. The top speed of the trains is 105 km/h (65 mph), with the operating speed being either 80 or 100 km/h (50 or 62 mph).^{[8][9][10][6]}