Line 4 (Shanghai Metro)

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Line 4
SHM Line 4 icon.svg
Yishan Road Station Line 4.jpg
A view of the Yishan Road station.
Overview
Other name(s)M1 (planned name)
Pearl line phase II (Chinese: 明珠线二期)
Loop line (Chinese: 环线)
StatusOperational
LocaleHuangpu, Xuhui, Changning, Putuo, Jing'an, Hongkou and Yangpu districts; Pudong
Shanghai
TerminiContinuous loop from/to Yishan Road (terminal for trains to depot)
Stations26 (of which 9 shared with Line 3)
Service
TypeUrban rail transit in China Rapid transit
SystemShanghai Metro Shanghai Metro
Operator(s)Shanghai No.3 Metro Operation Co. Ltd.
Depot(s)Puhuitang Depot
Rolling stock42 Type A 6-car train
Daily ridership976,000 (2019 Peak)[1]
History
Commenced2001; 21 years ago (2001)
OpenedDecember 31, 2005; 16 years ago (2005-12-31)
Last extensionSeptember 21, 2007; 14 years ago (2007-09-21)
Technical
Line length33.7 km (20.9 mi) (of which 11.57 km (7.2 mi) shared with Line 3)
Number of tracks2
CharacterUnderground and elevated (shared track with line 3 portion)
Track gauge1,435 mm (4 ft 8+1⁄2 in)
ElectrificationOverhead lines (1500 volts DC)
Operating speed80 km/h (50 mph)
Average speed: 32.7 km/h (20 mph)
Route map
Route on the Shanghai map:
  • Shanghai Metro Line4 Map.png
To scale geographic map:
  • Shanghai Metro Line 4.svg

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.


History[]

Shanghai metro line 4 opening history
Segment Commencement Length Station(s) Name
Damuqiao Road — Hongqiao Road 31 December 2005 3.94 km (2.45 mi) 5 Line 3 & 4 realignment project
Hongqiao Road — Baoshan Road 11.52 km (7.16 mi)
(tracks sharing) 		9
Baoshan Road — Lancun Road 9.76 km (6.06 mi) 8
Lancun Road — Damuqiao Road 29 December 2007 8.7 km (5.41 mi) 4 Loop line connector project

October 11, 2009 became China's first national "Worker Pioneer" subway line.

Construction accident[]

On August 20, 2001 Luban Road construction site excavation during construction, earthmoving sudden landslide, killing four people died who were buried in the landslide.

At 4 o'clock in the morning on July 1, 2003, the Pudongnan Road-Nanpu Bridge section of Line 4 suddenly saw water seepage during the construction of the connecting passage between the upper and lower tunnels. After that, a large amount of quicksand poured into the tunnel, causing internal and external pressure imbalance, which caused partial collapse of the tunnel. It has a funnel-shaped settlement. At 9 o'clock in the morning, the podium of a nearby building on South Zhongshan Road collapsed; beginning in the early morning of the July 2, the flood wall of Dongjiadu Waima Road section began to sink and crack due to the settlement. The embankment collapsed in a serious accident. The Linjiang Garden Building near the scene also experienced subsidence, the most serious settlement exceeded 7 millimeters in an hour, and the cumulative settlement reached 15.6 millimeters. This incident affected the plan for the opening of the entire line of Line 4. In August 2004, the Dongjiadu section restoration project was started and it was restored with the opening of the second section in July 2007.[2] On November 5, 2004, the Shanghai Second Intermediate People’s Court issued a judgement on the deputy project manager of the subcontractor for the construction of the intermediate air shaft and side channel freezing method. The court convicted him for the crime of a major liability accident which has a fixed-term imprisonment of two years and six months and a probation of three years. The project director representative has a fixed-term imprisonment of six-month with a probation period of two years. The general contractor’s project manager for two years with a fixed-term imprisonment of one year and six months.[3]

At Hailun Road unbalanced subsidence was discovered. From January 22 to January 28, 2012, it was closed for an overhaul.[4][5]

Stations[]

Further information: List of Shanghai Metro stations

Service routes[]

Shanghai metro line 4 service routes
  • M - Mainline: Full Loop
Routes Station name  3  Connections Distance Location Open-
ing 		Plat-
form[6]
M P English Chinese km min
— ↑ Loop line towards Shanghai Indoor Stadium (Outer Loop) ↑ — 1.14 1.14 3
● ● Yishan Road 宜山路  3 [a]  9  0.00 0.00 0 Xuhui 31 Dec
2005[7] 		Underground Island
● Hongqiao Road 虹桥路 ●  10  1.37 1.37 3 Changning Elevated Side
● West Yan'an Road 延安西路 ● Trolleybuses in Shanghai Yan'an BRT 1.41 2.78 5
● Zhongshan Park 中山公园 ●  2  0.96 3.74 7 Elevated Island
● Jinshajiang Road 金沙江路 ●  13  1.66 5.40 10 Putuo Elevated Side
● Caoyang Road 曹杨路 ●  11   14 [b] 0.90 6.30 12
● Zhenping Road 镇坪路 ●  7  1.40 7.70 14
● Zhongtan Road 中潭路 ● 1.44 9.14 17
● Shanghai Railway Station 上海火车站 ●  1 [c] China Railway SHH 1.72 10.86 19 Jing'an At-grade Island
● Baoshan Road 宝山路 ● 2.03 12.89 23 Elevated Side
● Hailun Road 海伦路  10  1.51 14.40 26 Hongkou Underground Island
● ◐ Linping Road 临平路 1.07 15.47 28 Underground Island & Side
● ● Dalian Road 大连路  12  1.40 16.87 30 Yangpu Underground Island
● ● Yangshupu Road 杨树浦路 0.72 17.59 32
● ● Pudong Avenue 浦东大道  14  1.44 19.03 35 Pudong
● ● Century Avenue 世纪大道  2   6   9  1.43 20.46 37
● ● Pudian Road 浦电路 [d] 0.85 21.31 39
● ● Lancun Road 蓝村路  6  1.34 22.65 41
● ● Tangqiao 塘桥 1.21 23.86 44 29 Dec
2007[8]
● ● Nanpu Bridge 南浦大桥 2.13 25.99 47 Huangpu Underground Split
● ● South Xizang Road 西藏南路  8  1.22 27.21 49 Underground Island
● ● Luban Road 鲁班路 1.47 28.68 51
● ● Damuqiao Road 大木桥路  12  1.19 29.87 53 Xuhui 31 Dec
2005[7]
● ● Dong'an Road 东安路  7  0.62 30.49 55
● ● Shanghai Stadium 上海体育场 1.51 32.00 57
● ● Shanghai Indoor Stadium 上海体育馆  1  0.67 32.67 59
— ↓ Loop line towards Yishan Road (Inner Loop) ↓ — 1.14 33.81 62

Important stations[]

Future extensions[]

There are plans to end the shared tracks with Line 3. Plans include a new underground track for line 4 on the northwestern past.

Station name change[]

Headways[]

Shanghai Metro Line 4 Headways
Time Inner Loop (running clockwise) Outer Loop (running counterclockwise)
Monday - Friday (Working Days)
Morning peak 7:00–9:00
Linping Road → Century Avenue → Yishan Road:
About 3 minutes and 10 seconds;
Yishan Road → shared track line  3 / 4  → Linping Road:
About 3 minutes and 45 seconds;
Yishan Road - Century Avenue - Dalian Road:
About 5 minutes and 30 minutes;
Dalian Road - shared track line  3 / 4  - Yishan Road:
About 7 minutes and 30 seconds
Off-peak 9:00–17:00 About 7 minutes
Evening peak 17:00–19:30 About 5 minutes
Other hours
First Train — 7:00
19:30 — Last Train
About 5 - 12 minutes
Saturday and Sunday (Weekends)
Peak hours 7:00–21:00 About 6 minutes and 30 seconds
Other hours
First Train — 7:00
21:00 — Last Train
About 5 - 12 minutes

[9]

Technology[]

Signaling[]

Lines 3 and 4 has been operating over capacity due to large passenger flows for a number of years. With the continuous extensions of operating time, the problems of aging equipment and increasing passenger demand will further increase the operating pressure of the two lines. In June 2021 it was announced that Shanghai Metro has started to update of the signal system of Lines 3 and 4 and finish before December 31, 2024.[10] These are the last lines in the system that are not equipped with CBTC systems capable of headways as low as 90 seconds. CASCO successfully won the bid for the renewal and transformation of the signaling for Lines 3 and 4 using its self-developed Qiji TACS system.[11]

Rolling Stock[]

Shanghai Metro Line 4 rolling stock
Set Manufacturer Time of
manufac-
turing		 Type No
of
car		 Assembly[e] Series Notes
28 Siemens and CRRC Zhuzhou Locomotive Co., Ltd. 2004-2007 A 6 Tc+Mp+M+M+Mp+Tc 04A01 [12] In February 2009, 8 trains used on Line 2 returned to Line 4 (set 04A01; numbers 421-428).
14 Alstom Metropolis, CNR Changchun Railway Vehicles Co., Ltd. and Shanghai Electric 2014-2017 A 6 Tc+Mp+M+M+Mp+Tc 04A02 An additional 13 trains (numbers 437-449) will be returned to Line 4 after Line 3 and Line 4 are separated.
Shanghai Metro Line 4 former rolling stock
Set Manufacturer Time in
oper-
ation		 Type No
of
car		 Assembly Series Notes
13 Alstom Metropolis A 6 Tc+Mp+M+M+Mp+Tc 04A02 Currently assigned to Line 3 (set 03A02; numbers 337-349). These will be returned to Line 4 (set 04A02; numbers 437-449) after Line 3 and Line 4 are separated.

  • 04A01 train

  • 04A02 train

Notes[]

  1. ^ It is the southernmost station shared by Line 3 and Line 4, although the two lines do not share tracks (the Line 3 station is elevated).
  2. ^ Virtual transfer with line 14 – passengers who hold the Shanghai Public Transportation Card and transfer within 30 minutes of exiting the station are able to transfer to other lines without exiting the system.
  3. ^ Virtual transfer with Line 1 – passengers who hold the Shanghai Public Transportation Card and transfer within 30 minutes of exiting the station are able to transfer to other lines without exiting the system.
  4. ^ There are two stations named Pudian Road that are about 200 meters apart, Pudian Road on Line 4 and Pudian Road on Line 6. Free transfers between the two stations are physically not possible since both are distinct stations located along different parts of Pudian Road. A transfer between the two stations requires users to leave the fare paid area and cross an underground supermarket. This transfer will be counted as two separate journeys requiring two fares.
  5. ^ Tc: Trailer with cab; Mp: EMU with pantograph; M: EMU without pantograph.

References[]

  1. ^ "Metro breaks records" (in Chinese). Shanghai Metro 163 Official. 2019-03-09. Retrieved 2019-03-09.
  2. ^ Shanghai's "Line 4 Accident" awakened the dream of 100 billion investment in China's metro. China Business News. 2003-07-14.
  3. ^ Shanghai Second Intermediate People's Court issued "(2004) Shanghai Second Middle School Punishment Chuzi No. 71 Criminal Judgment".
  4. ^ The closure of Hailun Road Station on Line 4 during the Spring Festival will not affect Hailun Road Station on Line 10. Shanghai Metro Transportation and Management Center. 2012-01-17.
  5. ^ The overhaul of Hailun Road Station on Line 4 will be completed on schedule and the first train will resume normal operation on the 29th. Shanghai Metro Transportation Management Center. 2012-01-28.
  6. ^ 乘车指南 > Station信息. Shanghai Metro Official Site. Retrieved 2015-12-17. Instructions: 点击相应线路，选择Station，点击"站层图"可查看相应Station的站台结构。
  7. ^ a b 四号线开通 2万人尝鲜. Sina. 2006-01-01.
  8. ^ 上海轨交4号线29日环通. Sina. 2007-12-24.
  9. ^ "Schedule" (in Chinese). Shanghai Metro. 2021-07-07. Retrieved 2021-07-07.
  10. ^ Blueprint to bring Shanghai's New Cities closer
  11. ^ CASCO Qiji™ TACS is on the stage, Shanghai Line 3/4 will start to upgrade the signal system!
  12. ^ 上海市明珠二期轨道交通车辆 (in Chinese). 2013-11-24. Retrieved 2020-03-20.
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