Wikipedia

Line 4 (Shanghai Metro)

Line 4 is a loop line of the Shanghai Metro network. Its older rolling stock carry a bright purple colour belt to differentiate them from Line 3 trains which share a portion of its route, while the newer stock features a yellow and purple livery, which the exact line is labelled using sticker or screens saying "Line 3" or "Line 4". 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.

Line 4
A view of the Yishan Road station.
Overview
Other name(s)M4 (planned name);
Pearl line phase II (Chinese: 明珠线二期);
Loop line (Chinese: 环线)
Native name上海地铁4号线
StatusOperational
OwnerShanghai Rail Transit Pearl Line (Phase II) Development Co., Ltd. (except shared track with line 3 portion)
LocaleHuangpu, Xuhui, Changning, Putuo, Jing'an, Hongkou, Yangpu, and Pudong districts, Shanghai, China
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 Class A 6-car trains
Daily ridership976,000 (2019 Peak)[1]
History
Commenced2001; 23 years ago (2001)
OpenedDecember 31, 2005; 18 years ago (2005-12-31)
Last extensionSeptember 21, 2007; 17 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)
SignallingALSTOM/CASCO URBALISTM 200[2] (fixed block CBTC, current)
CASCO Qiji TACS (2025 exp.)[3]
Route map
Route on the Shanghai map:
To scale geographic map:

History

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Shanghai metro line 4 opening history
Segment Commencement Opened Length Station(s) Name Investment
Damuqiao Road — Hongqiao Road 26 Dec 2000 31 Dec 2005 3.94 km (2.45 mi) 5 Pearl Line (second phase) ¥12.6 billion
Hongqiao Road — Baoshan Road 11.52 km (7.16 mi)
(tracks sharing) 		9 Line 3 & 4 realignment project
Baoshan Road — Lancun Road 9.76 km (6.06 mi) 8 Pearl Line (second phase)
Lancun Road — Damuqiao Road 22 Oct 2005 29 Dec 2007 8.7 km (5.41 mi) 4 Loop line connector project

The line became China's first national "Worker Pioneer" metro line on the 11th October, 2009.

Construction accident

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On August 20, 2001, on 20.10 at Luban Road construction site during excavating the foundation pit, earthmoving sudden landslide, killing four people died who were buried in the landslide.[4]

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 (0.28 in) in an hour, and the cumulative settlement reached 15.6 millimeters (0.61 in). 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.[5] 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.[6]

At Hailun Road unbalanced subsidence was discovered. From January 22 to January 28, 2012, it was closed for an overhaul.[7][8]

Stations

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Further information: List of Shanghai Metro stations

Service routes

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Shanghai metro line 4 service routes
Routes Station name  3  Connections Distance Location Open-
ing 		Plat-
form[9]
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 [i]  9  0.00 0.00 0 Xuhui 31 Dec
2005[10] 		Underground Island
● Hongqiao Road 虹桥路 ●  10  1.37 1.37 3 Changning Elevated Side
● West Yan'an Road 延安西路 ●   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 [ii] 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 [iii]     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
● ● Xiangcheng Road[iv] 向城路 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[11]
● ● 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[10]
● ● 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
  1. ^ It is the southernmost station shared by lines 3 and 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. ^ Formerly named Pudian Road station (浦电路站)

Important stations

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Future extensions

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There are abandoned 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

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Headways

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Shanghai Metro Line 4 headway[12]
Time Inner Loop (running clockwise) Outer Loop (running counterclockwise)
Monday - Friday (Working Days)
AM peak 7:00–9:00
Linping Road → Century Avenue → Yishan Road:
About 3 min and 10 sec
Yishan Road → shared track w/  3  → Linping Road:
About 3 min and 45 sec
Yishan Road - Century Avenue - Dalian Road:
About 5 min and 30 min;
Dalian Road - shared track w/  3  - Yishan Road:
About 7 min and 30 sec
Off-peak 9:00–17:00 About 7 min
PM peak 17:00–19:30 About 5 min
Other
hours
Before 7:00
After 19:30
About 5 - 12 min
Saturday and Sunday (Weekends)
Peak 7:00–21:00 About 6 min and 30 sec
Other
hours
Before 7:00
After 21:00
About 5 - 12 min

Technology

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Signaling

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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.[13] These are the last lines in the system that are equipped with fixed block Alstom URBALISTM 200 system, 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.[14]

Rolling Stock

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The line operates with 6-car Class A trains.[i]

Shanghai Metro Line 4 rolling stock
Fleet numbers Manufacturer Time of manufacturing Class No
of
car		 Assembly[ii] Rolling stock Number Notes
168 Siemens (0401,0402)
CRRC Zhuzhou Locomotive Co., Ltd. (0403–0428)		 2004-2007 A 6 Tc+Mp+M+M+Mp+Tc 04A01 0401-0428
(040011-041681)		 [15] Original name: AC05.
In February 2009, 8 trains used on line 2 (numbers: 0225-0232) returned to line 4.
162 SATCO[iii] (0430–0455)
CNR Changchun Railway Vehicles Co., Ltd. (0429)		 2014-2017 A 6 Tc+Mp+M+M+Mp+Tc 04A02 0429-0455
(041691-043301)		 13 trains (042171-042941, trainset 0437-0449) have been assigned to line 3.
  1. ^ Class A carriage: 21-24m in length, 3.0m in width and 3.8m in height; Capacity: about 310 people.
  2. ^ Tc: Trailer with cab; Mp: EMU with pantograph; M: EMU without pantograph.
  3. ^ SATCO (Shanghai Alstom Transportation Equipment Co., Ltd.) is a joint venture between Alstom Metropolis and Shanghai Electric.
  •  
    04A01 train
  •  
    04A02 train


References

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  1. ^ "Metro breaks records" (in Chinese). Shanghai Metro 163 Official. 2019-03-09. Retrieved 2019-03-09.
  2. ^ "用于上海地铁的URBALIS". alstom.com. Retrieved July 31, 2003.
  3. ^ "Here Comes CASCO TRANAVI Qiji™ TACS! Shanghai Metro Line 3/4 will Soon Start the Upgrade of its Signaling System!". www.casco.com.cn. Retrieved June 26, 2021.
  4. ^ Wei, Zhou; Zhihong, Kou (August 21, 2001). "上海一建筑工地20日晚发生塌方事故 四人死亡". sina.com.cn.
  5. ^ Shanghai's "Line 4 Accident" awakened the dream of 100 billion investment in China's metro. China Business News. 2003-07-14.
  6. ^ Shanghai Second Intermediate People's Court issued "(2004) Shanghai Second Middle School Punishment Chuzi No. 71 Criminal Judgment".
  7. ^ 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.
  8. ^ 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.
  9. ^ 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。
  10. ^ a b 四号线开通 2万人尝鲜. Sina. 2006-01-01.
  11. ^ 上海轨交4号线29日环通. Sina. 2007-12-24.
  12. ^ "Schedule" (in Chinese). Shanghai Metro. 2021-07-07. Retrieved 2021-07-07.
  13. ^ Blueprint to bring Shanghai's New Cities closer
  14. ^ CASCO Qiji™ TACS is on the stage, Shanghai Line 3/4 will start to upgrade the signal system!
  15. ^ 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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