Line 4 (Shanghai Metro)

{{Short description|Metro line of the Shanghai Metro}} {{Infobox rail line | name = | native_name = 上海地铁4号线 | native_name_lang = zh | other_name = M4 (planned name); Pearl line phase II ({{lang-zh|s=明珠线二期}}); Loop line ({{lang-zh|s=环线}}) | logo = Shmetro Line 4 Logo.svg | logo_width = 43px | color = {{rcr|SHM|4}} | image = 04A01 train set 0401 approaching Zhongshan Park Station 20250619134900.jpg | image_width = 300px | image_alt = | caption = An 04A01 train approaching Zhongshan Park station. | type = {{rint|cn|metro}} Rapid transit | system = {{rint|shanghai|metro}} Shanghai Metro | status = Operational | locale = Huangpu, Xuhui, Changning, Putuo, Jing'an, Hongkou, Yangpu, and Pudong districts, Shanghai, China | start = Continuous loop from/to {{stl|SHM|Yishan Road}} (terminal for trains to depot) | end = | connectinglines = | stations = 26 (of which 9 shared with line 3) | routes = | daily_ridership = 976,000 (2019 Peak)<ref name ="ridership record">{{Cite web |url=http://dy.163.com/v2/article/detail/E9QP84820514BTST.html |title=Metro breaks records |access-date=2019-03-09 |publisher=Shanghai Metro 163 Official |date=2019-03-09 |language=zh }}</ref> | yearcommenced = {{Start date and age|2001}} | open = {{Start date and age|2005|12|31}} | lastextension = {{Start date and age|2007|09|21}} | close = | owner = Shanghai Rail Transit Pearl Line (Phase II) Development Co., Ltd. (except shared track with line 3 portion) | operator = Shanghai No. 3 Metro Operation Co. Ltd. | character = Underground and elevated (shared track with line 3 portion) | depot = Puhuitang Yard | stock = 04A01 04A02 | linelength = {{Convert|33.7|km|mi|1|abbr=on}} (of which {{Convert|11.57|km|mi|1|abbr=on}} shared with line 3) | tracklength = | tracks = 2 | gauge = {{RailGauge|sg}} | signalling = ALSTOM/CASCO URBALISTM 200<ref>{{cite web |title=用于上海地铁的URBALIS |url=https://www.alstom.com/cn/press-releases-news/2003/7/URBALIS-for-Shanghai-metro-20030731 |website=alstom.com |access-date=July 31, 2003}}</ref> (Enhanced fixed block, current) CASCO Qiji TACS (2025 exp.)<ref>{{cite web |title=Here Comes CASCO TRANAVI Qiji™ TACS! Shanghai Metro Line 3/4 will Soon Start the Upgrade of its Signaling System! |url=https://www.casco.com.cn/en/news/detail.aspx?id=4047 |website=www.casco.com.cn |access-date=June 26, 2021}}</ref> | electrification = Overhead lines (1500 volts DC) | speed = {{Convert|80|km/h|mph|0|abbr=on}} Average speed: {{Convert|32.7|km/h|mph|0|abbr=on}} | elevation = | website = | map = {{Collapsible list |titlestyle=background: #{{rcr|SHM|4}}; text-align:center; |framestyle=border:none; padding:0; |expand=true |title={{ font color | white| Route on the Shanghai map:}} |1=294px|center}} {{Collapsible list |titlestyle=background: #{{rcr|SHM|4}}; text-align:center; |framestyle=border:none; padding:0; |expand=true |title={{ font color | white| To scale geographic map:}} |1=294px|center}} {{unbulleted list |item_style =background: #{{rcr|SHM|4}}; |{{Shanghai Metro/Line 4}}}} | map_state = }} '''Line 4''' is a loop line of the Shanghai Metro network. The older rolling stock 04A01 carry a bright purple colour belt to differentiate them from '''Line 3''' trains which share a portion of its route, while the newer 04A02 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'' ({{lang|zh-hans|外圈}}), while the other line is known as the ''Inner Loop'' ({{lang|zh-hans|内圈}}). Although it is a loop line, trains returning to the depot use {{stl|SHM|Yishan Road}} as a terminal to let all passengers disembark. The first segment of the line between {{stl|SHM|Damuqiao Road}} and {{stl|SHM|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== {|border=0 style="border:1px solid #999;background-color:white;text-align:left;font-size:90%" class="mw-collapsible" !<onlyinclude> colspan="7" style="text-align: center" bgcolor=#{{rcr|SHM|4}} | {{ font color | white|Shanghai metro line 4 opening history}} |-bgcolor=#cccccc !Segment!!Commencement!!Opened!!Length!!Station(s)!!Name!!Investment |-bgcolor=#be99e7 |style="text-align: left;"| Damuqiao Road — Hongqiao Road |rowspan="3"| 26 Dec 2000 |rowspan="3"| 31 Dec 2005 | {{convert|3.94|km|mi|2|abbr=on}} | 5 | Pearl Line (second phase) |rowspan=3|¥12.6 billion |-bgcolor=#be99e7 |style="text-align: left;"| Hongqiao Road — Baoshan Road | {{convert|11.52|km|mi|2|abbr=on}} {{small|(tracks sharing)}} | 9 | Line 3 & 4 realignment project |-bgcolor=#be99e7 |style="text-align: left;"| Baoshan Road — Lancun Road | {{convert|9.76|km|mi|2|abbr=on}} | 8 | Pearl Line (second phase) |-bgcolor=#deccf3 |style="text-align: left;"| Lancun Road — Damuqiao Road | 22 Oct 2005 | 29 Dec 2007 | {{convert|8.7|km|mi|2|abbr=on}} | 4 |style="text-align: left;"| Loop line connector project | |- style= "background:#{{rcr|SHM|4}}; height: 2pt" | colspan = "7" |</onlyinclude> |} The line became China's first national "Worker Pioneer" metro line on the 11th October, 2009.

===Construction accident=== On August 20, 2001, on 20.10 at {{stl|SHM|Luban Road}} construction site during excavating the foundation pit, earthmoving sudden landslide, killing four people died who were buried in the landslide.<ref>{{cite news |last1=Wei |first1=Zhou |last2=Zhihong |first2=Kou |title=上海一建筑工地20日晚发生塌方事故四人死亡 |url=https://news.sina.com.cn/c/2001-08-21/334695.html |agency=sina.com.cn |date=August 21, 2001}}</ref>

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 {{Convert|7|mm|sp=us}} in an hour, and the cumulative settlement reached {{Convert|15.6|mm|sp=us}}. 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.<ref>[https://web-archive-org.translate.goog/web/20150504032340/http://www.china.com.cn/chinese/2003/Jul/365477.htm?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=nl&_x_tr_pto=ajax,se,elem Shanghai's "Line 4 Accident" awakened the dream of 100 billion investment in China's metro.] China Business News. 2003-07-14.</ref> 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.<ref>[https://web.archive.org/web/20171222050749/http://www.criminallawbnu.cn/criminal/info/showpage.asp?pkID=14023 Shanghai Second Intermediate People's Court issued "(2004) Shanghai Second Middle School Punishment Chuzi No. 71 Criminal Judgment".]</ref>

At {{stl|SHM|Hailun Road}} unbalanced subsidence was discovered. From January 22 to January 28, 2012, it was closed for an overhaul.<ref>[https://web.archive.org/web/20171222052321/http://www.shmetro.com/node49/201201/con110821.htm 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.</ref><ref>[https://web.archive.org/web/20171222052135/http://www.shmetro.com/node49/201201/con110864.htm 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.</ref>

==Stations== {{Further|List of Shanghai Metro stations}}

===Service routes=== <onlyinclude> {|border=1 style="border-collapse: collapse;" class="mw-collapsible" ! colspan="12" style="text-align: center" bgcolor=#{{rcr|SHM|4}} | {{ font color | white|Shanghai metro line 4 service routes}} |- | colspan="12" style="text-align: left" | * '''M''' - Mainline: Full Loop * '''P''' - Partial Mainline: {{stl|SHM|Linping Road}} ↔ {{stl|SHM|Yishan Road}} |-bgcolor=#{{rcr|SHM|4}} ! rowspan="1" colspan="2" |{{ font color | white|Routes}} ! colspan="2" | {{ font color | white|Station name}} ! rowspan="2" style="text-align:center; background:#{{rcr|SHM|3}};"| {{rint|shanghai|3}} ! rowspan="2" | {{ font color | white|Connections}} ! colspan="3" rowspan="1" | {{ font color | white|Distance}} ! rowspan="2" | {{ font color | white|Location}} ! rowspan="2" | {{ font color | white|Open- ing}} ! rowspan="2" | {{ font color | white|Plat- form<ref name="platform">{{cite web|url=http://service.shmetro.com/czxx/index.htm|script-title=zh:乘车指南 > Station信息|work=Shanghai Metro Official Site|access-date=2015-12-17|archive-date=2014-06-12|archive-url=https://web.archive.org/web/20140612041859/http://service.shmetro.com/czxx/index.htm|url-status=dead}} Instructions: {{lang|zh-hans|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。}}</ref>}} |-bgcolor=#{{rcr|SHM|4}} ! rowspan="1" | {{ font color | white|M}} ! rowspan="1" | {{ font color | white|P}} ! {{ font color | white|{{small|English}}}} ! {{ font color | white|{{small|Chinese}}}} ! colspan="2" |{{ font color | white|{{small|km}}}} ! {{ font color | white|{{small|min}}}} |- | colspan = "12" | |- style = "background:#{{rcr|SHM|4}}; height: 2pt" | colspan = "12" | |- bgcolor="lightgrey" | style="font-size:85%" colspan="6" style="text-align:center;"| — ↑ Loop line towards {{stl|SHM|Shanghai Indoor Stadium}} (Outer Loop) ↑ — |1.14 |1.14 |3 |colspan = "3" | |- style = "background:#{{rcr|SHM|4}}; height: 2pt" | colspan = "12" | |- |style="text-align:center;"|●||style="text-align:center;"|● |{{stl|SHM|Yishan Road}} |{{large|{{lang|zh-cn|宜山路}}}} | |{{rint|shanghai|3}}{{efn-lr|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).}} {{rint|shanghai|9}} |0.00 |0.00 |0 |Xuhui |rowspan=18|31 Dec 2005<ref name="Line4">{{cite web|url=http://news.sina.com.cn/o/2006-01-01/09157871593s.shtml|script-title=zh:四号线开通 2万人尝鲜|date=2006-01-01|publisher=Sina}}</ref> |Underground Island |- |style="text-align:center;"|●||style="text-align:center;"| |{{stl|SHM|Hongqiao Road}} |{{large|{{lang|zh-cn|虹桥路}}}} |style="text-align:center; background:#{{rcr|SHM|3}};color:black;"|● |{{rint|shanghai|10}} |1.37 |1.37 |3 |rowspan=3|Changning |rowspan=2|Elevated Side |- |style="text-align:center;"|●||style="text-align:center;"| |{{stl|SHM|West Yan'an Road}} |{{large|{{lang|zh-cn|延安西路}}}} |style="text-align:center; background:#{{rcr|SHM|3}};color:black;"|● |{{rint|bus|rapid|link=Trolleybuses in Shanghai}} Yan'an BRT |1.41 |2.78 |5 |- |style="text-align:center;"|●||style="text-align:center;"| |{{stl|SHM|Zhongshan Park}} |{{large|{{lang|zh-cn|中山公园}}}} |style="text-align:center; background:#{{rcr|SHM|3}};color:black;"|● |{{rint|shanghai|2}} |0.96 |3.74 |7 |Elevated Island |- |style="text-align:center;"|●||style="text-align:center;"| |{{stl|SHM|Jinshajiang Road}} |{{large|{{lang|zh-cn|金沙江路}}}} |style="text-align:center; background:#{{rcr|SHM|3}};color:black;"|● |{{rint|shanghai|13}} |1.66 |5.40 |10 |rowspan=4|Putuo |rowspan=4|Elevated Side |- |style="text-align:center;"|●||style="text-align:center;"| |{{stl|SHM|Caoyang Road}} |{{large|{{lang|zh-cn|曹杨路}}}} |style="text-align:center; background:#{{rcr|SHM|3}};color:black;"|● |{{rint|shanghai|11}} {{rint|shanghai|14}}{{efn-lr|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.}} |0.90 |6.30 |12 |- |style="text-align:center;"|●||style="text-align:center;"| |{{stl|SHM|Zhenping Road}} |{{large|{{lang|zh-cn|镇坪路}}}} |style="text-align:center; background:#{{rcr|SHM|3}};color:black;"|● |{{rint|shanghai|7}} |1.40 |7.70 |14 |- |style="text-align:center;"|●||style="text-align:center;"| |{{stl|SHM|Zhongtan Road}} |{{large|{{lang|zh-cn|中潭路}}}} |style="text-align:center; background:#{{rcr|SHM|3}};color:black;"|● | |1.44 |9.14 |17 |- |style="text-align:center;"|●||style="text-align:center;"| |{{stl|SHM|Shanghai}} |{{large|{{lang|zh-cn|上海火车站}}}} |style="text-align:center; background:#{{rcr|SHM|3}};color:black;"|● |{{rint|shanghai|1}}{{efn-lr|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.}} {{nowrap|{{rint|cn|rail}} {{rint|cn|crh|link=Shanghai railway station}} SHH}} |1.72 |10.86 |19 |rowspan=2|Jing'an |At-grade Island |- |style="text-align:center;"|●||style="text-align:center;"| |{{stl|SHM|Baoshan Road}} |{{large|{{lang|zh-cn|宝山路}}}} |style="text-align:center; background:#{{rcr|SHM|3}};color:black;"|●{{efn-lr|Only the clockwise platform.}} | |2.03 |12.89 |23 |Elevated Island & Side |- |style="text-align:center;"|●||style="text-align:center;"| |{{stl|SHM|Hailun Road}} |{{large|{{lang|zh-cn|海伦路}}}} |rowspan="16"| |{{rint|shanghai|10}} |1.51 |14.40 |26 |rowspan=2|Hongkou |Underground Island |- |style="text-align:center;"|●||style="text-align:center;"|{{resize|70%|◐}} |{{stl|SHM|Linping Road}} |{{large|{{lang|zh-cn|临平路}}}} | |1.07 |15.47 |28 |Underground Island & Side |- |style="text-align:center;"|●||style="text-align:center;"|● |{{stl|SHM|Dalian Road}} |{{large|{{lang|zh-cn|大连路}}}} |{{rint|shanghai|12}} |1.40 |16.87 |30 |rowspan=2|Yangpu |rowspan=7|Underground Island |- |style="text-align:center;"|●||style="text-align:center;"|● |{{stl|SHM|Yangshupu Road}} |{{large|{{lang|zh-cn|杨树浦路}}}} | |0.72 |17.59 |32 |- |style="text-align:center;"|●||style="text-align:center;"|● |{{stl|SHM|Pudong Avenue}} |{{large|{{lang|zh-cn|浦东大道}}}} |{{rint|shanghai|14}} |1.44 |19.03 |35 |rowspan=5|Pudong |- |style="text-align:center;"|●||style="text-align:center;"|● |{{stl|SHM|Century Avenue}} |{{large|{{lang|zh-cn|世纪大道}}}} |{{rint|shanghai|2}} {{rint|shanghai|6}} {{rint|shanghai|9}} |1.43 |20.46 |37 |- |style="text-align:center;"|●||style="text-align:center;"|● |{{stl|SHM|Xiangcheng Road}}{{efn-lr|Formerly named Pudian Road station (浦电路站)}} |{{large|{{lang|zh-cn|向城路}}}} | |0.85 |21.31 |39 |- |style="text-align:center;"|●||style="text-align:center;"|● |{{stl|SHM|Lancun Road}} |{{large|{{lang|zh-cn|蓝村路}}}} |{{rint|shanghai|6}} |1.34 |22.65 |41 |- |style="text-align:center;"|●||style="text-align:center;"|● |{{stl|SHM|Tangqiao}} |{{large|{{lang|zh-cn|塘桥}}}} | |1.21 |23.86 |44 |rowspan=4|29 Dec 2007<ref>{{cite web|url=http://news.sina.com.cn/o/2007-12-24/005313135562s.shtml|script-title=zh:上海轨交4号线29日环通|date=2007-12-24|publisher=Sina}}</ref> |- |style="text-align:center;"|●||style="text-align:center;"|● |{{stl|SHM|Nanpu Bridge}} |{{large|{{lang|zh-cn|南浦大桥}}}} | |2.13 |25.99 |47 |rowspan=3|Huangpu |Underground Split |- |style="text-align:center;"|●||style="text-align:center;"|● |{{stl|SHM|South Xizang Road}} |{{large|{{lang|zh-cn|西藏南路}}}} |{{rint|shanghai|8}} |1.22 |27.21 |49 |rowspan=6|Underground Island |- |style="text-align:center;"|●||style="text-align:center;"|● |{{stl|SHM|Luban Road}} |{{large|{{lang|zh-cn|鲁班路}}}} | |1.47 |28.68 |51 |- |style="text-align:center;"|●||style="text-align:center;"|● |{{stl|SHM|Damuqiao Road}} |{{large|{{lang|zh-cn|大木桥路}}}} |{{rint|shanghai|12}} |1.19 |29.87 |53 |rowspan=4|Xuhui |rowspan=4|31 Dec 2005<ref name="Line4" /> |- |style="text-align:center;"|●||style="text-align:center;"|● |{{stl|SHM|Dong'an Road}} |{{large|{{lang|zh-cn|东安路}}}} |{{rint|shanghai|7}} |0.62 |30.49 |55 |- |style="text-align:center;"|●||style="text-align:center;"|● |{{stl|SHM|Shanghai Stadium}} |{{large|{{lang|zh-cn|上海体育场}}}} | |1.51 |32.00 |57 |- |style="text-align:center;"|●||style="text-align:center;"|● |{{stl|SHM|Shanghai Indoor Stadium}} |{{large|{{lang|zh-cn|上海体育馆}}}} |{{rint|shanghai|1}} |0.67 |32.67 |59 |- style = "background:#{{rcr|SHM|4}}; height: 2pt" | colspan = "12" | |- bgcolor="lightgrey" | style="font-size:85%" colspan="6" style="text-align:center;"| — ↓ Loop line towards Yishan Road (Inner Loop) ↓ — |1.14 |33.81 |62 |colspan = "3" | |- style = "background:#{{rcr|SHM|4}}; height: 2pt" | colspan = "12" | |- | colspan = "12" |{{notelist-lr}} |- style = "background: #{{rcr|SHM|4}}; height: 2pt;" | colspan = "12" | |} </onlyinclude> {{Clear}}

===Important stations=== *{{stl|SHM|Shanghai Railway Station}}: Interchange with line 3. To transfer to line 1, passengers need to exit through a tunnel inside Shanghai railway station and purchase a ticket to re-enter the station. *{{stl|SHM|Zhongshan Park}}: Interchange with lines 2 and 3. *{{stl|SHM|Century Avenue}}: Interchange with lines 2, 6 and 9. It is Shanghai's first 4-line interchange station. *{{stl|SHM|South Xizang Road}}: The first platform-to-platform interchange station in the Shanghai Metro network. Interchange with line 8. *{{stl|SHM|Shanghai Stadium}}: Serves Shanghai Stadium. *{{stl|SHM|Shanghai Indoor Stadium}}: Serves the sports stadium of the same name and the biggest regional and interregional bus station in the city. Interchange with line 1. *{{stl|SHM|Jinshajiang Road}}: Serves East China Normal University. Interchange with lines 3 and 13. *{{stl|SHM|West Yan'an Road}}: Serves Donghua University.

===Station name change=== * On 28 October 2006, Dongfang Road was renamed as the {{stl|SHM|Century Avenue}} after station renovation for line 2 and the opening of line 4.

== Headways == <onlyinclude> <onlyinclude> <onlyinclude> <onlyinclude> <onlyinclude> <onlyinclude> <onlyinclude> <onlyinclude> <onlyinclude> <onlyinclude> <onlyinclude> <onlyinclude> <onlyinclude> {|border=0 style="border:1px solid #999;background-color:white;text-align:left;font-size:90%" class="mw-collapsible" <onlyinclude>! colspan="4" style="text-align: center" bgcolor=#{{rcr|SHM|4}} | {{font color | white|Shanghai Metro Line 4 headway<ref>{{cite web|url=http://service.shmetro.com/hcskb/index.htm|title=Schedule|date=2021-07-07|publisher=Shanghai Metro|language=zh|access-date=2021-07-07|archive-date=2017-11-13|archive-url=https://web.archive.org/web/20171113100804/http://service.shmetro.com/hcskb/index.htm|url-status=dead}}</ref>}} |-bgcolor=#{{rcr|SHM|4}} | colspan=2| {{ font color | white|Time}}||{{ font color | white|Inner Loop (running clockwise)}} || {{ font color | white|Outer Loop (running counterclockwise)}} |-bgcolor=#cccccc ! colspan=4 align=center|Monday - Friday (Working Days) |- |{{nowrap|AM peak}}||7:00–9:00|| {| |- |{{stl|SHM|Linping Road}} → {{stl|SHM|Century Avenue}} → {{stl|SHM|Yishan Road}}: |- |About 3 min and 10 sec |- |{{stl|SHM|Yishan Road}} → shared track w/ {{rint|shanghai|3}} → {{stl|SHM|Linping Road}}: |- |About 3 min and 45 sec |} | {| |- |{{stl|SHM|Yishan Road}} - {{stl|SHM|Century Avenue}} - {{stl|SHM|Dalian Road}}: |- |About 5 min and 30 min; |- |{{stl|SHM|Dalian Road}} - shared track w/ {{rint|shanghai|3}} - {{stl|SHM|Yishan Road}}: |- |About 7 min and 30 sec |} |-bgcolor=#EFEFEF |Off-peak||9:00–17:00|| colspan=2 align=center|About 8 min |- |PM peak||17:00–19:30|| colspan=2 align=center|About 5 min |-bgcolor=#EFEFEF |Other hours|| {| |- |Before 7:00 |- |After 19:30 |} | colspan=2 align=center|About 5 - 12 min |-bgcolor=#cccccc ! colspan=4 align=center|Saturday and Sunday (Weekends) |- |Peak||7:00–21:00|| colspan=2 align=center|About 6 min and 30 sec |-bgcolor=#EFEFEF |Other hours|| {| |- |{{nowrap|Before 7:00}} |- |After 21:00 |} | colspan=2 align=center|About 5 - 12 min |- style= "background:#{{rcr|SHM|4}}; height: 2pt" | colspan = "4" |</onlyinclude> |}

==Technology== ===Signaling=== Line 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 and finish before December 31, 2024.<ref>[https://www.shine.cn/news/metro/2106281247/ Blueprint to bring Shanghai's New Cities closer]</ref> 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 using Qiji TACS system.<ref>[https://www.casco.com.cn/news/detail.aspx?id=4042 CASCO Qiji™ TACS is on the stage, Shanghai Line 3/4 will start to upgrade the signal system!]</ref>

===Rolling Stock=== The line operates with 6-car Class A trains.{{efn-lr|name=ClassA|Class A carriage: 21-24m in length, 3.0m in width and 3.8m in height; Capacity: about 310 people.}} {| class="mw-collapsible sortable" border="0" style="border:1px solid #999;background-color:white;text-align:left;font-size:90%" ! colspan="9" style="text-align: center" bgcolor="#{{rcr|SHM|4}}" | {{font color | white|Shanghai Metro Line 4 rolling stock}} |- bgcolor="#cccccc" ! Fleet numbers || Manufacturer || Time of manufacturing || Class || No of car || class="unsortable" | Assembly{{efn-lr|Tc: Trailer with cab; Mp: EMU with pantograph; M: EMU without pantograph.}} || Rolling stock || Number || class="unsortable" | Notes <onlyinclude> |- bgcolor="#be99e7" | 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)<includeonly>|| '''Line 4'''</includeonly>|| <ref>{{Cite web|url=https://www.crrcgc.cc/zj/g1573/s4142/t61520.aspx|script-title=zh:上海市明珠二期轨道交通车辆|language=zh|date=2013-11-24|access-date=2020-03-20|archive-date=2020-03-20|archive-url=https://web.archive.org/web/20200320084323/https://www.crrcgc.cc/zj/g1573/s4142/t61520.aspx|url-status=dead}}</ref> Original name: AC05. In February 2009, 8 trains used on line 2 (numbers: 0225-0232) returned to line 4. |- bgcolor="#deccf3" | 162 || SATCO{{efn-lr|name=SATCO|SATCO (Shanghai Alstom Transportation Equipment Co., Ltd.) is a joint venture between Alstom Metropolis and Shanghai Electric.}} (0430–0455) CRRC Changchun Railway Vehicles Co., Ltd. (0429) || 2014-2017 || A || 6 || Tc+Mp+M+M+Mp+Tc || 04A02 || 0429-0455 (041691-043301)<includeonly>|| '''Line 4'''</includeonly>|| 13 trains (042171-042941, trainset 0437-0449) have been assigned to line 3.</onlyinclude> |- style="background:#{{rcr|SHM|4}}; height: 2pt" | colspan="9" | |- | colspan="7" |{{notelist-lr}} |- style="background: #{{rcr|SHM|4}}; height: 2pt;" | colspan="9" | |}

<gallery mode="packed"> File:Shanghai Metro AC05 Train near Baoshan Road Station.jpg|04A01 train File:CNR-Alstom Line4.JPG|04A02 train </gallery>

==References== {{Reflist}}

{{DEFAULTSORT:Shanghai Metro, Line 4}} Category:Shanghai Metro lines Category:Railway loop lines Category:Line 4 (Shanghai Metro) Category:Railway lines opened in 2005 Category:2005 establishments in Shanghai Category:1500 V DC railway electrification