Line 4 (Ningbo Rail Transit)

{{Short description|Metro line in Ningbo, China}}

{{Infobox rail line

| name =

| logo = NBRT Line 4 icon.svg

| logo_width = 80px

| color = {{rcr|NingboRT|4}}

| image = Line 4, NBRT, 2020-12-26 01.jpg

| image_width = 300px

| image_alt =

| caption = Line 4 Train at Guanshanhe Station

| type = Rapid transit

| system = Ningbo Rail Transit

| status = Operational

| locale = Ningbo, Zhejiang, China

| start = {{stl|NingboRT|Cicheng West}}

| end = {{stl|NingboRT|International Conference Center}}

| stations = 27

| routes =

| daily_ridership =

| open = {{Start date and age|2020|12|23|df=yes}}

| close =

| owner = Ningbo

| operator = Ningbo Rail Transit Co., Ltd.

| character = Underground / Elevated

| depot =

| stock =

| linelength = {{convert|39.73|km|mi|2|abbr=on}}

| tracklength =

| tracks = 2

| gauge = {{track gauge|sg|allk=on}}

| electrification = {{1,500 V DC}} overhead catenary (+ third rail return)

| speed =

| elevation =

| website =

| map =

| map_state = collapsed

}}

Line 4 of Ningbo Rail Transit ({{lang-zh|s=宁波轨道交通4号线}}) is a rapid transit line in Ningbo. It starts from Cicheng Town, Jiangbei District, and ends near Ningbo International Conference Center in Yinzhou District.Ningbo Environment Protection Design Group. Report of Environment Impact of Line 4, Ningbo Rail Transit. Ningbo. November 2014. The project was approved on November 5, 2013{{Cite web|url=http://www.nbdpc.gov.cn/cat/cat122/con_122_32409.html|archive-url=https://web.archive.org/web/20131109124347/http://www.nbdpc.gov.cn/cat/cat122/con_122_32409.html|url-status=dead|archive-date=2013-11-09|title=《宁波市城市轨道交通近期建设规划（2013-2020年）》获国家批复|date=2013-11-09|access-date=2018-01-19}} and opened on December 23, 2020. Construction of Line 4 started in 2011 with the groundbreaking of the North Ring Elevated Expressway with the second deck of the structure being used for Line 4 trains.{{Cite web|url=http://news.cnnb.com.cn/system/2012/10/03/007479943.shtml|title=宁波北外环快速路高架上开建轨道交通-北外环,宁波,快速路,轨道交通-中国宁波网-新闻中心|website=news.cnnb.com.cn|access-date=2018-01-19}} The rest of the line started construction on November 30, 2015.{{Cite web|url=http://news.cnnb.com.cn/system/2015/11/30/008436394.shtml|title=又一条地铁来了！宁波轨交4号线今开工 工期5年_中国宁波网_特别推荐|website=news.cnnb.com.cn|access-date=2018-01-19}} The line will initially use 36 sets of six car B-type trains with a maximum service speed of {{Cvt|80|km/h}}.{{Cite web|url=http://www.nbdpc.gov.cn/cat/cat85/con_85_33132.html|archive-url=https://web.archive.org/web/20140201201042/http://www.nbdpc.gov.cn/cat/cat85/con_85_33132.html|url-status=dead|archive-date=2014-02-01|title=宁波市轨道交通4号线工程设计总体总包（SJ4001标段）（勘察设计）招标公告|date=2014-02-01|access-date=2018-01-19}}{{Cite news|url=http://www.bidding.gov.cn/gcjszbgg/117788.htm|archive-url=https://archive.today/20170611165029/http://www.bidding.gov.cn/gcjszbgg/117788.htm|url-status=dead|archive-date=2017-06-11|title=宁波市公共资源交易中心|date=2017-06-11|work=archive.is|access-date=2018-01-19}}