Line 4 or 4 Line may refer to:

Public transport

Asia

Line 4 (Chennai Metro) The Orange Line or Line 4 is one of the three lines of Chennai Metro, Phase 2 Project . The under construction line stretches from to . The line will consist of 27 stations, out of which 9 are underground and 18 are elevated. Phase II E. ...

, or Orange Line, under construction in India *

Busan Metro Line 4 Busan Metro Line 4 () is a rubber-tyred metro line of the Busan Metro network that connects part of Gijang-gun, Busan, and upper Haeundae-gu, Busan, into Dongnae-gu, Busan Korea. It is operated by the Busan Transportation Corporation. Opened on ...

, a rubber-tyred metro line in Busan, South Korea *

Kolkata Metro Line 4 The Kolkata Metro Line 4 or the Yellow Line, also known as the Noapara - Barasat Line of the Kolkata Metro in India is a long metro route from Noapara to Barasat in North 24 Parganas, which is under construction. It is being built by RVNL. It ...

or Noapara Barasat Line, under construction in India * Manila Light Rail Transit System Line 4, Metro Manila, Philippines *

Line 4 (Mumbai Metro) Green Line 4 of the Mumbai Metro, currently under construction, is part of the metro system for the city of Mumbai, India and is being developed by MMRDA and a consortium of international companies. The line is planned to be fully elevated, an ...

, under early stages of construction * Line 4 (Osaka) or Chūō Line, in Japan *

Seoul Subway Line 4 Seoul Metropolitan Subway Line 4 (dubbed ''The Blue Line'') of the Seoul Metropolitan Subway is a long line crossing from the southwest to the northeast across the Seoul National Capital Area. The central section in Seoul City is operated by Se ...

, a line across the National Capital Area, South Korea *

Sri Petaling Line The LRT Ampang Line and the LRT Sri Petaling Line are medium-capacity light rapid transit (LRT) lines in the Klang Valley, Malaysia. The combined network comprises 45.1 kilometres of tracks (28.0 miles) with 36 stations and was the first ...

, the fourth rapid transit line in Klang Valley, Malaysia *

Zhonghe–Xinlu line The Zhonghe–Xinlu or Orange line (code O) is a metro line in Taipei operated by the Taipei Metro, named after the districts it connects: Zhonghe, Xinzhuang and Luzhou. The line starts at in Zhonghe, passes through central Taipei, then splits ...

, a metro line in Taipei, Taiwan

China

Line 4 (Beijing Subway) Line 4 of the Beijing Subway () is a subway line in Beijing's mass transit network. It entered into operation on 28 September 2009, and runs from north to south, parallel and to the west of Line 5, through Haidian, Xicheng, and Fengtai Di ...

, a metro line in Beijing *

Line 4 (Changchun Subway) Line 4 of the Changchun Rail Transit () is a grade separated light rail line in Changchun, running from north to south. Although it uses extended low floor LRVs, the line operates more like a metro, being entirely separate from traffic, simila ...

, a metro line in Changchun, Jilin *

Line 4 (Changsha Metro) Line 4 of the Changsha Metro () is a rapid transit line in Changsha Changsha (; ; ; Changshanese pronunciation: (), Standard Chinese, Standard Mandarin pronunciation: ) is the Capital city, capital and the largest city of Hunan Province o ...

, a metro line in Changsha, Hunan *

Line 4 (Chengdu Metro) Line 4 of the Chengdu Metro () is the third line to enter revenue service on the metro network in Chengdu, Sichuan. Line 4 runs in an east-west direction, stretching from Wansheng in Wenjiang Wenjiang District () is one of 11 urban districts of ...

, a metro line in Chengdu, Sichuan *

Line 4 (Chongqing Rail Transit) Line 4 of Chongqing Rail Transit is a rapid transit line in Chongqing Chongqing ( or ; ; Sichuanese dialects, Sichuanese pronunciation: , Standard Mandarin pronunciation: ), Postal Romanization, alternately romanized as Chungking (), ...

,a metro line in Chongqing *

Line 4 (Dongguan Rail Transit) Line 4 of the Dongguan Rail Transit () is a planned subway line in Dongguan, China. It has a planned 12 stations and its 'Y' shaped design means that it has 3 terminating stations: Huangjiang Center (interchange with Line 1), Qingxi Coach Termina ...

, a planned subway line *

Line 4 (Fuzhou Metro) Line 4 of the Fuzhou Metro () is a metro line in Fuzhou Fuzhou (; , Fuzhounese: Hokchew, ''Hók-ciŭ''), alternately romanized as Foochow, is the capital and one of the largest cities in Fujian province, China. Along with the many countie ...

, a line under construction *

Line 4 (Guangzhou Metro) Line 4 of the Guangzhou Metro is a south-north line on the system that runs between and stations, spanning a total of with 24 stations (while not yet in service). The sections of the line from Xinzao to Huangcun, Feishajiao to Nansha Passeng ...

, a metro line in Guangzhou, Guangdong *

Line 4 (Hangzhou Metro) Line 4 of the Hangzhou Metro () is a rapid transit line in Hangzhou. Description Phase 1 Phase 1 of the line started operation since 2015. Running northeast–southwest, the line connects Hangzhou East railway station, Qianjiang New City and Binj ...

, a metro line in Hangzhou, Zhejiang *

Line 4 (Nanjing Metro) Line 4 is an east-west line on the Nanjing Metro, running from to . It consists of 18 stations and spans a total of . The line color is purple, and it first opened on January 18, 2017. Opening timeline Station list Future plans The secon ...

, a metro line in Nanjing, Jiangsu *

Line 4 (Ningbo Rail Transit) Line 4 of Ningbo Rail Transit ( 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 Dongqian Lake in Yinzhou District.Ningbo Environment Protection Design Group. Report ...

, a rapid transit line in Ningbo, Zhejiang *

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, ...

, a metro line in Shanghai *

Line 4 (Shenzhen Metro) Line 4 of Shenzhen Metro, formerly branded as Longhua line, runs South–North from to . The line serves Futian District and Longhua District of Shenzhen. The line originally used 4-car trains, making it extremely crowded although it still car ...

, a metro line in Shenzhen, Guangdong *

Line 4 (Suzhou Rail Transit) Line 4 is a line of Suzhou Rail Transit. It runs in a north-south alignment from Longdaobang station in Xiangcheng District's the northern suburbs, to the canal town of Tongli Tongli, alternately Tong-Li (; Wu: Don li, ) is a town in Wuji ...

, a metro line in Suzhou, Jiangsu *

Line 4 (Wuhan Metro) The Line 4 of Wuhan Metro () is the third line in Wuhan Metro system, and it will be the second metro line crossing the Yangtze river in Wuhan. It is colored grass-green, which is the identifying color of this line, which would appear on its train ...

, a metro line in Wuhan, Hubei *

Line 4 (Wuxi Metro) Line 4 of the Wuxi Metro () is a rapid transit line in Wuxi Wuxi (, ) is a city in southern Jiangsu province, eastern China, by car to the northwest of downtown Shanghai, between Changzhou and Suzhou. In 2017 it had a population of 3,542,319 ...

, a line under construction *

Line 4 (Xi'an Metro) Line 4 of Xi'an Metro () is a metro line running from north to south, in Xi'an, Shaanxi Province, China. It was opened on 26 December 2018. The line is in length with 29 stations. The line is colored Tiffany Blue on system maps. Opening timeline ...

, a rapid transit line

Europe

Line 4 (Athens Metro) Line 4 of the Athens Metro is a future line that will run from Alsos Veikou to Goudi. Construction of the line started in mid to late-2021 and is scheduled to be completed in 2029 or 2030. Line 4 had been under consideration for many years. Its ex ...

, a proposed metro line in Greece *

Barcelona Metro line 4 Line 4, also known as Trinitat Nova – La Pau, usually called "línia groga" (yellow line), is a line in the Barcelona Metro network operated by TMB, and part of the ATM fare-integrated transport network. It serves the northern districts of t ...

, a line in Spain *

Rodalies Barcelona line 4 The R4 is a line of Rodalies de Catalunya's Barcelona commuter rail service, operated by Renfe Operadora. It runs northwards from the northern limits of the province of Tarragona to Barcelona, passing through the inland Alt Penedès region. The ...

, a commuter railway in Spain *

Line 4 (Metro Bilbao) The Bilbao metro ( es, Metro de Bilbao, eu, Bilboko metroa) is a rapid transit system serving the city of Bilbao and the region of Greater Bilbao. Lines 1 and 2 have a "Y" shape, as they transit both banks of the river Ibaizabal and then combi ...

, a proposed line *

Line 4 (Bucharest Metro) M4 is one of the five lines of the Bucharest Metro. It is currently long and runs from Gara de Nord to Străulești, following the Griviței and Bucureștii Noi avenues. History Construction of the line started in September 1989, shortly befor ...

, a line in Romania *

Line 4 (Budapest Metro) Line 4 (officially: South Buda–Rákospalota (DBR) Line, Metro 4 or M4, and unofficially: Green Line) is the fourth line of the Budapest Metro. It opened on 28 March 2014. The first section, 7.4 km in length and consisting of ten stations, ...

, a line in Hungary *

Line 4 (Madrid Metro) Line 4 is a rapid transit line of the Madrid Metro containing 23 stations. Originally opened in 1944, the line has been extended many times over the years and is now one of the busiest lines in the Madrid system. History Line 4 originally opened ...

, a line in Spain * Line 4 (Milan metro), an underground rapid transit line under construction in Italy * Line 4 (Moscow Metro), a metro line in Moscow, Russia *

Paris Métro Line 4 Line 4 () is one of the sixteen lines of the Paris Métro rapid transit system. Situated mostly within the boundaries of the City of Paris, it connects Porte de Clignancourt in the north and Bagneux-Lucie Aubrac in the south, travelling across ...

, a line in France *

Paris Tramway Line 4 Paris () is the capital and most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), making it the 30th most densely populated city in the world in 2020. Si ...

, a tram-train line just outside the limits of Paris proper *

Line 4 (Saint Petersburg Metro) Line 4 of the Saint Petersburg Metro, also known as ''Lakhtinsko-Pravoberezhnaya Line'' (russian: Ла́хтинско-Правобере́жная) or ''Orange Line'', is a rapid transit line in Saint Petersburg, Russia, which connects city cen ...

, a metro line in Saint Petersburg, Russia *

U4 (Vienna U-Bahn) Line U4 is a line on the Vienna U-Bahn metro Metro, short for metropolitan, may refer to: Geography * Metro (city), a city in Indonesia * A metropolitan area, the populated region including and surrounding an urban center Public transpo ...

, a line in Austria

Oceania

* Eastern Suburbs and Illawarra Line, coded T4, coloured navy, a train line in Sydney, New South Wales.

North America

Line 4 Sheppard Line 4 Sheppard is the newest and shortest subway line of the Toronto subway system, operated by the Toronto Transit Commission (TTC). It opened on November 22, 2002, and has five stations along of track, which is built without any open sectio ...

, a subway line in Toronto, Canada *

Yellow Line (Montreal Metro) The Yellow Line (french: Ligne jaune), formerly also known as Line 4 (french: Ligne 4), is one of the Montreal Metro's four routes operating in Montreal, Quebec, Canada. The line was popular when it opened for service because it connected Downtow ...

, formerly known as Line 4, in Canada *

Mexico City Metro Line 4 Mexico City Metro Line 4 is the fourth line of Mexico City Metro. The line color is aqua blue and it runs from north to south of the city crossing the city center by its easternmost area. In 2019 it had a total ridership of 29,013,032 passengers, ...

, a rapid transit line in Mexico City * Route 4 (Baltimore), a bus route in the United States *

No. 4 Line (Baltimore streetcar) Route 15 is a bus route operated by the Maryland Transit Administration in Baltimore and its suburbs. The line currently runs from Security Square Mall, Westview Mall, Windsor Hills, or Walbrook Junction (all in West Baltimore or Baltimore Count ...

, replaced by MTA Maryland Route 15 *

4 (New York City Subway service) The 4 Lexington Avenue Express is a rapid transit service in the A Division of the New York City Subway. Its route emblem, or "bullet", is colored since it uses the IRT Lexington Avenue Line in Manhattan. The 4 operates at all times. Daytime s ...

, a subway line in New York City * 4 (Los Angeles Railway), streetcar lines in Los Angeles

South America

* Line 4 (Rio de Janeiro), a line under construction in Brazil *

Line 4 (São Paulo Metro) Line 4 (Yellow) ( pt, Linha 4–Amarela) is one of the six lines that make up the São Paulo Metro and one of the thirteen lines that make up the São Paulo Metropolitan Rail Transportation Network. Originally called Southeast-Southwest Line, the ...

, a line under construction in Brazil *

Santiago Metro Line 4 Santiago Metro Line 4 is one of the six lines that currently make up the Santiago Metro network in Santiago, Chile. It has 23 stations and 23.9 km of track. The line intersects with Santiago Metro Line 1, Line 1 at Tobalaba metro station, Tob ...

, in Chile *

Santiago Metro Line 4A Santiago Metro Line 4A is one of the seven lines that currently make up the Santiago Metro network in Santiago, Chile. It has six stations and 7.7 km of track. The line intersects with Line 2 at La Cisterna, and with Line 4 at Vicuña Mac ...

, in Chile

Measurement

*4-line, obsolete measure in

Line Line most often refers to: * Line (geometry), object with zero thickness and curvature that stretches to infinity * Telephone line, a single-user circuit on a telephone communication system Line, lines, The Line, or LINE may also refer to: Arts ...

*4-line, 12.17x44mm ammunition or a rifle which fires it