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| Years in rail transport |
| Timeline of railway history |
This article lists events related to rail transport that occurred in 2023.
January 2– Line M7 of the Istanbul Metro extends from Mecidiyeköy to Yıldız. [1] January 6– Line M8 of the Istanbul Metro opens between Bostancı and Parseller. [2] 
January 7– Line T Third Street of the San Francisco Muni Metro rerouted via the Central Subway to Chinatown station. [3] 
– Beijing Subway introduces through service between Line 9 and the Fangshan Line. [4] – Chongqing Rail Transit: Line 9 extends from Xingke Ave to Huashigou and Line 10 extends from Liyuchi to Houbao. [5] 
January 19– Mumbai Metro: Line 2 extends from Dahanukarwadi to DN Nagar and Line 7 extends from Aarey to Gundavali. [6] January 22– Line M11 of the Istanbul Metro opens between Kağıthane and Kargo Terminali. [7] 
January 23– Metro Express: Service extends from Port Louis Victoria to Place d'Armes and Rèduit branch opens. [8] January 25– MTA Long Island Rail Road opens shuttle service between Jamaica and Grand Central Madison via the East Side Access. [9] February 4– Changping Line of the Beijing Subway extends from Qinghe railway station to Xitucheng. [10] 
February 8– Line 2 of the Shiraz Metro opens between Qahramanan and Imam Hossein. [11] 
February 10– Ankeng light rail of the New Taipei Metro opens between Shuangcheng and Shisizhang. [12] 
February 18– Mostaganem tramway : Line 1 opens between La Salamandre and Karouba and Line 2 opens between Gare de Mostaganem SNTF and Nouvelle Gare Routière. [13] – Line 5 of Chongqing Rail Transit extends from The Expo Garden Center to Yuegangbeilu. [14] – Line 2 of the Karaj Metro opens between Golshahr 45-metre and Ayatollah Taleghani. [15] – MTA Long Island Rail Road begins full service to Grand Central Madison via the East Side Access. [16] 
March 1– Bolshaya Koltsevaya Line of the Moscow Metro extends from Kashirskaya to Nizhegorodskaya and from Elektrozavodskaya to Savyolovskaya. [17] 
– Luton DART opens between Luton Airport and Luton Airport Parkway. [18] – R211A cars enter passenger service on the A line of the MTA New York City Subway. [19] 
– MRT Putrajaya Line extends from Kampung Batu to Putrajaya Sentral. [20] 
– Line 2 of the Panama Metro extends via a branch from Corredor Sur to Aeropuerto. [21] March 17 – Line 5 of the Dalian Metro opens between Hutan Xinqu and Houguan. [22] – Tehran Metro: Line 6 extends from Tarbiat Modares University to Imam Hossein and Line 7 extends from Meydan-e San'at to Shahid Dadman. [23] 
– Eastern Kanagawa Rail Link: Tōkyū Shin-yokohama Line opens between Shin-yokohama and Hiyoshi and Sōtetsu Shin-yokohama Line extends from Hazawa yokohama-kokudai to Shin-yokohama. [24] – Umeda Freight Line switches to a new underground alignment to serve an expanded Ōsaka Station. [25] March 26 – Purple Line of the Namma Metro extends via a disconnected branch from Krishnarajapura to Whitefield (Kadugodi). [26] – Nanakuma Line of the Fukuoka City Subway extends from Tenjin-Minami to Hakata. [27] 
– Málaga Metro: Line 1 extends from El Perchel to Atarazanas and Line 2 extends from El Perchel to Guadalmedina. [28] 
March 31 – Line B of the Rotterdam Metro extends from Hoek van Holland Haven to Hoek van Holland Strand. [29] April 1– Rumoi Main Line closes between Ishikari-Numata and Rumoi. [30] April 7– Jinyidong Line of the Jinhua Rail Transit extends from Sports Center to Ming & Qing Dynasty Palaces. [31] April 8– Line M3 of the Istanbul Metro extends from Başakşehir MetroKent to Kayaşehir Merkez. [32] April 11– Vitoria-Gasteiz tram network extends from Florida to Salburua. [33] April 12– Line M4 of the Ankara Metro extends from Atatürk Kültür Merkezi to Kızılay. [34] 
April 13– Cross-border passenger service begins between Kunming and Vientiane via the Kunming-Yuxi, Yuxi-Mohan, and Boten-Vientiane rail corridors. [35] 
April 14– Canadian Pacific and Kansas City Southern merge to form CPKC. [36] April 20– Akçaray tram extends from Plajyolu to Kuruçeşme. [37] 
April 25– Circle Line of the Tashkent Metro extends from Qoʻyliq to Kuruvchilar. [38] April 26– Ankara–Sivas high speed railway opens for commercial operation. [39] 
April 29 – Line A of the Bordeaux tram network extends via a branch from Quatre Chemins to Aéroport de Bordeaux-Mérignac. [40] May 1 – Line 4 of the Tehran Metro extends from Eram-e Sabz to Allameh Ja'fari. [41] 
May 2 – Line 1 of the Quito Metro opens for partial commercial operation between El Labrador and Quitumbe. [42] May 9 – Changsha Dawangshan SkyShuttle opens between Shantang and Guanyingang. [43] May 11 – Line 1 of the Quito Metro ends service a week after opening. [44] May 28 – TransPennine Trains takes over the TransPennine franchise from TransPennine Express. [45] – TEDA Modern Guided Rail Tram ends service. [46] – Zhangjiang Tram ends service. [47] June 6 – Line 4 of the Changchun Rail Transit extends from Tiangong Road to Tianxin Road. [48] June 7– Edinburgh Trams extends from St Andrew Square, Edinburgh to Newhaven. [49] 
June 11 – Commercial service opens between Montreux and Interlaken Ost. [50] June 16– Los Angeles Metro Rail: A Line extends from 7th Street/Metro Center to APU/Citrus College via the Regional Connector, E Line extends from 7th Street/Metro Center to Atlantic via the Regional Connector, and L Line ends service. [51] 
June 19– MRT Yellow Line opens between Lat Phrao and Samrong. [52] – Line 11 of the Suzhou Rail Transit opens between Weiting and Huaqiao. [53] – Line 10 of the Île-de-France tram network opens between La Croix de Berny and Jardin Parisien. [54] June 27– Xi'an Metro: Line 2 extends from Xi'an Beizhan to Caotan and from Weiqunan to Changninggong and Line 16 opens between Qinchuangyuanzhongxin and Shijingli. [55] – Xihuan Line, a southern extension of Line 3 of the Changsha Metro, opens between Shantang and Xiangtan North railway station. [56] – Line S4 of the Nanjing Metro opens between Chahe and Chuzhou Railway Station. [57] June 29– Line 2 of the Lanzhou Metro opens between Yanbai Bridge and Dongfanghong Square. [58] June 30– Skyline opens in Oahu between Kualakaʻi and Hālawa. [59] 
– Seohae Line of the Seoul Metropolitan Subway extends from Sosa to Daegok. [60] – Line 1 of the Hefei Metro extends from Hefei Railway Station to Zhangwa. [61] 
July 4– Line 4 of the Milan Metro extends from Dateo to San Babila. [62] July 8– Angers tramway: Line B opens between Belle-Beille Campus and Monplaisir and Line C opens between Belle-Beille Campus and Angers Roseraie. [63] 
July 20– LRTA 13000 class cars enter passenger service on Line 1 of the Manila Light Rail Transit System. [64] July 24– Line 3 Scarborough of the Toronto Subway ends service. [65] July 26– Line 2 of the Shaoxing Metro opens from Jinghu Hospital to Tandu. [66] – First phase of the Réseau express métropolitain opens in Greater Montreal between Brossard and Central Station. [67] – Airport MRT Line of the Taoyuan Metro extends from Huanbei to Laojie River. [68] August 1– Pune Metro: Purple Line extends from Phugewadi to Civil Court and Aqua Line extends from Garware College to Ruby Hall Clinic. [69] 
August 7– Line 3 of the Tampere light rail network extends from Pyynikintori to Santalahti. [70] August 17– Line D3 of the Moscow Central Diameters opens from Zelenograd-Kryukovo to Ippodrom. [71] 
August 18 – Red Line of the Tel Aviv Light Rail opens between HaKomemiyut and Kiryat Arye and between HaKomemiyut and Petah Tikva. [72] – Line S2 of Wenzhou Rail Transit opens between Dongshan and Qingdong Road. [73] – Utsunomiya Light Rail opens between Utsunomiya Station East and Haga Takanezawa Industrial Park. [74] August 27 – Fuzhou Metro: Line 4 opens between Fenghuangchi and Difengjiang and Line 5 extends from Ancient Luozhou Town and Fuzhou South Railway Station. [75] 
August 28– Jabodebek LRT: Cibubur Line opens between Harjamukti and Dukuh Atas and Bekasi Line opens between Jatimulya and Dukuh Atas. [76] August 30– Line T5 of the Istanbul Tram extends from Cibali to Eminönü. [77] 
September 4– Blue Line of the Lagos Rail Mass Transit opens for limited commercial operation between Mile 2 and Marina. [78] September 6– Solntsevskaya Line of the Moscow Metro extends from Rasskazovka to Aeroport Vnukovo. [79] September 7– Lyublinsko-Dmitrovskaya Line of the Moscow Metro extends from Seligerskaya to Fiztekh. [80] September 8– Line 3 of the Zhengzhou Metro extends between Yinggang and Binhe Xincheng Nan. [81] September 9– Line D4 of the Moscow Central Diameters opens from Zheleznodorozhnaya to Aprelevka. [82] September 15 – El Insurgente commuter rail opens from Zinacantepec to Lerma. [83] September 16– T Line of the Link light rail system extends from Theater District to St. Joseph. [84] – Airport Express Line of the Delhi Metro extends from Dwarka Sector 21 to Yashobhoomi Dwarka Sector 25. [85] – Line 1 of the West Midlands Metro extends from The Royal to Wolverhampton. [86] September 18– Line Z and Line K of the Tren Interoceánico resume freight service. [87] September 21– Line 1 of the Xi'an Metro extends from Fenghesenlingongyuan to Xianyangxizhan. [88] September 22– Brightline extends from West Palm Beach to Orlando International Airport. [89] 
September 25– Line 3 of the Santiago Metro extends from Los Libertadores to Plaza de Quilicura. [90] – Guangzhou–Shanwei high-speed railway opens. [91] – Optics Valley Sky Rail opens between Jiufengshan and Longquanshan. [92] – Fuzhou–Xiamen high-speed railway opens. [93] – Shanghai–Nanjing Riverside high-speed railway opens. [94] – Line 10 of the Zhengzhou Metro opens between Zhengzhou railway station and Zhengzhou West railway station. [95] – Line 3 of the Harbin Metro extends from Taipingqiao to Chinese-baroque Block. [96] – Shenyang Metro: Line 2 extends from Quanyunlu to Taoxianjichang and Line 4 opens between Zhengxinlu and Chuangxinlu. [97] October 2– Jakarta–Bandung high-speed railway opens. [98] October 4 – West Midlands to Manchester section of the High Speed 2 railway cancelled. [99] October 5 – Northern Line of Merseyrail extends from Kirkby to Headbolt Lane. [100] October 9– Purple Line of the Namma Metro extends from Kengeri to Challaghatta and connects Krishnarajapuram with Baiyappanahalli. [101] October 10– Tehran Metro: Line 6 extends from Shahid Sattari to Koushar and Line 7 extends from Shahid Dadman to Meydan-e Katab. [102] 
October 13– Lines 4 and 5 of the Prague tram network extend from Holyně to Slivenec. [103] October 20– Line B of the Lyon Metro extends from Gare d'Oullins to Saint-Genis-Laval Hôpitaux Sud. [104] – Jokeri light rail opens between Itäkeskus and Keilaniemi. [105] – Delhi–Meerut Regional Rapid Transit System opens initial section between Sahibabad and Duhai. [106] October 26– Line 13 of the Qingdao Metro extends from Jinggangshan Road to Jialingjiang West Road. [107] October 28– Line T4 of the Kayseray opens between Cumhuriyet Meydanı and İzzet Bayraktar Cami. [108] – Boughezoul–Laghouat railway opens. [109] – L-Line of Milwaukee's The Hop opens for limited commercial operation between Wisconsin Ave and Lakefront. [110] November 4– Valley Line of Edmonton Light Rail Transit opens between 102 Street and Mill Woods. [111] 
November 5– Line 6 of the Dhaka Metro Rail extends from Agargaon to Motijheel. [112] 
November 15– Line M2 of the Bucharest Metro extends from Berceni to Tudor Arghezi. [113] November 17– Line 1 of the Navi Mumbai Metro opens from CBD Belapur to Pendhar. [114] 
November 20– Transperth's Armadale and Thornlie lines close for the Victoria Park-Canning Level Crossing Removal Project. [115] November 21– MRT Pink Line opens for limited commercial operation between Nonthaburi Civic Center and Min Buri. [116] November 27– Line 2 of the Santiago Metro extends from La Cisterna to Hospital El Pino. [117] November 28– Line 19 of the Chengdu Metro extends from Jiujiang North to Tianfu Station. [118] – Chongqing Rail Transit: Line 5 connects Dashiba with Shiqiaopu and Line 10 extends from Houbao to Lanhualu. [119] – Line 1 of the Tehran Metro extends via the Imam Khomeini Airport Branch from Forudgahi-e Imam Khomeini to Shahr-e Parand. [120] – Line 5 of the Wuhan Metro extends from Hubei University of Chinese Medicine to Hongxia. [121] – Line 1 of the Quito Metro opens between El Labrador and Quitumbe. [122] December 4– Line V of Transilien opens between Massy-Palaiseau and Versailles-Chantiers to replace newly discontinued RER C service. [123] 
December 8– Taipa Line of the Macau Light Rapid Transit extends from Ocean to Barra. [124] December 9– RER C ends service between Savigny-sur-Orge and Massy-Palaiseau. [125] – Line T12 of the Île-de-France tramway network opens between Évry-Courcouronnes to Massy-Palaiseau. [126] 
– Line 13 of the Hannover Stadtbahn opens between Wallensteinstraße and Hemmingen. [127] – Line 15 of the Geneva tramway network extends from Palettes to ZIPLO. [128] December 15– Tren Maya opens between Cancún and San Francisco de Campeche. [129] – Line 3 of the Guiyang Metro opens between Luowan and Tongmuling. [130] – Line 1 of the Seoul Metropolitan Subway extends from Soyosan to Yeoncheon. [131] December 17– Line 16 of the Mannheim/Ludwigshafen tramway network opens between Bensheimer and Sullivan. [132] – Line 12 of the Zhengzhou Metro opens between Longzihu Dong and Lianghu. [133] 
– Dnipro City Express opens between Dnipro and Kamianske. [134] 
December 21– Line 2 of the Lima Metro opens between Evitamiento and Mercado Santa Anita. [135] – Line Z of the Tren Interoceánico opens for commercial operation between Salina Cruz and Coatzacoalcos. [136] 
– Line 25 of the Silesian Interurbans extends from Dąb Huta Baildon to Katowice Dąbrowki. [137] December 23– Suzhou Rail Transit introduces through service between Line 3 and Line 11. [138] 
– Line 1 of the Salvador Metro extends from Campinas to Águas Claras. [139] – Line 3 of the Harbin Metro extends from Chinese-baroque Block to Beima Road. [140] – Hefei Metro: Line 2 extends from Sanshibu to Cuozhen and Line 3 extends from Xingfuba to Sheng Ertong Yiyuan Xinqu. [141] – Line 2 of Nantong Rail Transit opens between Xingfu and Xianfeng. [142] – Line 8 of the Shenzhen Metro extends from Yantian Road to Xiaomeisha. [143] – PNR South Main Line reopens between Naga and Legazpi. [144] – Line 18 of Chongqing Rail Transit opens between Fuhualu and Tiaodengnan. [145] – Guangzhou Metro: Line 5 extends from Wenchong to Huangpu New Port and Line 7 extends from Higher Education Mega Center South to Yanshan. [146] – Line 7 of the Nanjing Metro extends via a disconnected branch from Yingtiandajie to Xishanqiao. [147] – Line 11 of the Tianjin Metro opens between Dongjiangdao and Dongliliujinglu. [148] – Zhengxu Line of the Zhengzhou Metro opens between Chang'anlubei and Xuchangdong Railway Station. [149] – Beijing Subway: Line 11 extends from Jin'anqiao to Moshikou, Line 16 extends from Yushuzhuang to Wanpingcheng, and Line 17 extends via a disconnected branch from Future Science City North to Workers' Stadium. [150] – Line 19 of the Wuhan Metro opens between West Square of Wuhan Railway Station and Xinyuexi Park. [151] – Line 4 of the Olsztyn tramway network opens between Dworzec Głowny and Pieczewo. [152] December 31– Tren Maya extends from San Francisco de Campeche to Palenque. [153] 
The Chengdu Metro is the rapid transit system of Chengdu, the capital of Sichuan, China. With the opening of Line 1 on 27 September 2010, the system consists of 13 subway lines and 1 light rail line. It has subsequently undergone rapid expansion. Since the opening of Lines 6, 8, 9, and 17 on 18 December 2020, the Chengdu Metro is the 4th longest metro system in the world.
Urban rail transit in China encompasses a broad range of urban and suburban electric passenger rail mass transit systems including subway, light rail, tram and maglev. Some classifications also include non-rail bus rapid transport. As of 31 December 2023, China has the world's longest urban rail transit system with more than 10,000 km (6,200 mi) of urban rail nationwide in 49 systems in 47 cities, accounting for 9 of the 10 longest metro systems, with the exceptions of the Moscow Metro or metro systems in Seoul combined if metro systems in the same cities are merged in the rank.
The Shenyang Metro is a rapid transit system serving the city of Shenyang, Liaoning, China. It's the seventh operational subway system in Mainland China and the first in Northeast China.
Changchun Rail Transit, is the rapid transit and light rail system in the city of Changchun, Jilin Province, China. Its first line, Line 3, is the first true light rail line in Mainland China. The system consists of three light rail lines and three rapid transit lines.
The Xi'an Metro, also known as the Xi'an Rail Transit, is a rapid transit system in the city of Xi'an and the neighbouring city of Xianyang, in Shaanxi province, China.
Line 11 is a northwest–southeast line of the Shanghai Metro network. Since October 2013, Line 11 serves Kunshan city, making it is the second intercity metro in China after the Guangfo Metro and the first that crosses a provincial boundary. With a single-line mileage of 82.386 kilometres (51.192 mi), it is the second-longest single-line subway line in China, after Line 6 in Chongqing, which is 85.6 km (53.2 mi) long. The line is colored brown on system maps.
Suzhou Rail Transit, also known as Suzhou Metro, is a rapid transit system serving the city of Suzhou, in Jiangsu Province, China. Line 1 began operation on April 28, 2012. Line 2 opened on December 28, 2013. A further three lines, and an extension of Line 2, were completed between 2016 and 2021. Line 11 connecting Kunshan city which is under Suzhou's administration, and beyond to the Shanghai Metro was completed on June 24, 2023.
Zhengzhou Metro is a rapid transit rail network serving urban and suburban districts of Zhengzhou, the capital city of Henan province. It is operated by the state owned Zhengzhou Metro Group. As of December 2023, the network has 11 operational lines, with a network length of 344 km (213.8 mi) and 217 stations. Opened on 28 December 2013, it is the first metro system in Henan province, and 18th in mainland China.
The Harbin Metro is the rapid transit system of Harbin, the provincial capital of Heilongjiang Province in northeastern China.́ The system began operation on 26 September 2013 with the opening of Line 1. The system has a total of three lines as of November 2021.
Hefei Rail Transit, also known as Hefei Metro, is a rapid transit system in Hefei, China.
Ningbo Rail Transit, also known as the Ningbo Metro, is a rapid transit system serving the city of Ningbo, Zhejiang and its suburbs. Six metro lines are being built inside the urban area of Ningbo, serving Haishu, Jiangbei, Zhenhai, Beilun and Yinzhou. The first phase of Line 1 started construction in June 2009 and began to service the public on May 30, 2014. Line 2 began service on September 26, 2015.
The Changsha Metro is a rapid transit system in Changsha, the capital city of Hunan province in China. The first operational line, Line 2, commenced service on April 29, 2014, making Changsha the 18th city in mainland China to open a rapid transit system.
The Guiyang Metro is a rapid transit system in the city of Guiyang, Guizhou province, China. It is operated and branded as Guiyang Urban Rail Transit (GYURT).
Nanchang Metro, officially Nanchang Rail Transit, is a rapid transit system in Nanchang, Jiangxi, China. As of 2021, four lines are operational. The Metro opened for commercial operation in December 2015. The network is currently 128.3 km (79.7 mi) in length with 4 lines. A total length of 163 km (101.3 mi) of network is planned, with Line 5 which is currently under planning.
Nanning Metro or Nanning Rail Transit (NNRT) is a rapid transit system in Nanning, the capital of Guangxi Zhuang Autonomous Region in China.
Lanzhou Metro or Lanzhou Rail Transit is a rapid transit system in Lanzhou, Gansu, China.
Line 18 of the Chengdu Metro is an express rapid transit line that connects the urban area of Chengdu with Chengdu Tianfu International Airport. Line 18's color is teal. The Phase 1 & 2 of Line 18 is in total 69.39 km in length. It is also the biggest PPP project in China. The section from South Railway Station to Tianfu International Airport North Station started operation on 18 December 2020.
Hongyancun station is a station on Line 9 of Chongqing Rail Transit in Chongqing Municipality, China, which opened in 2022. It is located in Yuzhong District. Line 5 will also reach the station once construction of the Central section is finished.
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