2023 in rail transport

January

 * 🇹🇷 January 2 – Line M7 of the Istanbul Metro extends from Mecidiyeköy to Yıldız.
 * 🇹🇷 January 6 – Line M8 of the Istanbul Metro opens between Bostancı and Parseller.
 * 🇺🇸 January 7 – Line T Third Street of the San Francisco Muni Metro rerouted via the Central Subway to Chinatown station.
 * January 18
 * 🇨🇳 – Beijing Subway introduces through service between Line 9 and the Fangshan Line.
 * 🇨🇳 – Chongqing Rail Transit: Line 9 extends from Xingke Ave to Huashigou and Line 10 extends from Liyuchi to Houbao.
 * 🇮🇳 January 19 – Mumbai Metro: Line 2 extends from Dahanukarwadi to DN Nagar and Line 7 extends from Aarey to Gundavali.
 * 🇹🇷 January 22 – Line M11 of the Istanbul Metro opens between Kağıthane and Kargo Terminali.
 * 🇲🇺 January 23 – Metro Express: Service extends from Port Louis Victoria to Place d'Armes and Rèduit branch opens.
 * 🇺🇸 January 25 – MTA Long Island Rail Road opens shuttle service between Jamaica and Grand Central Madison via the East Side Access.

February

 * 🇨🇳 February 4 – Changping Line of the Beijing Subway extends from Qinghe railway station to.
 * 🇮🇷 February 8 – Line 2 of the Shiraz Metro opens between Qahramanan and Imam Hossein.
 * 🇹🇼 February 10 – Ankeng light rail of the New Taipei Metro opens between Shuangcheng and Shisizhang.
 * 🇩🇿 February 18 – : Line 1 opens between La Salamandre and Karouba and Line 2 opens between Gare de Mostaganem SNTF and Nouvelle Gare Routière.
 * February 27
 * 🇨🇳 – Line 5 of Chongqing Rail Transit extends from to.
 * 🇮🇷 – Line 2 of the Karaj Metro opens between Golshahr 45-metre and Ayatollah Taleghani.
 * 🇺🇸 – MTA Long Island Rail Road begins full service to Grand Central Madison via the East Side Access.

March

 * 🇷🇺 March 1 – Bolshaya Koltsevaya Line of the Moscow Metro extends from Kashirskaya to Nizhegorodskaya and from Elektrozavodskaya to Savyolovskaya.
 * March 10
 * 🇬🇧 – Luton DART opens between Luton Airport and Luton Airport Parkway.
 * 🇺🇸 – R211A cars enter passenger service on the A line of the MTA New York City Subway.
 * March 16
 * 🇲🇾 – MRT Putrajaya Line extends from Kampung Batu to Putrajaya Sentral.
 * 🇵🇦 – Line 2 of the Panama Metro extends via a branch from Corredor Sur to Aeropuerto.
 * 🇨🇳 March 17 – Line 5 of the Dalian Metro opens between Hutan Xinqu and Houguan.
 * March 18
 * 🇮🇷 – Tehran Metro: extends from Tarbiat Modares University to Imam Hossein and  extends from Meydan-e San'at to Shahid Dadman.
 * 🇯🇵 – 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.
 * 🇯🇵 – Umeda Freight Line switches to a new underground alignment to serve an expanded Ōsaka Station.
 * 🇮🇳 March 26 – Purple Line of the Namma Metro extends via a disconnected branch from Krishnarajapura to Whitefield (Kadugodi).
 * March 27
 * 🇯🇵 – Nanakuma Line of the Fukuoka City Subway extends from Tenjin-Minami to Hakata.
 * 🇪🇸 – Málaga Metro: Line 1 extends from El Perchel to Atarazanas and Line 2 extends from El Perchel to Guadalmedina.
 * 🇳🇱 March 31 – Line B of the Rotterdam Metro extends from Hoek van Holland Haven to Hoek van Holland Strand.

April

 * 🇯🇵 April 1 – Rumoi Main Line closes between Ishikari-Numata and Rumoi.
 * 🇨🇳 April 7 – Jinyidong Line of the Jinhua Rail Transit extends from Sports Center to Ming & Qing Dynasty Palaces.
 * 🇹🇷 April 8 – Line M3 of the Istanbul Metro extends from Başakşehir MetroKent to Kayaşehir Merkez.
 * 🇪🇸 April 11 – Vitoria-Gasteiz tram network extends from Florida to Salburua.
 * 🇹🇷 April 12 – Line M4 of the Ankara Metro extends from Atatürk Kültür Merkezi to Kızılay.
 * 🇨🇳 April 13 – Cross-border passenger service begins between Kunming and Vientiane via the Kunming-Yuxi, Yuxi-Mohan, and Boten-Vientiane rail corridors.
 * 🇨🇦🇲🇽🇺🇸 April 14 – Canadian Pacific and Kansas City Southern merge to form CPKC.
 * 🇹🇷 April 20 – Akçaray tram extends from Plajyolu to Kuruçeşme.
 * 🇺🇿 April 25 – Circle Line of the Tashkent Metro extends from Qoʻyliq to Kuruvchilar.
 * 🇹🇷 April 26 – Ankara–Sivas high speed railway opens for commercial operation.
 * 🇫🇷 April 29 – Line A of the Bordeaux tram network extends via a branch from Quatre Chemins to Aéroport de Bordeaux-Mérignac.

May

 * 🇮🇷 May 1 – Line 4 of the Tehran Metro extends from Eram-e Sabz to Allameh Ja'fari.
 * 🇪🇨 May 2 – Line 1 of the Quito Metro opens for partial commercial operation between El Labrador and Quitumbe.
 * 🇨🇳 May 9 – opens between Shantang and Guanyingang.
 * 🇪🇨 May 11 – Line 1 of the Quito Metro ends service a week after opening.
 * 🇬🇧 May 28 – TransPennine Trains takes over the TransPennine franchise from TransPennine Express.

June

 * June 1
 * 🇨🇳 – TEDA Modern Guided Rail Tram ends service.
 * 🇨🇳 – Zhangjiang Tram ends service.
 * 🇨🇳 June 6 – Line 4 of the Changchun Rail Transit extends from Tiangong Road to Tianxin Road.
 * 🇬🇧 June 7 – Edinburgh Trams extends from St Andrew Square, Edinburgh to Newhaven.
 * 🇨🇭 June 11 – Commercial service opens between Montreux and Interlaken Ost.
 * 🇺🇸 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.
 * 🇹🇭 June 19 – MRT Yellow Line opens between Lat Phrao and Samrong.
 * June 24
 * 🇨🇳 – Line 11 of the Suzhou Rail Transit opens between Weiting and Huaqiao.
 * 🇫🇷 – Line 10 of the Île-de-France tram network opens between La Croix de Berny and Jardin Parisien.
 * 🇨🇳 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.
 * June 28
 * 🇨🇳 – Xihuan Line, a southern extension of Line 3 of the Changsha Metro, opens between Shantang and Xiangtan North railway station.
 * 🇨🇳 – Line S4 of the Nanjing Metro opens between Chahe and Chuzhou Railway Station.
 * 🇨🇳 June 29 – Line 2 of the Lanzhou Metro opens between Yanbai Bridge and Dongfanghong Square.
 * 🇺🇸 June 30 – Skyline opens in Oahu between Kualakaʻi and Hālawa.

July

 * July 1
 * 🇰🇷 – Seohae Line of the Seoul Metropolitan Subway extends from Sosa to Daegok.
 * 🇨🇳 – Line 1 of the Hefei Metro extends from Hefei Railway Station to Zhangwa.
 * 🇮🇹 July 4 – Line 4 of the Milan Metro extends from Dateo to San Babila.
 * 🇫🇷 July 8 – Angers tramway: Line B opens between Belle-Beille Campus and Monplaisir and Line C opens between Belle-Beille Campus and Angers Roseraie.
 * 🇵🇭 July 20 – LRTA 13000 class cars enter passenger service on Line 1 of the Manila Light Rail Transit System.
 * 🇨🇦 July 24 – Line 3 Scarborough of the Toronto Subway ends service.
 * 🇨🇳 July 26 – Line 2 of the Shaoxing Metro opens from Jinghu Hospital to Tandu.
 * July 31
 * 🇨🇦 – First phase of the Réseau express métropolitain opens in Greater Montreal between Brossard and Central Station.
 * 🇹🇼 – Airport MRT Line of the Taoyuan Metro extends from Huanbei to Laojie River.

August

 * 🇮🇳 August 1 – Pune Metro: Purple Line extends from Phugewadi to Civil Court and Aqua Line extends from Garware College to Ruby Hall Clinic.
 * 🇫🇮 August 7 – Line 3 of the Tampere light rail network extends from Pyynikintori to Santalahti.
 * 🇷🇺 August 17 – Line D3 of the Moscow Central Diameters opens from Zelenograd-Kryukovo to Ippodrom.
 * 🇮🇱 August 18 – Red Line of the Tel Aviv Light Rail opens between HaKomemiyut and Kiryat Arye and between HaKomemiyut and Petah Tikva.
 * August 26
 * 🇨🇳 – Line S2 of Wenzhou Rail Transit opens between Dongshan and Qingdong Road.
 * 🇯🇵 – Utsunomiya Light Rail opens between Utsunomiya Station East and Haga Takanezawa Industrial Park.
 * 🇨🇳 August 27 – Fuzhou Metro: Line 4 opens between Fenghuangchi and Difengjiang and Line 5 extends from Ancient Luozhou Town and Fuzhou South Railway Station.
 * 🇮🇩 August 28 – Jabodebek LRT: Cibubur Line opens between Harjamukti and Dukuh Atas and Bekasi Line opens between Jatimulya and Dukuh Atas.
 * 🇹🇷 August 30 – Line T5 of the Istanbul Tram extends from Cibali to Eminönü.

September

 * 🇳🇬 September 4 – Blue Line of the Lagos Rail Mass Transit opens for limited commercial operation between Mile 2 and Marina.
 * 🇷🇺 September 6 – Solntsevskaya Line of the Moscow Metro extends from Rasskazovka to Aeroport Vnukovo.
 * 🇷🇺 September 7 – Lyublinsko-Dmitrovskaya Line of the Moscow Metro extends from Seligerskaya to Fiztekh.
 * 🇨🇳 September 8 – Line 3 of the Zhengzhou Metro extends between Yinggang and Binhe Xincheng Nan.
 * 🇷🇺 September 9 – Line D4 of the Moscow Central Diameters opens from Zheleznodorozhnaya to Aprelevka.
 * 🇲🇽 September 15 – El Insurgente commuter rail opens from Zinacantepec to Lerma.
 * 🇺🇸 September 16 – T Line of the Link light rail system extends from Theater District to St. Joseph.
 * September 17
 * 🇮🇳 – Airport Express Line of the Delhi Metro extends from Dwarka Sector 21 to Yashobhoomi Dwarka Sector 25.
 * 🇬🇧 – Line 1 of the West Midlands Metro extends from The Royal to Wolverhampton.
 * 🇲🇽 September 18 – Line Z and Line K of the Tren Interoceánico resume freight service.
 * 🇨🇳 September 21 – Line 1 of the Xi'an Metro extends from Fenghesenlingongyuan to Xianyangxizhan.
 * 🇺🇸 September 22 – Brightline extends from West Palm Beach to Orlando International Airport.
 * 🇨🇱 September 25 – Line 3 of the Santiago Metro extends from Los Libertadores to Plaza de Quilicura.
 * September 26
 * 🇨🇳 – Guangzhou–Shanwei high-speed railway opens.
 * 🇨🇳 – opens between Jiufengshan and Longquanshan.


 * September 28
 * 🇨🇳 – Fuzhou–Xiamen high-speed railway opens.
 * 🇨🇳 – Shanghai–Nanjing Riverside high-speed railway opens.
 * 🇨🇳 – Line 10 of the Zhengzhou Metro opens between Zhengzhou railway station and Zhengzhou West railway station.


 * September 29
 * 🇨🇳 – Line 3 of the Harbin Metro extends from Taipingqiao to Chinese-baroque Block.
 * 🇨🇳 – Shenyang Metro: Line 2 extends from Quanyunlu to Taoxianjichang and Line 4 opens between Zhengxinlu and Chuangxinlu.

October

 * 🇮🇩 October 2 – Jakarta–Bandung high-speed railway opens.
 * 🇬🇧 October 4 – West Midlands to Manchester section of the High Speed 2 railway cancelled.
 * 🇬🇧 October 5 – Northern Line of Merseyrail extends from Kirkby to Headbolt Lane.
 * 🇮🇳 October 9 – Purple Line of the Namma Metro extends from Kengeri to Challaghatta and connects Krishnarajapuram with Baiyappanahalli.
 * 🇮🇷 October 10 – Tehran Metro: extends from Shahid Sattari to Koushar and  extends from Shahid Dadman to Meydan-e Katab.
 * 🇨🇿 October 13 – Lines 4 and 5 of the Prague tram network extend from Holyně to Slivenec.
 * 🇫🇷 October 20 – Line B of the Lyon Metro extends from Gare d'Oullins to Saint-Genis-Laval Hôpitaux Sud.
 * October 21
 * 🇫🇮 – Jokeri light rail opens between Itäkeskus and Keilaniemi.
 * 🇮🇳 – Delhi–Meerut Regional Rapid Transit System opens initial section between Sahibabad and Duhai.


 * 🇨🇳 October 26 – Line 13 of the Qingdao Metro extends from Jinggangshan Road to Jialingjiang West Road.
 * 🇹🇷 October 28 – Line T4 of the Kayseray opens between Cumhuriyet Meydanı and İzzet Bayraktar Cami.
 * October 29
 * 🇩🇿 – Boughezoul–Laghouat railway opens.
 * 🇺🇸 – L-Line of Milwaukee's The Hop opens for limited commercial operation between Wisconsin Ave and Lakefront.

November

 * 🇨🇦 November 4 – Valley Line of Edmonton LRT opens between 102 Street and Mill Woods.
 * 🇧🇩 November 5 – Line 6 of the Dhaka Metro Rail extends from Agargaon to Motijheel.
 * 🇹🇭 November 10 – Eastern Line of Thai Railways extends to Sattahip port with two new stations U Taphao and Chuk Samet.
 * 🇷🇴 November 15 – Line M2 of the Bucharest Metro extends from Berceni to Tudor Arghezi.
 * 🇮🇳 November 17 – Line 1 of the Navi Mumbai Metro opens from CBD Belapur to Pendhar.
 * 🇦🇺 November 20 – Transperth's Armadale and Thornlie lines close for the Victoria Park-Canning Level Crossing Removal Project.
 * 🇹🇭 November 21 – MRT Pink Line opens for limited commercial operation between Nonthaburi Civic Center and Min Buri.
 * 🇨🇱 November 27 – Line 2 of the Santiago Metro extends from La Cisterna to Hospital El Pino.
 * 🇨🇳 November 28 – Line 19 of the Chengdu Metro extends from Jiujiang North to Tianfu Station.
 * November 30
 * 🇨🇳 – Chongqing Rail Transit: Line 5 connects Dashiba with Shiqiaopu and Line 10 extends from Houbao to Lanhualu.
 * 🇮🇷 – Line 1 of the Tehran Metro extends via the Imam Khomeini Airport Branch from Forudgahi-e Imam Khomeini to Shahr-e Parand.

December

 * December 1
 * 🇨🇳 – Line 5 of the Wuhan Metro extends from Hubei University of Chinese Medicine to Hongxia.
 * 🇪🇨 – Line 1 of the Quito Metro opens between El Labrador and Quitumbe.


 * 🇫🇷 December 4 – Line V of Transilien opens between Massy-Palaiseau and Versailles-Chantiers to replace newly discontinued RER C service.
 * December 8 – Taipa Line of the Macau Light Rapid Transit extends from Ocean to Barra.
 * 🇫🇷 December 9 – RER C ends service between Savigny-sur-Orge and Massy-Palaiseau.
 * December 10
 * 🇫🇷 – Line T12 of the Île-de-France tramway network opens between Évry-Courcouronnes to Massy-Palaiseau.
 * 🇩🇪 – Line 13 of the Hannover Stadtbahn opens between Wallensteinstraße and Hemmingen.
 * 🇨🇭 – Line 15 of the Geneva tramway network extends from Palettes to ZIPLO.
 * 🇲🇽 December 15 – Tren Maya opens between Cancún and San Francisco de Campeche.
 * December 16
 * 🇨🇳 – Line 3 of the Guiyang Metro opens between Luowan and Tongmuling.
 * 🇰🇷 – Line 1 of the Seoul Metropolitan Subway extends from Soyosan to Yeoncheon.


 * 🇩🇪 December 17 – Line 16 of the Mannheim/Ludwigshafen tramway network opens between Bensheimer and Sullivan.
 * December 20
 * 🇨🇳 – Line 12 of the Zhengzhou Metro opens between Longzihu Dong and Lianghu.
 * 🇺🇦 – Dnipro City Express opens between Dnipro and Kamianske.


 * 🇵🇪 December 21 – of the Lima Metro opens between Evitamiento and Mercado Santa Anita.
 * December 22
 * 🇲🇽 – Line Z of the Tren Interoceánico opens for commercial operation between Salina Cruz and Coatzacoalcos.
 * 🇵🇱 – Line 25 of the Silesian Interurbans extends from Dąb Huta Baildon to Katowice Dąbrowki.


 * 🇨🇳 December 23 – Suzhou Rail Transit introduces through service between Line 3 and Line 11.
 * December 26
 * 🇧🇷 – of the Salvador Metro extends from Campinas to Águas Claras.
 * 🇨🇳 – Line 3 of the Harbin Metro extends from Chinese-baroque Block to Beima Road.
 * 🇨🇳 – Hefei Metro: Line 2 extends from Sanshibu to Cuozhen and Line 3 extends from Xingfuba to Sheng Ertong Yiyuan Xinqu.
 * December 27
 * 🇨🇳 – Line 2 of Nantong Rail Transit opens between Xingfu and Xianfeng.
 * 🇨🇳 – Line 8 of the Shenzhen Metro extends from Yantian Road to Xiaomeisha.
 * 🇵🇭 – PNR South Main Line reopens between Naga and Legazpi.
 * December 28
 * 🇨🇳 – Line 18 of Chongqing Rail Transit opens between Fuhualu and Tiaodengnan.
 * 🇨🇳 – Guangzhou Metro: Line 5 extends from Wenchong to Huangpu New Port and Line 7 extends from Higher Education Mega Center South to Yanshan.
 * 🇨🇳 – Line 7 of the Nanjing Metro extends via a disconnected branch from Yingtiandajie to Xishanqiao.
 * 🇨🇳 – Line 11 of the Tianjin Metro opens between Dongjiangdao and Dongliliujinglu.
 * 🇨🇳 – Zhengxu Line of the Zhengzhou Metro opens between Chang'anlubei and Xuchangdong Railway Station.
 * December 30
 * 🇨🇳 – 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.
 * 🇨🇳 – Line 19 of the Wuhan Metro opens between West Square of Wuhan Railway Station and Xinyuexi Park.
 * 🇵🇱 – Line 4 of the Olsztyn tramway network opens between Dworzec Głowny and Pieczewo.
 * 🇲🇽 December 31 – Tren Maya extends from San Francisco de Campeche to Palenque.