January 14 – A Serbian Railways train decorated with Serbian propaganda intended to run from Belgrade to North Mitrovica is turned back at Raška by order of the Serbian Prime Minister, amidst claims that the authorities in Kosovo would prevent it from crossing their border.[7]
May 31 – Official opening of Mombasa–Nairobi Standard Gauge Railway in Kenya, 485 km (301 mi) of standard gauge track built with Chinese finance and expertise, cutting the Mombasa–Nairobi passenger journey time to 4½ hours, compared to 12 hours on the previous line.[15]
June[]
June 18 – Tuas West extension, a 7.5-kilometre (4.7 mi) extension of the East West MRT Line in Singapore, opens.[16]
September 23 – The grand opening of the Aarhus Letbane is cancelled several hours prior to the event due to missing security clearances from the Danish Transport Authority.[28]
September 26 – Kaohsiung Circular Line (First Section) completed.
hideThis section has multiple issues. Please help or discuss these issues on the talk page. (Learn how and when to remove these template messages)
This section needs to be updated. Please help update this article to reflect recent events or newly available information.(October 2020)
This section needs additional citations for verification. Please help by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: – ···scholar·JSTOR(October 2020) (Learn how and when to remove this template message)
(Learn how and when to remove this template message)
January 1 – Phase I of New York City's Second Avenue Subway is opened for revenue service after almost a century of planning.[1]
January 1–18 – First scheduled through railborne intermodal container freight service from Yiwu (China) to London via the New Eurasian Land Bridge and Channel Tunnel.[2]
January 10 – Addis Ababa–Djibouti Railway inaugurated throughout.[3][4][5]
January 11 – Sale of English train operating company c2c by National Express to Trenitalia is agreed.[6]
January 14 – A Serbian Railways train decorated with Serbian propaganda intended to run from Belgrade to North Mitrovica is turned back at Raška by order of the Serbian Prime Minister, amidst claims that the authorities in Kosovo would prevent it from crossing their border.[7]
February 26 – Saudi Railway Company opens the SAR Riyadh-Qurayyat Line to passengers from King Khalid International Airport, Riyadh, to the Al-Qassim Region in Saudi Arabia.[10]
March 2 – Taoyuan International Airport MRT opened.
– Tokyo Metro (former Eidan Electric Railway) phases out 01 series. Some trains are preserved or sent to Kumamoto Electric Railway.
April 3 – 2017 Saint Petersburg Metro bombing.
April 28 – The Strasbourg tramway is extended over a new bridge across the Rhine to Kehl.[12]
May 31 – Official opening of Mombasa–Nairobi Standard Gauge Railway in Kenya, 485 km (301 mi) of standard gauge track built with Chinese finance and expertise, cutting the Mombasa–Nairobi passenger journey time to 4½ hours, compared to 12 hours on the previous line.[15]
June 18 – Tuas West extension, a 7.5-kilometre (4.7 mi) extension of the East West MRT Line in Singapore, opens.[16]
June 20 – June 2017 Brussels attack.
July 10 – Opening of Stockholm City Line.[20]
July 17 – Full opening of MRT Sungai Buloh-Kajang Line.[21][22][23]
August 23 – Auraiya train derailment.
September 21 – Granada Metro opens to passenger service.[27]
September 23 – The grand opening of the Aarhus Letbane is cancelled several hours prior to the event due to missing security clearances from the Danish Transport Authority.[28]
November 18 – Länsimetro extension to Helsinki Metro is opened.
December 15 – Stoosbahn, the world's steepest mass transit funicular, officially opens, connecting Schlattli with Stoos.[31]
December 17 – Opening of the Toronto subway Line 1 Yonge–University extension to Vaughan, Ontario.
December 26 – Soekarno–Hatta Airport Rail Link in Jakarta started operations.[32]
– The new Tithorea–Leianokladi line, replacing the route via Bralos was expected to open.[12]