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Indian locomotive class WDM-3A
The Indian locomotive class WDM-3A is a 3,100 hp broad-gauge mixed-traffic diesel-electric locomotive built by DLW Varanasi from 1994, with many rebuilt from WDM-2 units at Patiala.
Indian locomotive class WDM-3D
The Indian locomotive class WDM-3D, also written WDM3D, is a 3,300 hp Co-Co diesel-electric mixed-traffic locomotive developed at Varanasi in 2003 for Indian Railways, the last ALCO-based class built there.
Indian locomotive class WP
The Indian locomotive class WP, or WP pacific, was a 4-6-2 Pacific broad gauge passenger steam locomotive introduced in 1947, designed to burn high-ash Indian coal.
Indian Pacific
The Indian Pacific is an Australian long-distance passenger train running between Sydney and Perth since 1970, now operated by Journey Beyond as a luxury journey.
Indian Railway Catering and Tourism Corporation
Indian Railway Catering and Tourism Corporation (IRCTC) is an Indian public sector company under the Ministry of Railways, incorporated in 1999 to run catering, tourism, and online ticketing.
Indian Railways (भारतीय रेल)
Indian Railways (भारतीय रेल), also known as Bhāratīya Rēla, is India's state-owned railway under the Ministry of Railways. Its first train ran from Bombay to Thane in 1853.
Indian Railways freight corridors
The Indian Railways freight corridors, formally the Dedicated Freight Corridors, are 2,843 km of freight-only railway lines built parallel to India's congested trunk routes, completed in 2026.
Injector
An injector is a steam-driven appliance with no moving parts that forces feedwater into a steam boiler against its own pressure, invented by Henri Giffard in 1858.
Inner Ring Line
The Inner Ring Line, in Bengaluru known as the Inner Ring Metro, is a proposed 34-kilometer fully underground circular metro corridor in Bengaluru, India, currently shelved.
InnoTrans
InnoTrans is the leading international trade fair for transport technology, held every two years in Berlin by Messe Berlin, featuring vehicles displayed on 3,500 meters of track.
Inspection car
An inspection car is a dedicated rail vehicle fitted with instruments that measure track geometry and rail condition while traveling over the line, replacing older visual inspections.
Integral Coach Factory
Integral Coach Factory (ICF), formerly Perambur Coach Factory, is Indian Railways' coach works in Chennai, opened by Nehru in 1955 with Swiss technology; builder of Vande Bharat trains and 75,000 coaches by 2024.
Interchange station
An interchange station is a passenger transport station where travelers transfer between modes, such as rail and bus, or between two services of the same mode.
InterCity (British Rail)
InterCity was the British Rail business sector, formed in 1982, that ran long-distance express passenger services and was the only sector in profit before privatization.
InterCity 125
InterCity 125, also known as the High Speed Train (HST), is a British diesel passenger train that entered service in 1976 and became the world's fastest diesel train.
InterCity 225
The InterCity 225 is a British high-speed train of a Class 91 electric locomotive and Mark 4 coaches, built for the East Coast Main Line from 1989.
Intercity Express (Germany)
The Intercity Express, or ICE (InterCityExpress), is Deutsche Bahn's family of high-speed trains and branded long-distance service, running since 1991 at up to 320 km/h.
Intermodal freight transport
Intermodal freight transport moves goods in one and the same loading unit using two or more transport modes like road, rail, or air. It is a type of multimodal transport.
International Association of Public Transport
The International Association of Public Transport (UITP) is the worldwide association of public transport authorities, operators, and policy makers, founded in 1885 and headquartered in Brussels.
International Association of Sheet Metal, Air, Rail and Transportation Workers
SMART, the International Association of Sheet Metal, Air, Rail and Transportation Workers, is a North American labor union formed by the 2008 merger of the SMWIA and UTU, with about 230,000 members.
International Railway Congress Association
The International Railway Congress Association (IRCA; French: Association Internationale du Congrès des Chemins de Fer) is an international body founded in Brussels in 1885 to promote railway progress through periodical congresses.
International Transport Forum
The International Transport Forum (ITF), created in 2006 from the European Conference of Ministers of Transport, is an OECD-hosted think tank for transport policy holding an annual summit of ministers in Leipzig.
International Union of Private Railways
The International Union of Private Railways (UIP), founded in 1950, is a Brussels-based association representing private freight wagon keepers whose members own over 255,000 wagons.
International Union of Railways
The International Union of Railways (UIC), from the French Union Internationale des Chemins de fer, is a worldwide association of railway operators founded in Paris in 1922.
Invicta (locomotive)
Invicta is an early British steam locomotive built in 1829 by Robert Stephenson and Company for the Canterbury and Whitstable Railway, preserved today at the Whitstable Museum and Gallery.
Iowa Interstate Railroad
The Iowa Interstate Railroad (IAIS) is a privately held Class II regional freight railroad founded in 1984 on the former Rock Island route between Chicago and Omaha, Nebraska.
Iowa Northern Railway Company
Iowa Northern Railway Company (IANR) was a short line railroad in northeastern Iowa, operating former Rock Island lines from 1981 until its 2025 absorption into Canadian National.
Iranian Railways
Iranian Railways is the national railway system of Iran, anchored by the Trans-Iranian Railway, completed in 1938 and inscribed on the UNESCO World Heritage List in 2021.
Island platform
An island platform, also called a center platform, is a railway platform with tracks on both sides, letting one platform serve trains in each direction.
Island Rail Corridor
The Island Rail Corridor, formerly the Esquimalt and Nanaimo Railway, is a corridor on Vancouver Island built in the late 19th century, with passenger service suspended since 2011.