SNCF in the context of "National champions"

The Réseau Express Régional (French pronunciation: [ʁezo ɛkspʁɛs ʁeʒjɔnal]; English: Regional Express Network), commonly abbreviated RER (pronounced [ɛʁəɛʁ]), is a hybrid commuter rail and rapid transit system serving the city centre of Paris and its suburbs. It acts as a combined city centre underground rail system and suburbs-to-city-centre commuter rail, similar to the S-Bahn in Germany, Austria and Switzerland, S-train in Copenhagen, the Pendeltåg in Sweden, the Overground and Elizabeth Line in London, S Lines in Milan, plus many other commuter rail networks around the world.

Conceived of as a métropolitain express ('express metro') during the mid-1930s, the scheme was revived in the 1950s and construction began in the early 1960s. The RER was not fully conceptualised until the completion of the Schéma directeur d'aménagement et d'urbanisme (rough translation: 'master plan for urban development') in 1965. The RER network, which initially comprised two lines, was formally inaugurated on 8 December 1977 in a ceremony that was attended by President Valéry Giscard d'Estaing. A second phase of construction commenced at the end of the 1970s which saw additional lines constructed along with extensions to the original two. The RER is operated partly by RATP, the authority that operates most of the public transport in Paris, and partly by the SNCF, France's national rail operator.

The Île-de-France tramways (French: Tramways d'Île-de-France) is a network of modern tram lines in the Île-de-France region of France. Fifteen lines are currently operational (counting Lines T3a and T3b as separate lines), with extensions and additional lines in both construction and planning stages. Although the system mainly runs in the suburban regions of Paris, lines T3a and T3b run entirely within Paris city limits, serving as a high capacity ring line replacing the Petite Ceinture bus route. Lines T2 and T9, on another hand, start their routes within Paris's borders before heading out. While lines operate independently of each other and are generally not connected, some connections do exist: between lines T2 and T3a (at the Porte de Versailles station, since 2009), T3a and T3b (at the Porte de Vincennes station, since 2012), T1 and T5 (at the Marché de Saint-Denis station, since 2013), T1 and T8 (at the Saint-Denis train station, since 2014), T8 and T11 (at both Villetaneuse-Université and Épinay-sur-Seine stations, since 2017), T3a and T9 (at the Porte de Choisy station, since 2021) and T6 and T10 (at Hôpital Béclère, since 2023). However, the final design of the entire planned tram network is fairly integrated. (The prefix "T" in tram line numbers avoids confusion with the numbering of Paris Métro lines, a pattern followed in other public transport networks such as the new cable car route in Créteil, dubbed C1.)

Most lines (with the exceptions of lines T4, T9, T11, T12, T13, and T14) are operated by the Régie Autonome des Transports Parisiens (RATP), which also operates the Paris Métro and most bus services in the Paris immediate area. Furthermore, while most lines use conventional steel-wheel rolling stock, two lines (T5 and T6) use rubber-tyred trams. Lines T4, T11, T12, T13 and T14 are tram-trains, sharing tracks with main-line railways, and are operated as part of French national rail operator SNCF's Transilien regional rail network.

The Bidasoa (Basque: [bi'd̪as̺oa]; Spanish: [biða'soa]; French: Bidassoa, pronounced [bidasɔa]) is a river in the Basque Country of northern Spain and southern France that runs largely south to north. Named as such downstream of the village of Oronoz-Mugairi (municipality of Baztan) in the province of Navarre, the river actually results from the merger of several streams near the village Erratzu, with the stream Baztan that rises at the north-eastern side of the mount Autza (1,306 m) being considered the source of the Bidasoa. It joins the Cantabrian Sea (Bay of Biscay) between the towns of Hendaye and Hondarribia.

The river is best known for establishing the borderline at its lower tract. This stretch is crossed not only by aircraft at low height but by important European communication axes, namely AP8 E5 E80 - E70 A63 (motorway, connection at the Biriatu toll), main roads N1 - N10 (connection at the roundabout of Saizar by the river) and major French and Spanish railway networks,—Renfe and SNCF. Besides these major lines, other regional ones cross it too, e.g. regional railway EuskoTren (terminus in Hendaye) and another double bridge (pedestrians/vehicles) joining the towns on the border, i.e. the historical Santiago Bridge (Way of St. James). At this stage of the river, urban landscape prevails (built-up area).

A turbine–electric transmission, or turbine–electric powertrain, system includes a turboshaft gas turbine connected to an electrical generator, creating electricity that powers electric traction motors. No clutch is required.

Turbine–electric transmissions are used to drive both gas turbine locomotives (rarely) and warships.

Keolis is a French transportation company that operates public transport systems all over the world. It manages bus, rapid transit, tram, coach networks, rental bikes, car parks, water taxi, cable car, trolleybus, and funicular services. Based in Paris, France, the company is 70% owned by SNCF and 30% owned by the Caisse de dépôt et placement du Québec.

Keolis operates a number of networks in France (Transports Bordeaux Métropole in Bordeaux, the Lyon public transport on behalf of SYTRAL, the public transport service for the Greater Rennes area since 1998, Ilévia in Lille, and the entire mobility chain in Dijon). Internationally, it manages buses in several cities in Sweden, central and eastern regions of the Netherlands, and in the United States. It also manages various rail networks internationally, such as the commuter rail in Boston, the Hyderabad Metro, the Docklands Light Railway in London, the Pujiang line of the Shanghai Metro, the Nottingham Express Transit, and the Manchester Metrolink.

The British Rail Class 92 is a dual-voltage electric locomotive, which can run on 25 kV AC from overhead wires or 750 V DC from a third rail. It was designed specifically to operate services through the Channel Tunnel between Great Britain and France. Eurotunnel indicates the Class 92 locomotive as the reference for other locomotives which railway undertakings might want to get certified for usage in the Channel tunnel.

Locomotives of this type are operated by GB Railfreight/Europorte 2 and DB Cargo UK. In France, a number were also owned and operated by SNCF; these were classified as CC 92000 on French railways.

The TGV (French: [teʒeve] ; train à grande vitesse, [tʁɛ̃ a ɡʁɑ̃d vitɛs] , 'high-speed train') is France's intercity high-speed rail service. With commercial operating speeds of up to 320 km/h (200 mph) on the newer lines, the TGV was conceived at the same period as other technological projects such as the Ariane 1 rocket and Concorde supersonic airliner; sponsored by the Government of France, those funding programmes were known as champion national ('national champion') policies. In 2023 the TGV network in France carried 122 million passengers.

The state-owned SNCF started working on a high-speed rail network in 1966. It presented the project to President Georges Pompidou in 1974 who approved it. Originally designed as turbotrains to be powered by gas turbines, TGV prototypes evolved into electric trains with the 1973 oil crisis. In 1976 the SNCF ordered 87 high-speed trains from Alstom. Following the inaugural service between Paris and Lyon in 1981 on the LGV Sud-Est, the network, centred on Paris, has expanded to connect major cities across France, including Marseille, Lille, Bordeaux, Strasbourg, Rennes and Montpellier, as well as in neighbouring countries on a combination of high-speed and conventional lines. The success of the first high-speed service led to a rapid development of lignes à grande vitesse (LGVs, 'high-speed lines') to the south (Rhône-Alpes, Méditerranée, Nîmes–Montpellier), west (Atlantique, Bretagne-Pays de la Loire, Sud Europe Atlantique), north (Nord, Interconnexion Est) and east (Rhin-Rhône, Est). Since it was launched, the TGV has not recorded a single passenger fatality in an accident on normal, high-speed service.

Ouigo (French pronunciation: [wiˈɡo]) is a low-cost service range of both conventional and high-speed trains run by SNCF in France, and also to Belgium in cooperation with NMBS/SNCB. The literal translation of Ouigo from French to English is "yes go"; the name is also a play on words with the English homonym "we go." It is composed of two different services: Ouigo Grande Vitesse, which is a brand of SNCF operating high-speed trains; and Ouigo Vitesse Classique, a brand under which Oslo, a subsidiary of SNCF, operates conventional speed trains.

Ouigo was established in 2013 to offer budget long-distance services on the core routes of the French railway network. The first train ran on 2 April 2013. Ouigo rolling stock was configured in a 'no-frills' arrangement, with minimal onboard amenities and a single class of seating. It was intended that passengers seeking a higher-level service would continue to use SNCF's regular high-speed trains since rebranded as TGV inOui. Ouigo quickly proved popular with the travelling public, selling in excess of 2.5 million tickets during its first year of operation, and was rapidly expanded to cover more stations and regions.