page_title: Paris
section_title: Métro, RER and tramway
hierarchical_section_title: Paris / Infrastructure / Transport / Métro, RER and tramway
caption_attribution_description: La station de métro Abbesses à Paris.
context_page_description: Paris is the capital and most populous city of France, with an estimated population of 2,148,271 residents as of 2020, in an area of 105 square kilometres. Since the 17th century, Paris has been one of Europe's major centres of finance, diplomacy, commerce, fashion, science and arts. The City of Paris is the centre and seat of government of the Île-de-France, or Paris Region, which has an estimated official 2020 population of 12,278,210, or about 18 percent of the population of France. The Paris Region had a GDP of €709 billion in 2017. According to the Economist Intelligence Unit Worldwide Cost of Living Survey in 2018, Paris was the second most expensive city in the world, after Singapore, and ahead of Zürich, Hong Kong, Oslo and Geneva. Another source ranked Paris as most expensive, on a par with Singapore and Hong Kong, in 2018.
  The city is a major railway, highway and air-transport hub served by two international airports: Paris–Charles de Gaulle and Paris–Orly. Opened in 1900, the city's subway system, the Paris Métro, serves 5.23 million passengers daily; it is the second busiest metro system in Europe after the Moscow Metro.
context_section_description: Since the inauguration of its first line in 1900, Paris's Métro network has grown to become the city's most widely used local transport system; today it carries about 5.23 million passengers daily through 16 lines, 303 stations (385 stops) and 220 km (136.7 mi) of rails. Superimposed on this is a 'regional express network', the RER, whose five lines (A, B, C, D, and E), 257 stops and 587 km (365 mi) of rails connect Paris to more distant parts of the urban area.
  Over €26.5 billion will be invested over the next 15 years to extend the Métro network into the suburbs, with notably the Grand Paris Express project.
  In addition, the Paris region is served by a light rail network of nine lines, the tramway: Line T1 runs from Asnières-Gennevilliers to Noisy-le-Sec, Line T2 runs from Pont de Bezons to Porte de Versailles, Line T3a runs from Pont du Garigliano to Porte de Vincennes, Line T3b runs from Porte de Vincennes to Porte d'Asnières, Line T5 runs from Saint-Denis to Garges-Sarcelles, Line T6 runs from Châtillon to Viroflay, Line T7 runs from Villejuif to Athis-Mons, Line T8 runs from Saint-Denis to Épinay-sur-Seine and Villetaneuse, all of which are operated by the RATP Group, and line T4 runs from Bondy RER to Aulnay-sous-Bois, which is operated by the state rail carrier SNCF. Five new light rail lines are currently in various stages of development.
caption: The Paris Métro is the busiest subway network in the European Union.
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