...The Régie Autonome des Transports Parisiens (RATP/Autonomous Operator of Parisian Transports) is the major transit operator responsible for public transportation in Paris and its surroundings. It is under the authority of the Syndicat des transports d'Île-de-France (STIF), the Paris region transit authority. Its operational divisions include the Paris Métro system (16 lines), part of the RER, an extensive bus system, and four tram lines. It also operates the Montmartre funicular. Read full entry

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