The Réseau Express Régional, commonly abbreviated RER, is a hybrid commuter rail and rapid transit system serving Paris and its suburbs. It acts as a combined city-center underground rail system and suburbs-to-city-center commuter rail. In the city center, it acts as a faster counterpart of the Paris Métro, having fewer stops.
RER C train at Villeneuve-le-Roi station
RER C is one of the five lines in the Réseau Express Régional, a hybrid commuter rail and rapid transit system serving Paris and its suburbs. The 186-kilometre (116 mi) line crosses the region from north to south. Briefly, between September 1979 and May 1980, the line was known as the Transversal Rive Gauche. The line is operated by SNCF.
RER C train crossing the Pont Rouelle, with the Eiffel Tower in the background, as seen from Île aux Cygnes