RER A is one of the five lines in the Réseau Express Régional, a hybrid commuter rail and rapid transit system serving Paris, France and its suburbs. The 108.5-kilometre (67.4 mi) line crosses the region from east to west, with all trains serving a group of stations in central Paris, before branching out towards the ends of the line.
RER A train at the underground La Défense station
A train arriving at Auber while the previous one has not completely cleared the platform, caused by the rapid pace of SACEM.
Inside an MI 84
Cergy-le-Haut
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
Z 20900 at Versailles Chantiers (RER C)
Z 57000 at Paris Gare de Lyon (Transilien Line R and RER D)
Z 50000 (RER E and Transilien Line P)