Metro & RER operate 7 days a week, including public holidays from around 05:30 to 00:30.
Paris Metro has 16 lines, numbered from 1 to 14
Metro lines have directions indicated by the terminus station at each end (e.g La Défense-Château de Vincennes).
RER consists of 5 lines referred to by the letters A, B, C, D & E
All RER trains call at central Paris stations then split into several branches.
In the RER, always refer to the overhead panels located above the platforms to determine the final destination of the train and where it will stop.
For example, if a light is lit next to Aéroport Ch. de Gaulle 1 or Aéroport Ch. de Gaulle 2, it means the next train will stop at CDG airport.