The network is used by seven rail lines, which provide passenger transport between the most important towns and villages on Grande Terre. * The Red Line, als known as Courbet Line (French: Ligne Rouge or Ligne Courbet) connects the villages of Port-du-Cap-Digby and Port-du-Prince-des-Galles with Port-aux-Français. It also serves the Kerguelen Airport. * The Yellow Line, also known as Molloy Shuttle (French: Ligne Jaune or Train-navette-Molloy) is a shuttle train between Molloy and Port-aux-Français without any interlocative stops. With a length of 13.6 kilometres it is easily the shortest train line of the network. * The Blue Line (French: Ligne Bleue) connects Port-aux-Français with Port-Christmas via Port-Couvreux. It is one of two train lines that cross provincial borders, a