RER A1

The RER Ligne A1 (French for RER Line A1) is a branch of the RER A which operates between Saint-Germain-en-Laye and meets the city branch at Nanterre-Prefecture.

The trains operate from Vicennes (A2 and A4 branch)and stop at:

• Vicennes
• Nation
• Gare de Lyon
• Châtelet-Les Halles
• Auber
• Charles De Gaulle-Étoile
• La Defense (Grande Arche)
• Nanterre-Préfecture
• Nanterre-Université
• Nanterre-Ville
• Rueil-Malmaison
• Chatou-Croissy
• Le Vésinet-Centre
• Le Vésinet-Le Pecq
• Saint-Germain-en-Laye