Train between Paris-St-Lazare and Rouen. The 'Voitures 2 niveaux', more commonly known as V2N, are SNCF cars offering greater capacity, at equal length, than a single-tier car.
They were designed to cope with the strong growth in traffic on all lines in the greater Parisian suburbs, towards which it is impossible, on most axes, to increase the number of traffic given their saturation. They are suitable for electric traction (BB 7200 and BB 15000). Unlike similar commuter cars, they are more comfortable and suitable for speeds of 160 km/h (100mph)
