 This meant that new construction should be tall in order to liberate more space at the ground level and to bring a better luminosity to apartments, and separating heavily traveled roads from smaller local roads and pedestrian areas.Other principles from Le Corbusier, such as surrounding towers with parks were, however, put aside.The guiding plan of urbanism ("Plan d'urbanisme directeur") written in 1959 and applied in 1961, concisely summarizes that new conception of the city