The study focused on the spatial changes that have occurred within the new road link (new highway) between Neuchâtel and La Chaux-de-Fonds, commissioned in 1994. Basis of the analysis was the methodological model of the "tripods", which should demonstrate the interactions between transport infrastructure, the potential of the area affected and the behavior of the infrastructure users: The impact of the improved road infrastructure to mobility and on regional development and the settlement activities at the local and global level.