The main aim of this paper is to illustrate the consequences that the future of European transport networks may have on EU countries regional development, especially in the context of the core periphery pattern. For this purpose we will analyze firstly, the common transport policy and its different stages are illustrated, secondly the nature of transport TENs and financial problems linked to the implementation of these infrastructures are analyzed at the end the impact of TENs on the regional development and on mobility of factors is discussed by using the Krugman model.