The Corridor is a multimodal connection between major cities. The cargo flows in the corridor can comprise complex combination of different load carriers and modes of transports such as rail, road and sea transport. In some cases, the cargo is transported through the entire corridor, but most often it is transported in parts of the corridor to the destined market or the point for shipment. Several of the major North Sea ports are located along the GreCOR corridor. The corridor, with its hinterland connections, is important for cargo flows in the whole North Sea region and for a huge number of companies and many millions of citizens. The aim of GreCOR is to improve the transports of cargo flows in a sustainable direction to minimize the environmental impact as much as possible. The material produced in WP3 will function as benchmark for other Green Corridor projects and public and private stakeholders in other parts of Europe. The purpose is to create a common view of which needs there are within the transport corridor to make it greener, more efficient and safer. Effects of the infrastructure measures will be developed including a mapping of which measures that are already planned so far. The sub-activities will focus on the green corridor but the recommendation and conclusions will be general and applicable in other corridors and the transport network as a whole. A close investigation and collection of statistics is a prerequisite for improved knowledge about the freight flows. This will form the basis for decision-making and policies which lead to implementation and development of the functions of the freight transports.