The present project consists in the calibration of a four steps transportation planning model for the base year 2005 in order to perform a supply/demand case study on a railway corridor in Europe. The final objective of the project is to set the basis for passenger and freight demand forecasting in a European railway corridor assuming different supply and service scenarios in order to evaluate the interaction and the balance between demand and supply. The four step methodology has been applied to a real case of freight railway corridor which extent is from Algeciras to Stockholm, passing through thirteen European countries. The modelling tool adopted is the Trans-Tools software, integrated with the employ of a set of complementary modules developed by the study team, whose task is to fine tune the final results. Trans-Tools (Tool for Transport Forecasting and Scenario Testing) is a model developed under European funding in order to set the basis for the development of an integrated policy support tool for transport at European Union level. The project consists in 4 parts: the first contains the scope and the objective of the study, as well as the definition of the transport system to be analyzed, which includes both passenger and freight transportation modes (Road, Rail, Air, Inland Waterways, and Short Sea Shipping). The second is a very brief introduction to the four steps transport modelling methodology. The third part contains a description of the main modelling tool employed (Trans-Tools) and its sub-models which are also detailed in the annex 3. This part’s aim is to explain the underlying theory and the assumptions made by each of them. Finally the fourth part describes the additional models which have been created in order to improve the Trans-Tools results (for freight demand) and integrate them (calculation of the rail traffic in terms of number of train instead of passenger/day and tonnes/day). In this part the results of the calibration of the whole model for the base year 2005 are presented too.