INTERACT is a 2 year (2010-2011) cluster project involving 4 research units: the Spatial Applications Division Leuven (SADL, KU Leuven), the Centre for Operations Research and Econometrics (CORE, UCL), the 'Centre d'Etudes socio-économiques de la Santé? (SESA, UCL) and the? Department of Transport and Regional Economics? (TRP, UA). The project consists of two parts. First, the integration of results from accessibility-related research projects financed by the Belgian Science Policy in the Science for Sustainable Development Programme (SSD), as a basis to formulate policy recommendations and guidelines. Second, focused analyses on specific locations (railway stations) and specific target groups (elderly people).