A research titled ‘Theoretical framework for modeling pedestrians crossing behavior along a trip’ co-authored by E.Papadimitriou, G.Yannis and J.Golias from NTUA was published in ASCE Journal of Transportation Engineering in April 2010. A topological approach of pedestrian trip characteristics and crossing decisions is proposed, allowing consideration of distinct patterns of crossing behavior along a trip. Specific techniques from the family of discrete choice models are proposed for determining the number and location of pedestrians’ crossings, accounting for the hierarchical and dynamic nature of pedestrians’ decisions along a trip and a field survey method is presented.