International audience Spatial behaviour was studied in the past through group concepts, such as residential or regular migrations from home to work. The will to understand travel behaviour for the full range of trip purposes and the growing personalisation of behaviour leads to adopt the term of mobility from social sciences. This change is not purely semantic. It expresses the transition from a vision based of the needs to the consideration of the strategic capabilities of the persons, from areola-based representations of a local society to network and archipelago-based representations of individual behaviours. We have used, in conjunction with the international community of travel behaviour analysts, the travel surveys introduced in the sixties to feed traffic models, to build concepts, indicators and representations of travel behaviour, to understand in depth the transformations of mobility patterns and to analyse the roles of individual rationality and social norms. The paper relates this history, highlights some key results and strong beliefs and questions the need to explore new paradigms.