The occurrence of life events increases the likelihood of changes in travel behaviour and these are often discussed as windows of opportunity for interventions aimed at improving sustainable travel. Hence, theoretical knowledge of the process of change due to life events is important for enabling the development of interventions suited to these naturally-occurring situations. In this paper, the Framework of RoUtIne Transitions in daily travel (FRUIT) is presented, depicting the internal processes involved when one chapter of life, characterized by stability in daily travel, gives way to another. Building on theory relating to habit disruption and formation, and designed for the inclusion of existing models and concepts relating to deliberate decision-making, the framework points to two critical phases as focus areas. Using an empirical case, the applicability of FRUIT is illustrated, with the implications of the framework for future research and policy being outlined and discussed.