A CONCEPTUAL-FRAMEWORK OF INDIVIDUAL ACTIVITY PROGRAM GENERATION

The research in this paper attempts to better understand the process b y which activities are generated at an individual level. Activity-base d travel analyses have gained popularity in recent years because they recognize the complexity of activity behavior and view travel as a der ivative of this behavior. Most activity-based studies have focused on the spatial and temporal linkage of trips; that is, the scheduling of activities. They consider the agenda of activities for participation, and associated attributes of the activity participation (such as mode to activity and location of activity performance), as predetermined. T his paper develops a comprehensive conceptual framework of the relativ ely unexplored area of activity agenda generation. Such a framework wi ll be valuable in empirical modeling of activity generation behavior. A subsequent paper focuses on translating a part of this conceptual fr amework into an empirical model.