Rezvany, N., Hillel, T., and Bierlaire, M. (2024)

Integration of group decision-mechanisms into activity-based models

17th International Conference on Travel Behavior Research , Vienna, Austria

Activity-based models (ABMs) have been widely used by transport modellers over the past decades. The dominant approach in activity-based travel behaviour models is based on individual decision-making. However, various interactions exist for individuals making decisions as a member of a household, as well as, different group decision-making mechanisms which can affect the choices of the agents. We investigate the development of integrated models of household group decision-making strategies and activity-travel patterns. We incorporate and operationalise group decision-making mechanisms into household scheduling model, building on the Optimisation-based Activity Scheduling Integrating Simultaneous choice dimensions (OASIS) framework with intra-household interactions. Household-level OASIS simulates multiple intra-household interaction dimensions within the same framework and the coordination of the activity scheduling decisions among all household members is captured. We then showcase how different decision-making mechanisms and relative power of agents in a household can cause variations in the activity scheduling and travel patterns of agents in a household.