We present the Transportation And Production Agent-based Simulator (TAPAS), which is
an agent-based model for simulation of transport chains that can be used, e.g., for analysis
of transport-related policy and infrastructure measures. TAPAS is more powerful than traditional
approaches to freight transport analysis, as it explicitly models production and
customer demand, and it captures the interaction between individual transport chain
actors, their heterogeneity and decision making processes, as well as time aspects.
Whereas traditional approaches rely on assumed statistical correlation, TAPAS relies on
causality, i.e., the focus is on the decisions and negotiations that lead to activities. TAPAS
is composed of two connected layers, one that simulates the physical activities, e.g., production
and transportation, and one that simulates the decision making and interaction
between actors. We illustrate TAPAS with a scenario in which the consequences of three
transport policy and infrastructure measures are studied.