This project investigates how the actors in a transportation chain are expected to act when different types of governmental control policies are applied. A simulation-based tool is being developed for use in analyzing the effects of different control policies. The simulator is based on agent technology and include some intelligence with respect to how the transport operators act in different situations. The simulator will be used for analyzing the total costs and environmental effects and in this way provide guidance in decision making regarding control policies. Also, cost-effective strategies for companies can be determined with the simulator.