Question of traffic congestions analysed within the framework of a city logistics is such problem, which is caused due to various factors. There are applied different methodological approaches in order to eliminate the traffic congestions. These methods are distinguished each other with regard to their complexity and applied tools. Among these tools just the software simulation plays an irreplaceable role. The software simulation method is an efficient decision-making tool, which is suitable for solving of the traffic problems during the individual solution phases. There will be presented in the following paper application possibilities of the software simulation methods that are specified for solving of the traffic congestions.