The crucial goal of the project is the development of a software product which enables essential expansion of applicability of current products offered by the company Dynamic Future, s.r.o. The goal is to create an extension of Witness software which will be focused on simulation and optimisation of traffic flows interaction at crossroads. The supporting goals of the project are deepening of research activities of both project partners with concrete contribution to real operation of the systems and bidirectional knowledge transfer which causes increasing competitiveness of both partners participating at the project. The commercialisation of products, publicity and promotion are significant goals of the project as well. The main contribution is to make predictive simulation accessible in the area of traffic flows interaction also for non-professional users. A web application will work without using the Witness software therefore there is no need to buy it. Users do not need to be familiar with principles of simulation and modelling in Witness. Users will work only with values and parametres which correspond to their practice. Commercial affairs, publicity and promotion of the product is also a significant task.