The expected outcome. At the end of the project we expect to provide a free C/C++ software able to describe and forecast vehicular and pedestrian traffic in urban areas under real conditions, along with a better understanding of the coupling between density dynamics of different types. The software will be the first one able to deal with cars, mopeds and pedestrians under the same virtual environment and the same mathematical model. It will be used for designing roads, junctions, and as a support for management of events involving a large number of people. The software will open the way to info-mobility features like real-time signals or connection with satellite navigators. Finally, the core of the software will be usable as a building block for optimization algorithms, aiming at assessing the best way for reaching given destinations or the best location of architectural elements, emergency exists, ambulance paths. Ensuing research could involve the implementation of a simplified version of the code for the Android operative system for porting to mobile interfaces. All the research outcomes, including research papers, will be public.