Since environmental considerations are increasingly coming to the fore in politics and thus also in companies and municipalities, mobility behaviour must also be adapted to this new perspective. The aim of this project is an ex post analysis and optimisation of vehicle fleets on the basis of journeys carried out in the past. Now not only economic, but also ecological aspects are to be considered and directly incorporated into the optimisation. In addition, the resulting model should be compatible with various cost structures and mobility types in order to be generally applicable and adaptable.