Sheng LI, M.Eng in Intelligent Transport Systems of ENPC, is research engineer at Ecole des Ponts ParisTech (ENPC), after several years as traffic study analyst in a consultancy firm. At ENPC he takes part to the analysis and modeling of mobility systems, especially for the development of STEM (Strategic Technical-Economic Model) and in traffic studies, from semantic development (addressing multimodality and environmental impacts) to application to the Paris region case, passing by software development.