Since the overturn accident of"Eastern Star"and the explosion in Tianjin Port,traffic safety has become one of the hottest themes.This paper introduces general information of the 13th International Conference on Probabilistic Safety Assessment and Management (PSAM 13).Keynote presentations and technical papers are categorized according to their subjects.Hot topics in the field of system safety including probabilistic safety assessment theory,human reliability analysis theory,industrial safety theory,transportation safety theory,as well as uncertainties are summarized.Discus-sions are also made on how to use PSA theory to improve safety of transportation along with the implementation of China′s "the Belt and Road Initiative".Future trends on probabilistic safety assessment of transport system from the PSAM 13 have been illustrated.Furthermore,a framework of safety assessment on transport system based on probabilistic safety assess-ment theory is developed in order to prevent traffic accidents and improve traffic safety.