Just like in all bigger cities of Europe and the world, metropolises like Paris, Hamburg, Lyon or Berlin are considering the public transport to be the backbone of citizens’ mobility. That said, operators are currently lacking the possibility to crosscheck their systems, to identify critical parts (from an operational and traffic related as well as structural standpoint) and to select the appropriate measures to be applied at the stations with the most imminent need. Based on currently applied qualitative risk assessment approaches – such as consultant ARCADIS is using them already for clients around the world – the partners are developing a semi-quantitative and a fully quantitative methodology that enables the user to comprehensively assess each station and compare the results within a given system. We foresee that a fully quantitative assessment (being the theoretically best solution to the given problem) might overwhelm some operators and therefore an approach with a reduced complexity is also developed. The comparison of the stations includes user effects, such as time of egress or possible fatalities during a threat, together with the structural impact of the given threat and its implications on the effectivity of the total system if the hub is lost for a given duration. Thus, the methodology combines structural assessments with traffic simulations and user related issues. A mathematical algorithm is used, to combine the results within a software boundary and to display the comparison for decision making purposes. Theoretically, the methodology can also be used to assess the “0”-case (without additional measures) with the “1”-case (with selected measures) since the effect of each measure can be traced via the corresponding assessments.