ABSTRACT
The paper presents a simulation-based approach to the resilience analysis of Critical Infrastructures systems, making possible the characterisation of the structural resilience features of the system and the estimation of benefits due to improved resilience practices, such as preparedness or responsiveness, e.g. thanks to enhanced information sharing processes among the actors. Resilience characterisation comprises the assessment of node vitality, i.e. the disservice generated at system level, and agility, i.e. the sensitivity of system’s performance to an improved response time in the node. Scenario analysis is then used to simulate different strategies to minimise the impacts of large events. The transportation system in the metropolitan area of Milan has been used to this purpose; specifically, the reduction of incident response times at vital nodes was simulated according to a real snowfall scenario.
