Risk in anthropic environments: methodologies for risk evaluation and exposition reduction

The simulation of an anthropic environments system in emergency conditions requires the study of two strictly connected models: risk analysis and evacuation design. To reduce the exposure component of the risk, evacuation measures have to be implemented. When an event happens in a system or is forecasted in the short term, the evacuation measures have to be applied and in some cases have to be designed in real time. This paper is developed with the following main objectives: the formalization of the risk problem; the definition of the probability (or the frequency) that the event occurs, the vulnerability and the exposition with particular reference to a transportation system; the specification of evacuation measures for the reduction of exposition and risk.