Modelling passengers' behaviour for the case of fire in a metro railway system

In cases where a system can be observed, the designer of an organizational artefact for this system can form a more or less accurate idea about the mechanisms underlying the sys-tem's functioning, and speculate on the effects of alternative design solutions, or, if possi-ble, test them in-situ. In contrast, in cases as the design of a plan for emergency rescue, the system under consideration cannot be observed. The designer can form an image about the functioning of the system only under normal situations, as well as from descriptions and analyses of past events.