I. Introduction
Emergency management is one of the greatest socially impact topics. Fires or accidents on crowded nightclubs, shopping malls and hotels produce great social alarm, generating special attention to the setting of their emergency and evacuation plans. An additional risk factor, that usually is never considered, is the presence of stored dangerous goods (linen, paints, insecticides, cleaning products and other flammable substances) that may become explosive or generate toxic or corrosive fumes. Since it's virtually impossible to make a preliminary assessment of risks containing all these possibilities, current plans and technologies doesn't address evacuations in an efficient way. As an additional constrain, current design of evacuation plans is a highly complex matter, as it is subject to rigid regulations.