Simulating dynamical features of escape panic[1]
Summary
This paper uses a model of pedestrian behaviour to investigate the mechanisms of, and preconditions for, panic and jamming caused by uncoordinated motion in crowds. The authors describe crowd stampede induced by panic as one of the most disastrous forms of collective human behaviour, often leading to fatalities as people are crushed or trampled, and note it is sometimes triggered in situations such as fires in crowded buildings and at other times arises during a rush for seats or seemingly without cause. They state that although engineers are finding ways to alleviate the scale of such disasters, their frequency seems to be increasing with the number and size of mass events, while systematic studies of panic behaviour and quantitative theories capable of predicting such crowd dynamics are rare. The simulations are said to suggest practical ways to prevent dangerous crowd pressures, and to identify an optimal escape strategy from a smoke-filled room mixing individualistic behaviour with a collective herding instinct.
So what
The relevance for event safety is that dangerous crowd pressure is modelled as an emergent property of uncoordinated movement and geometry, not of individual misbehaviour, which points remedies toward layout, flow control and pressure management. The findings are simulation-derived, so they inform design review and egress planning rather than supplying on-the-day operational thresholds.
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