Crowd Disasters as Systemic Failures: Analysis of the Love Parade Disaster[1]
Summary
This paper analyses the crowd disaster at the Love Parade in Duisburg, Germany on July 24, 2010, asking whether fatalities in such events are caused by relentless behaviour of people, a psychological state of panic, or a breakdown of coordination. The analysis is qualitative and based on publicly available videos and materials documenting the event's planning, organisation and the disaster itself, and the authors state that they focus on contributing causal factors and their mutual interdependencies rather than on legal issues or the judgment of personal or institutional responsibilities. They report that video recordings show people stumbled and piled up through a 'domino effect' resulting from a phenomenon they call crowd turbulence or a 'crowd quake', which they distinguish from disasters caused by panic stampedes or crowd crushes. They describe this turbulence as a consequence of amplifying feedback and cascading effects typical of systemic instabilities, and introduce a new scale for assessing the criticality of conditions in a crowd.
So what
The operational implication is that crowd-safety monitoring should look for turbulence and building pressure rather than waiting for visible panic, because the authors describe the fatal mechanism as a systemic instability that can occur with no bad intent from anyone. Their criticality scale is proposed as a way to intervene earlier, but it is introduced in this paper rather than validated in it, so it should be treated as a framework to trial rather than a settled standard.
Read the paper
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