Want to Get Out Alive? Follow the Ants
This article in Nautilus magazine highlights research by Nirajan Shiwakoti at Monash University in Melbourne into the influence of architectural design on evacuation speed and efficiency. Drawing on the observation that panicking humans and ants exhibit strikingly similar crowding and stampeding behavior — including the tendency to converge on a single exit rather than distributing evenly across multiple exits — the research used ants as an animal model for human escape panic.
A key insight from the research is that human panic triggers ancient evolutionary instincts that override rational behavior. In a room with six exits, rather than dividing evenly, crowds stampede toward just one — a response rooted in the same predator-avoidance instincts that cause animals to clump together under threat. Since we cannot unlearn these instincts, the research argues that smarter architectural design offers a practical way to work around them.
Experiments with ants in different exit configurations produced a counterintuitive finding: strategically obstructing the flow in front of an exit can actually speed up evacuation. Placing a column in front of a mid-wall exit reduced average escape time from 18 to 14 seconds by channeling the crowd into more orderly streams. A corner exit — which naturally structures flow by limiting approach directions to left and right rather than from three sides — produced the fastest escape times of under 9.5 seconds. The underlying principle is that reducing conflict and merging at the exit point, rather than maximizing the open space in front of it, is what drives efficiency.
Shiwakoti’s team is now applying these findings to real-world settings, experimenting with barrier placement in front of Melbourne football stadium exits leading to train stations, with promising preliminary results.
Read the article: Want to Get Out Alive? Follow the Ants (Nautilus, April 2014)
Original research: Enhancing the Panic Escape of Crowd Through Architectural Design