# Fluctuations in Pedestrian Evacuation Times: Going One Step Beyond the Exit Capacity Paradigm for Bottlenecks

@article{Nicolas2019FluctuationsIP,
title={Fluctuations in Pedestrian Evacuation Times: Going One Step Beyond the Exit Capacity Paradigm for Bottlenecks},
author={Alexandre Nicolas},
journal={Traffic and Granular Flow '17},
year={2019}
}
For safety reasons, it is important that the design of buildings and public facilities comply with the guidelines compiled in building codes.The latter are often premised on the concept of exit capacity, \emph{i.e.}, the mean pedestrian flow rate through a bottleneck (at congestion). Here, we argue that one should duly take into account the evacuation time fluctuations when devising these guidelines. This is particularly true when the narrowing isabrupt and the crowd may behave competitively…
1 Citations

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## References

SHOWING 1-10 OF 13 REFERENCES

### Statistical fluctuations in pedestrian evacuation times and the effect of social contagion.

• Computer Science
Physical review. E
• 2016
A minimal cellular automaton is developed, with features that afford a semiquantitative reproduction of the experimental microscopic statistics, and it is shown that the simple relation under test may dramatically fail at high contagion strengths.

### Flow of pedestrians through narrow doors with different competitiveness

• Physics
• 2016
It is found that the time lapses between the passage of two consecutive pedestrians display heavy-tailed distributions in all the scenarios studied, and the distribution of burst sizes decays exponentially; this can be linked to a constant probability of finding a long-lasting clog during the evacuation process.

### Origin of the correlations between exit times in pedestrian flows through a bottleneck

• Physics
• 2017
Robust statistical features have emerged from the microscopic analysis of dense pedestrian flows through a bottleneck, notably with respect to the time gaps between successive passages. We pinpoint

### Experimental proof of faster-is-slower in systems of frictional particles flowing through constrictions.

• Physics
Physical review. E, Statistical, nonlinear, and soft matter physics
• 2015
The "faster-is-slower" (FIS) effect was first predicted by computer simulations of the egress of pedestrians through a narrow exit [D. Helbing, I. J. Farkas, and T. Vicsek, Nature (London) 407, 487

### Flow and clogging of a sheep herd passing through a bottleneck.

• Physics
Physical review. E, Statistical, nonlinear, and soft matter physics
• 2015
An experimental study of a flock passing through a narrow door is presented, borrowing concepts from granular physics and statistical mechanics, and the effect of increasing the door size and the performance of an obstacle placed in front of it is evaluated.

### Flow and clogging in a silo with an obstacle above the orifice.

• Physics
Physical review. E, Statistical, nonlinear, and soft matter physics
• 2012
New measurements are presented to analyze different outlet sizes, revealing that the effect of the obstacle is enhanced as the outlet size is increased and a close relationship is suggested between the mean avalanche size and the flow rate fluctuations.

### Guide to safety at sports grounds

Calculating the safe capacity at a sports ground management - the responsibility and planning for safety management, structures, installations and components.