title: Crowd and environmental management during mass gatherings.
abstract: Crowds are a feature of large cities, occurring not only at mass gatherings but also at routine events such as the journey to work. To address extreme crowding, various computer models for crowd movement have been developed in the past decade, and we review these and show how they can be used to identify health and safety issues. State-of-the-art models that simulate the spread of epidemics operate on a population level, but the collection of fine-scale data might enable the development of models for epidemics that operate on a microscopic scale, similar to models for crowd movement. We provide an example of such simulations, showing how an individual-based crowd model can mirror aggregate susceptible-infected-recovered models that have been the main models for epidemics so far.
authors.affiliation: Centre for Advanced Spatial Analysis, University College London, 90 Tottenham Court Road, London, UK. a.johansson@ucl.ac.uk
authors.forename: Anders
authors.initials: A
authors.lastname: Johansson
authors.forename: Michael
authors.initials: M
authors.lastname: Batty
authors.forename: Konrad
authors.initials: K
authors.lastname: Hayashi
authors.forename: Osama
authors.initials: O
authors.lastname: Al Bar
authors.forename: David
authors.initials: D
authors.lastname: Marcozzi
authors.forename: Ziad A
authors.initials: ZA
authors.lastname: Memish
mesh_terms: D003198:Computer Simulation; D003441:Crowding; D006801:Humans; D008399:Mass Behavior; D008962:Models, Theoretical