Evacuation Models are Running out of Time

P Thompson, D Nilsson, D McGrath, K Boyce

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

The representation of crowd movement in existing evacuation models is typically based on data collected in the 1950s to 1980s, i.e., data that are more than 40 years old. Since the 1970s, population characteristics have changed dramatically around the world. Reports show that the percentage of elderly and obesity rates have increased significantly and this trend is predicted to continue into the future. Recent research [1–3] illustrates the magnitude by which different age cohorts of a population group can reduce the general speed and flow rates. In addition, well established studies have quantified the impact of body dimensions on speed and flow [4]. However, many existing evacuation models fail to take the changing characteristics of populations into account. This paper aims to review existing knowledge of population demographics and crowd dynamics, derive an indicative flow reduction factor for future populations, and consider the implications for computer models and building design in the future.
Original languageEnglish
Pages (from-to)251-261
JournalFire Safety Journal
Volume78
DOIs
Publication statusPublished - Nov 2015

Bibliographical note

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Keywords

  • evacuation
  • ageing
  • obesity
  • demographics
  • flows

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