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A tunnel evacuation experiment on movement speed and exit choice in smoke

Ronchi, Enrico LU ; Fridolf, Karl LU ; Frantzich, Håkan LU ; Nilsson, Daniel LU ; Walter, Anders Lindgren and Modig, Henric (2017) In Fire Safety Journal
Abstract

In order to increase the knowledge on human behaviour in smoke, an evacuation experiment was performed in a road tunnel in Stockholm in July 2014. Sixty-six participants, who were instructed to individually evacuate the tunnel, took part. Participants' walking speeds were measured in a smoke-filled section, as well as in a smoke-free section, of the tunnel. The walking speeds in non-irritant smoke were measured for extinction coefficients in the range of 0.5-1.1 m-1, which corresponds to approximately 2-4 m of visibility (for light reflecting signs). In addition, way-finding and exit choice in smoke were also investigated. Particularly, different emergency exit portal designs were evaluated in the smoke-filled section of the... (More)

In order to increase the knowledge on human behaviour in smoke, an evacuation experiment was performed in a road tunnel in Stockholm in July 2014. Sixty-six participants, who were instructed to individually evacuate the tunnel, took part. Participants' walking speeds were measured in a smoke-filled section, as well as in a smoke-free section, of the tunnel. The walking speeds in non-irritant smoke were measured for extinction coefficients in the range of 0.5-1.1 m-1, which corresponds to approximately 2-4 m of visibility (for light reflecting signs). In addition, way-finding and exit choice in smoke were also investigated. Particularly, different emergency exit portal designs were evaluated in the smoke-filled section of the tunnel. The novel data-set on walking speed in smoke is presented, including coupled data on obstructed (movement in smoke) and unobstructed (smoke-free movement) walking speed. Results show that there is a weak relationship between an individual's ability to walk in smoke and the unobstructed walking speed, but more research is needed in this area. In addition, the results relating to way-finding and exit choice demonstrated that the emergency exit portal design in the experiments was appropriate for the intended use. However, in order to increase the performance of the design, the portal may be complemented with information signs on the wall opposite to the exit, namely way-finding signs including distances to the closest emergency exits on both tunnel walls, and a loudspeaker installation that can inform evacuees about the location of available exits.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
epub
subject
keywords
Design, Emergency exit, Evacuation, Exit choice, Experiment, Human behaviour in fire, Road tunnel, Smoke, Walking speed
in
Fire Safety Journal
publisher
Elsevier
external identifiers
  • scopus:85020809743
ISSN
0379-7112
DOI
10.1016/j.firesaf.2017.06.002
language
English
LU publication?
yes
id
17437f4a-f8e4-4e46-860f-2a1c4336cfca
date added to LUP
2017-07-05 11:00:22
date last changed
2017-07-05 11:00:22
@article{17437f4a-f8e4-4e46-860f-2a1c4336cfca,
  abstract     = {<p>In order to increase the knowledge on human behaviour in smoke, an evacuation experiment was performed in a road tunnel in Stockholm in July 2014. Sixty-six participants, who were instructed to individually evacuate the tunnel, took part. Participants' walking speeds were measured in a smoke-filled section, as well as in a smoke-free section, of the tunnel. The walking speeds in non-irritant smoke were measured for extinction coefficients in the range of 0.5-1.1 m<sup>-1</sup>, which corresponds to approximately 2-4 m of visibility (for light reflecting signs). In addition, way-finding and exit choice in smoke were also investigated. Particularly, different emergency exit portal designs were evaluated in the smoke-filled section of the tunnel. The novel data-set on walking speed in smoke is presented, including coupled data on obstructed (movement in smoke) and unobstructed (smoke-free movement) walking speed. Results show that there is a weak relationship between an individual's ability to walk in smoke and the unobstructed walking speed, but more research is needed in this area. In addition, the results relating to way-finding and exit choice demonstrated that the emergency exit portal design in the experiments was appropriate for the intended use. However, in order to increase the performance of the design, the portal may be complemented with information signs on the wall opposite to the exit, namely way-finding signs including distances to the closest emergency exits on both tunnel walls, and a loudspeaker installation that can inform evacuees about the location of available exits.</p>},
  author       = {Ronchi, Enrico and Fridolf, Karl and Frantzich, Håkan and Nilsson, Daniel and Walter, Anders Lindgren and Modig, Henric},
  issn         = {0379-7112},
  keyword      = {Design,Emergency exit,Evacuation,Exit choice,Experiment,Human behaviour in fire,Road tunnel,Smoke,Walking speed},
  language     = {eng},
  month        = {06},
  publisher    = {Elsevier},
  series       = {Fire Safety Journal},
  title        = {A tunnel evacuation experiment on movement speed and exit choice in smoke},
  url          = {http://dx.doi.org/10.1016/j.firesaf.2017.06.002},
  year         = {2017},
}