Evacuation characteristics of visually impaired people

a qualitative and quantitative study

Janne Gress Sørensen, Anne Dederichs

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Evacuation characteristics for blind and visually impaired people are presented in the current study. The study was carried out in 2011 and engaged 40 participants in the age from 10 to 69 years. The participants had impairments for all of the four Danish categories for visual impairments (A-D). The mean free walking speed descending stairs for category C and D were found to be comparable with values found in Danish and Swedish guidelines. The walking speed of people with visible impairments was not affected by an increasing density on stairs to the same extent as the walking speed of able-bodied adults. It was found that people with visual impairments were able to uphold a higher walking speed descending stairs than able-bodied adults for increasing person density. The initial walking speed on horizontal planes is lower than the value suggested by the N&M-model. The horizontal mean free walking speed depends on the degree of vision loss. The design of the building environment is important for the ability to orientation for people with reduced sight. Walls and handrails are important for the orientation possibilities for people with visual impairments. Furthermore, obstacles placed in the egress path were identified problematic for this group of people.
Original languageEnglish
JournalFire and Materials
Volume39
Issue number4
Pages (from-to)385-395
ISSN0308-0501
DOIs
Publication statusPublished - 2015

Keywords

  • Evacuation
  • Visually impairment
  • Walking speed
  • Human behaviour
  • Stairs
  • Horizontal plane

Cite this

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title = "Evacuation characteristics of visually impaired people: a qualitative and quantitative study",
abstract = "Evacuation characteristics for blind and visually impaired people are presented in the current study. The study was carried out in 2011 and engaged 40 participants in the age from 10 to 69 years. The participants had impairments for all of the four Danish categories for visual impairments (A-D). The mean free walking speed descending stairs for category C and D were found to be comparable with values found in Danish and Swedish guidelines. The walking speed of people with visible impairments was not affected by an increasing density on stairs to the same extent as the walking speed of able-bodied adults. It was found that people with visual impairments were able to uphold a higher walking speed descending stairs than able-bodied adults for increasing person density. The initial walking speed on horizontal planes is lower than the value suggested by the N&M-model. The horizontal mean free walking speed depends on the degree of vision loss. The design of the building environment is important for the ability to orientation for people with reduced sight. Walls and handrails are important for the orientation possibilities for people with visual impairments. Furthermore, obstacles placed in the egress path were identified problematic for this group of people.",
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Evacuation characteristics of visually impaired people : a qualitative and quantitative study. / Sørensen, Janne Gress; Dederichs, Anne.

In: Fire and Materials, Vol. 39, No. 4, 2015, p. 385-395.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Evacuation characteristics of visually impaired people

T2 - a qualitative and quantitative study

AU - Sørensen, Janne Gress

AU - Dederichs, Anne

PY - 2015

Y1 - 2015

N2 - Evacuation characteristics for blind and visually impaired people are presented in the current study. The study was carried out in 2011 and engaged 40 participants in the age from 10 to 69 years. The participants had impairments for all of the four Danish categories for visual impairments (A-D). The mean free walking speed descending stairs for category C and D were found to be comparable with values found in Danish and Swedish guidelines. The walking speed of people with visible impairments was not affected by an increasing density on stairs to the same extent as the walking speed of able-bodied adults. It was found that people with visual impairments were able to uphold a higher walking speed descending stairs than able-bodied adults for increasing person density. The initial walking speed on horizontal planes is lower than the value suggested by the N&M-model. The horizontal mean free walking speed depends on the degree of vision loss. The design of the building environment is important for the ability to orientation for people with reduced sight. Walls and handrails are important for the orientation possibilities for people with visual impairments. Furthermore, obstacles placed in the egress path were identified problematic for this group of people.

AB - Evacuation characteristics for blind and visually impaired people are presented in the current study. The study was carried out in 2011 and engaged 40 participants in the age from 10 to 69 years. The participants had impairments for all of the four Danish categories for visual impairments (A-D). The mean free walking speed descending stairs for category C and D were found to be comparable with values found in Danish and Swedish guidelines. The walking speed of people with visible impairments was not affected by an increasing density on stairs to the same extent as the walking speed of able-bodied adults. It was found that people with visual impairments were able to uphold a higher walking speed descending stairs than able-bodied adults for increasing person density. The initial walking speed on horizontal planes is lower than the value suggested by the N&M-model. The horizontal mean free walking speed depends on the degree of vision loss. The design of the building environment is important for the ability to orientation for people with reduced sight. Walls and handrails are important for the orientation possibilities for people with visual impairments. Furthermore, obstacles placed in the egress path were identified problematic for this group of people.

KW - Evacuation

KW - Visually impairment

KW - Walking speed

KW - Human behaviour

KW - Stairs

KW - Horizontal plane

U2 - 10.1002/fam.2200

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VL - 39

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