Document Detail


Pressure variations on a train - Where is the threshold to railway passenger discomfort?
MedLine Citation:
PMID:  22884634     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The implementation of recent guidelines for tunnel construction in Germany leads to extended air pressure variations inside trains and reduces pressure comfort for railway passengers. A questionnaire survey with 262 passengers revealed that pressure variations are rated less important for riding comfort than climatic and spatial aspects (study 1). A laboratory experiment (study 2) in the pressure chamber at the DLR Institute of Aerospace Medicine with 31 subjects (mean age = 37.7, SD = 12.7; 51.6% male) investigated the effects of systematic pressure variations on discomfort. The pressure changes (pressure increases and decreases) ranged from 1 to 100 mbar and were realized within 1-100 s. We derived thresholds for healthy passengers by means of random effects linear and logistic regression analysis. Logistic dose-response curves revealed amplitude/time combinations leading to a certain percentage of passengers perceiving discomfort (e.g. 50% dissatisfied passengers regarding a pressure increase of approximately 30 mbar within 5 s). The findings may help design engineers to meet passengers' comfort requirements.
Authors:
Sandra Schwanitz; Martin Wittkowski; Vinzent Rolny; Mathias Basner
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-8-9
Journal Detail:
Title:  Applied ergonomics     Volume:  -     ISSN:  1872-9126     ISO Abbreviation:  Appl Ergon     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-8-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0261412     Medline TA:  Appl Ergon     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier Ltd and The Ergonomics Society. All rights reserved.
Affiliation:
German Aerospace Center (DLR), Institute of Aerospace Medicine, Department of Flight Physiology, Linder Höhe, 51147 Cologne, Germany.
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