Pulse rate, pulse pattern, and onset distance effects on subject braking responses while using an auditory collision warning signal

dc.contributor.authorPizarro, David Victoren
dc.contributor.committeechairPrice, Dennis L.en
dc.contributor.departmentIndustrial and Systems Engineeringen
dc.date.accessioned2014-03-14T21:27:22Zen
dc.date.adate2009-01-17en
dc.date.available2014-03-14T21:27:22Zen
dc.date.issued1994en
dc.date.rdate2009-01-17en
dc.date.sdate2009-01-17en
dc.description.abstractThis study examined the effect that pulse rate, pulse pattern, and onset distance had on the performance of an auditory warning signal. The warning signal's purpose was to alert mobile crane operators of their proximity to overhead power lines. The study consisted of two experimental phases. The first phase consisted of three sections; A) development and construction of the PWD's auditory warning signal. B) development of the experimental tasks and a pilot study, and C) an examination of the workload level of the secondary tracking task. Phase two consisted of a full factorial experiment which examined the performance effects caused by pulse rate range, pulse pattern, and onset distance manipulations. The experimental task required subjects to monitor an auditory warning system while simultaneously operating a single-axis driving simulation task. Subjects were required to initiate braking responses based on the information conveyed through the auditory collision warming system. In addition, subjective ratings were obtained to compare subjects’ actual performance using the warning system to their subjective preferences. Results indicate that subjects performed optimally under warning signals with moderate onset distances and low pulse rates. The pulse pattern did not have a large impact on subjects' performance across the various warning signals. Overall, it was concluded that a pulsing auditory warning signal comprised of a moderate onset distance and low pulse rate was subjectively preferred and would work effectively as a proximity warning device for mobile cranes.en
dc.description.degreeMaster of Scienceen
dc.format.extentix, 158 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-01172009-063456en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-01172009-063456/en
dc.identifier.urihttp://hdl.handle.net/10919/40655en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1994.P537.pdfen
dc.relation.haspartfloppy1.tgzen
dc.relation.isformatofOCLC# 31594014en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1994.P537en
dc.subject.lcshCranes, derricks, etc -- Safety appliancesen
dc.subject.lcshIndustrial safetyen
dc.subject.lcshSignals and signalingen
dc.titlePulse rate, pulse pattern, and onset distance effects on subject braking responses while using an auditory collision warning signalen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineIndustrial and Systems Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen
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