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dc.contributor.authorZhang, N-
dc.contributor.authorFard, M-
dc.contributor.authorXu, J-
dc.contributor.authorDavy, J L-
dc.contributor.authorRobinson, S R-
dc.identifier.citationApplied Ergonomics 2023-10-07; 114en_US
dc.description.abstractDriver drowsiness is a factor in at least 20% of serious motor vehicle accidents. Although research has shown that Whole-Body Vibration (WBV) can induce drowsiness in drivers, it is unknown whether particular frequencies are more problematic. The present study systematically investigated the influence of WBV frequency on driver drowsiness. Fifteen participants each undertook six 1-h sessions of simulated driving while being subjected to WBV of either 0 Hz (no vibration), 1-4 Hz, 4-8 Hz, 8-16 Hz, 16-32 Hz or 32-64 Hz. Subjective sleepiness, as measured by the Karolinska Sleepiness Scale (KSS), confirmed that drivers felt drowsier when exposed to the two lowest frequency ranges (1-4 Hz and 4-8 Hz). Reaction time, which measures attention and alertness, was significantly impaired by the two lowest frequency ranges. Objective driving performance measures (Standard Deviation of Lane Position (SDLP), Standard Deviation of (SD) Steering Angle, Time in Unsafe Zone) also showed significant degradation due to exposure to the two lowest frequency ranges. Exposure to 1-4 Hz or 4-8 Hz vibration caused attention to become significantly impaired within 15-20 min and driving performance to be significantly impaired by 30-35 min. The other frequency ranges had little or no effect. These findings point to a need to develop equivalent vibration-induced drowsiness contours that can be adopted as transportation safety standards.en_US
dc.subjectEquivalent drowsiness contoursen_US
dc.subjectMotor vehicle designen_US
dc.subjectSteering angleen_US
dc.subjectWhole-body vibrationen_US
dc.titleRoad safety: The influence of vibration frequency on driver drowsiness, reaction time, and driving performance.en_US
dc.typeJournal Articleen_US
dc.identifier.journaltitleApplied Ergonomicsen_US
dc.identifier.affiliationSchool of Engineering, RMIT University, Australia.en_US
dc.identifier.affiliationSchool of Engineering, RMIT University, Australia.en_US
dc.identifier.affiliationSchool of Science, RMIT University, Australia; Infrastructure Technologies, CSIRO, Australia.en_US
dc.identifier.affiliationSchool of Health and Biomedical Sciences. RMIT University, Australia.en_US
dc.identifier.affiliationInstitute for Breathing and Sleepen_US
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item.openairetypeJournal Article-
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