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Comparison of whole-body vibration exposures in buses: effects and interactions of bus and seat design

Journal article
Authors Per Jonsson
Patrik Rynell
Mats Hagberg
P.W. Johnson
Published in Ergonomics
Volume 58
Issue 7
Pages 1133-1142
ISSN 0014-0139
Publication year 2015
Published at Institute of Medicine, School of Public Health and Community Medicine
Institute of Medicine
Pages 1133-1142
Language en
Keywords European Vibration Directive , ISO 2631-1 , low back pain , SEAT , Seat Effective Amplitude Transmissibility , WBV
Subject categories Family Medicine, Other Medical Sciences


© 2014 Taylor & Francis Bus and seat design may be important for the drivers' whole-body vibration (WBV). WBV exposures in buses during actual operation were assessed. WBV attenuation performance between an air-suspension seat and a static pedestal seat in low-floor buses was compared; there were no differences in WBV attenuation between the seats. Air-suspension seat performance in a high-floor and low-floor bus was compared. Relative to the pedestal seat with its relatively static, limited travel seat suspension, the air-suspension seat with its dynamic, longer travel suspension provided little additional benefit. Relative to the measurement collected at the bus floor, the air-suspension seat amplified the WBV exposures in the high-floor bus. All WBV exposures were below European Union (EU) daily exposure action values. The EU Vibration Directive only allows the predominant axis of vibration exposure to be evaluated but a tri-axial vector sum exposure may be more representative of the actual health risks.

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