Passenger Noise and Whole-Body Vibration Exposure—A Comparative Field Study of Commercial Buses

Public transport services, particularly bus services, play an important role in a sustainable transportation system. However, despite various efforts, bus ridership has decreased. The appearance of shared and on-demand vehicle services is one of the main reasons for this issue. In addition, bus tourism services have been successfully developed to meet the exigent needs of tourists. Therefore, a new level of daily bus service is necessary to adapt to the changing demands of customers. Bus interaction (BI) plays an important role in bus services. Nevertheless, the conventional concept of BI mainly refers to users, physical interaction, and safety, but it does not address non-users, non-physical interactions, service quality, and other aspects. This study aims to elaborate on a new concept of bus services. Based on this, we developed a theoretical framework for BI. A meta-analysis was then conducted to identify the achievements and untouched aspects. The results of this study provide three main contributions. First, an unprecedented novel concept of BI is defined, including 13 types of interactions. Second, a comprehensive theoretical framework of BI is established based on the relationships between eight sustainable bus system sub-aspects and 13 BI types. Third, based on the theoretical framework and findings of the reviewed studies, a common finding comprehensive framework of BI is completed, which is accompanied by 1) key findings of the 13 BI types, 2) conclusions of traffic conditions affecting BI research, 3) BI research gaps, and 4) 16 main suggestions for future BI research.

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“…Passenger seats, engine, and wheels of a bus are major sources of vibration inside buses [84] Iran, 2014…”

Section: Quality Of Servicementioning

confidence: 99%

Shaping a New Level of Bus Service under a Novel Concept of Bus Interaction: A Meta-Review

Van-Huy¹,

Kikuchi²,

Hisashi³

2023

JTTs

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“…Noise is majorly created by the engine, gear, pedal, accelerator and breaks. (Nassiri, Ebrahimi, Monazzam, Rahimi, & Shalkouhi, 2014;Nadri, et al, 2012). It was also found that the engine and wheels are the major sources of noise inside the buses (Nassiri, Ebrahimi, Monazzam, Rahimi, & Shalkouhi, 2014).…”

Section: Sources Of Noise In Busmentioning

confidence: 99%

International Symposium on Occupational Safety and Hygiene: Proceedings Book of the SHO2016

2013

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A Sociedade Portuguesa de Segurança e Higiene Ocupacionais realiza, em 23 e 24 de março de 2016, a 11ª edição do Colóquio Internacional de Segurança e Higiene Ocupacionais - SHO 2016. Tal como nos dez últimos anos, o evento tem lugar no Auditório Nobre da Escola de Engenharia da Universidade do Minho, em Guimarães. A edição de 2016 abrange as temáticas da Ergonomia e do Ambiente Físico, dos Riscos Químicos e Biológicos, da Segurança contra Incêndio e da Gestão da Prevenção, que são objeto de sessões plenárias, decorrendo ainda várias sessões paralelas de comunicações livres e apresentação de posters.

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“…Vehicle ride comfort is one of the important performance parameters determining the desirability and marketability of an automobile. The ride comfort analysis and prediction is an active research area; there has been considerable work (for example, see the literature 7–14 ) towards understanding ride comfort in terms of vibration perception, road inputs, dynamic behaviour of vehicle suspension components and also the human body dynamics. The aim has been to develop reliable virtual prototypes so as to reduce reliance of expensive physical prototype trials.…”

Section: Introductionmentioning

confidence: 99%

Experimentally validated dynamic results of a relaxation-type quarter car suspension with an adjustable damper

Thite

Coleman

Doody

et al. 2017

Journal of Low Frequency Noise, Vibration and Active Control

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Models of varying degree of sophistication are used in vehicle dynamic studies. For ride comfort, Kelvin–Voigt arrangement is preferred and for impact harshness analysis, a relaxation-type suspension model, Zener or Maxwell type is used. The nonconsideration of relaxation-type models in ride comfort studies can result in significant errors for frequencies below ∼30 Hz. The object of the paper is to show the influence of the series stiffness on the effective suspension damping both experimentally and numerically. A frequency domain analysis of two-degree of freedom Zener quarter car model is performed to find the complex relation between effective damping coefficient and the limiting value of damping ratio for a given series stiffness. The nonlinear relation between shock absorber damping and the natural frequencies is clearly illustrated. A novel four-post rig set-up is used to validate the results by measuring transmissibilities, giving damping ratios for varying shock absorber settings. A closed form solution, based on a simplified partial model, of optimal damping coefficient, which is a nonlinear function of stiffnesses, shows good agreement with numerical simulations of the complete system. The nonlinearities in shock absorbers also influence the outcome. These findings can be a great value at early design stage.

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Passenger Noise and Whole-Body Vibration Exposure—A Comparative Field Study of Commercial Buses

Cited by 10 publications

References 24 publications

Shaping a New Level of Bus Service under a Novel Concept of Bus Interaction: A Meta-Review

Shaping a New Level of Bus Service under a Novel Concept of Bus Interaction: A Meta-Review

International Symposium on Occupational Safety and Hygiene: Proceedings Book of the SHO2016

Experimentally validated dynamic results of a relaxation-type quarter car suspension with an adjustable damper

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