Vulnerability of bus and truck drivers affected from vehicle engine noise

Mondal, Naba Kumar; Dey, Madhumita; Datta, Jayanta Kumar

doi:10.1016/j.ijsbe.2014.10.001

Cited by 14 publications

(3 citation statements)

References 20 publications

(22 reference statements)

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“…A similar study by Mondal et al . [ 14 ] in West Bengal found that the noise level inside the buses’ cabin was in the range of 88.6–102.4 dB. Therefore, this study and similar studies indicate that the noise level inside the buses is well above the recommended standards.…”

Section: Discussionsupporting

confidence: 70%

Noise level inside sri lanka transport board buses and hearing impairment of long- and short-distance bus drivers of ampara and Batticaloa Districts, Sri Lanka

Shanmugarajah¹,

Wijesinghe

2022

Indian J Community Med

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Background: Transport drivers are more vulnerable to hearing impairment due to the traffic environment and fast-growing urbanization. Objective: The study aims to determine the noise level inside the Sri Lanka Transport Board (SLTB) buses, hearing impairment of state transport bus drivers, and its associated factors in the selected districts of Eastern Province, Sri Lanka. Materials and Methods: A cross-sectional descriptive study was carried out among 256 state bus drivers using a systematic sampling technique. A screening tool to assess the level of hearing impairment of drivers and a format to measure equivalent noise level inside the SLTB buses were used to collect data. Noise measurement was done using Benetech Sound Level Meter (Model DB 130). Results: With reference to the noise level inside buses, 88.4% ( n = 53) exceeded 85 dB (A), and 21.7% of buses ( n = 13) were above 90 dB (A). According to the hearing tool's hearing impairment assessment, the hearing of the majority of the study participants (84.4%, n = 216) was not affected. The association between hearing impairment and past history of ear diseases, surgeries, or head trauma was statistically significant ( P = 0.017). Conclusions: Noise level inside the SLTB buses in Ampara and Batticaloa districts exceeded the 85 dB limit prescribed under the WHO standards of occupational noise exposure. The years of service of a bus was the only factor shown a statistically significant association with the level of noise inside the bus.

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Section: Discussionsupporting

confidence: 70%

Noise level inside sri lanka transport board buses and hearing impairment of long- and short-distance bus drivers of ampara and Batticaloa Districts, Sri Lanka

Shanmugarajah¹,

Wijesinghe

2022

Indian J Community Med

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“…year, the level of the internal noise in the driver's space zone of 88.6÷102.4 dB was measured. As many as 65% of the surveyed drivers had been diagnosed with some the health problems caused by noise [6].…”

Section: Literature Rewiewmentioning

confidence: 99%

Measurement noise level of E-bus HIGER KLQ6125GEV3 on the polygon

Misanovic¹,

Taranović

Maljković

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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Buses for public city transport in cities represent a significant source of noise, especially in the central city zones, on the traffic corridors with the highest hourly frequencies of public transport vehicles. The introduction of electric buses is one of the possible ways to reduce noise. The paper will present the results of the experimental measurement of noise levels of e-bus Higer KLQ6125GEV3 on the polygon, using the Lutron SL-4001 measuring instrument, following UN ECE 51.02 regulations and a comparison with the results of noise levels measurement with buses on diesel and CNG driveline.

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“…For some small high-speed machines and some other large turbochargers, the induction noise can reach up to 5 dB (A) higher than the engine noise sometimes (Chiatti et al 2015 ). Therefore, it is of great significance to find an approach to control induction noise (Mondal et al 2014 ).…”

Section: Introductionmentioning

confidence: 99%

Modeling and experimental verification of a new muffler based on the theory of quarter-wavelength tube and the Helmholtz muffler

Chen

et al. 2016

SpringerPlus

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To address the problem of low frequency noise of the internal combustion engine, several existing muffler design methods, such as the theory of the quarter-wavelength tube and the Helmholtz muffler, were examined and compared. This paper proposes a new type of muffler design method, which has the advantages of both the quarter-wavelength tube and the Helmholtz muffler. An example is carried out to illustrate the analysis of original signal, the design of the new muffler and the improvement of the in-car noise. The transmission loss of the new muffler is studied by theoretical method and finite element method. The vehicle test of the new muffler demonstrates excellent performance with a wider noise elimination frequency band and smaller radial size.

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Vulnerability of bus and truck drivers affected from vehicle engine noise

Cited by 14 publications

References 20 publications

Noise level inside sri lanka transport board buses and hearing impairment of long- and short-distance bus drivers of ampara and Batticaloa Districts, Sri Lanka

Noise level inside sri lanka transport board buses and hearing impairment of long- and short-distance bus drivers of ampara and Batticaloa Districts, Sri Lanka

Measurement noise level of E-bus HIGER KLQ6125GEV3 on the polygon

Modeling and experimental verification of a new muffler based on the theory of quarter-wavelength tube and the Helmholtz muffler

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