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:: Volume 19, Number 3 ( Summer 2017, 19 (3). 505-711 2017) ::
koomesh 2017, 19(3): 626-633 Back to browse issues page
Determination of noise pollution from motor vehicles in Iran: A cross-sectional study in 2014
Alireza Dehdashti *, Parisa Khosravi, Besharat Zadehabbas
Abstract:   (582 Views)

Introduction: Noise has become a concern for both public and policy makers. This study assessed noise levels produced by various motor vehicles routinely used in Iran.

Materials and Methods: The study design was cross-sectional, which was done in 2014 (Iran). The samples consist of 346 motor vehicles categorized as motorcycles, passenger cars, buses and heavy duty vehicles. Relatively, noise propagated from motor vehicles was measured by a sound level meter with octave band analyzer. Sound pressure levels within octave band frequency surrounding the motor vehicles were determined in static position.

Results: The average sound pressure levels for buses, heavy duty vehicles and motorcycles measured 83 dB(A), 83 dB(A) and 82 dB (A) respectively, were exceeded recommended environmental criteria. Buses had the highest sound pressure levels followed by trucks, motorcycles and passenger cars. Analysis of variance indicated a significant difference between the two groups of motor vehicles used for less than five years and more than five years (p<0.05). We found that old motor vehicles emitted high levels of noise at conversational frequencies. Sound pressure levels for all motor vehicles were increased at higher frequencies of octave band level.

Conclusion: The determination of noise pollution from various motor vehicles should be considered in health researches. Using newer transportation sources can abate traffic noise pollution

Keywords: Pressure level, Motor vehicles, Noise, Transportation Noise
Full-Text [PDF 750 kb]   (73 Downloads)    
Type of Study: Research | Subject: General
Received: 2016/06/4 | Accepted: 2017/02/26 | Published: 2017/06/21
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Dehdashti A, Khosravi P, Zadehabbas B. Determination of noise pollution from motor vehicles in Iran: A cross-sectional study in 2014. koomesh. 2017; 19 (3) :626-633
URL: http://koomeshjournal.semums.ac.ir/article-1-3377-en.html
Volume 19, Number 3 ( Summer 2017, 19 (3). 505-711 2017) Back to browse issues page
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