University of Tehran

Study on traffic noise level of sylhet by multiple regression analysis associated with health hazards

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Noise is unacceptable level of sound that creates annoyance, hampers mental and physical peace, and may induce severe damage to the health. Along with the increasing degree of air and water pollution, noise pollution is also emerging as a new threat to the inhabitants of Sylhet City. Exposure to high level of noise may cause severe stress on the auditory and nervous system of the city dwellers, particularly the children. Motorized traffic is one of the major sources of noise pollution in urban areas. Frequent exposure to high level of noise hampers physical and mental peace and may cause damage to the health. Along with the increasing degree of air and water pollution, the inhabitants of Sylhet City are being exposed to high level of noise pollution. The level of noise pollution is very closely related with urbanization and motorization. Although there are many sources of noise, which include industries, construction works and indiscriminate use of loud speakers, motorized traffic is the principal source of creating noise in urban areas. During the 70s and early 80s, noise pollution was not a major concern for the dwellers of Sylhet City. With the increase of in the number of motorized vehicles in the city, the hazard of noise pollution has increased and exceeded the level of tolerance. Exposure to high level of noise causes severe stress on the auditory and nervous system. Das (2001) reported that the hearing ability of the inhabitants of the City has reduced during the last ten years. About five to seven percent of the patients admitted to the Sylhet Osmani Medical College are suffering from permanent deafness due to noise pollution (Ahmed, 1998). Disturbances created by noise may cause hypertension, headache, indigestion, peptic ulcer, pharyngitis, atherosclosis, bradycardia and ectopic beat (Papacostas and Prevedouros, 1993; Kadiyali, 1997). The paper aims at studying the level of noise pollution in Sylhet City and analyzing its level of severity. It analyses durinal variation of noise near the roadside and its relationship with traffic volume

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