![]() Noise is a common problem in urban areas as compared to the villages because of the mechanization and more vehicles on the road. Noise affects people so badly that at some places policy makers were compelled to said that there should be restrictions on noisy vehicles for reducing noise pollution as in New Delhi, India and Guangzhou district, China. All above mentioned types of noise are dangerous to human and animals if their limits are exceeded. Noise has different types including impulsive noise, continuous noise, intermittent noise and low frequency noise. A vehicular noise is the resultant of the vibrating body of the vehicle plus its engine operating sound. A sound is termed as noise when it becomes continuous and above the threshold limits of the ears.
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