Title : MODELING OF URBAN TRAFFIC NOISE
Authors : R. Kalaiselvi (1) and A. Ramachandraiah (2)
Publication : February 13-16, 2013
Volume :
Pages : 11-Jan
Price : 250
Abstract : Study of noise pollution associated with larger cities is a topic of current research. Such studies enable one to see the growth and sustainability. Noise due to transportation infrastructure poses a formidable challenge to the environmentalist. From a sustainability viewpoint it is very important to contain noise levels. In a city like Chennai significant structural changes have occurred due to the rapid growth in the number of motor vehicles, expansions of road network, industrialization and urbanization. These modifications led to a change in the resulting noise levels associated with the city. This paper describes a methodology to model urban road traffic noise in terms of noise mapping. It describes the information sources that are used, the computer software systems, the data processing, challenges and the results obtained. A noise map is a scientific tool for visualizing the impact of noise. Noise mapping enables one to establish the soundscape of the urban environment. It enables one to calculate the number of persons exposed to noise. Chennai road traffic noise map has been developed by collecting and inputting data such as speed and flow of traffic, the locations and shape of buildings and the profile of the ground, using specialized noise prediction software (SoundPLAN). It is observed from the mapping study that soundscape of the Chennai city ranges from 48 dB(A) to 85 dB(A) Lden and the details are explained in paper.