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In the process of environmental noise mitigation, many institutions have recommended several methodologies and strategies like noise mapping, sound level measurement and soundscape approach. European directive 2002 provides a set of guidelines to reduce environmental noise, which is being recognized in various countries for various urban development projects. In Indian perspective, proper guidelines have not yet been developed, but National building code India (NBC) and Central Pollution Control Board (CPCB) provide certain guidelines for building up proper environmental noise condition. The research proposes to explain the process of noise mapping and prediction strategies and its effect on urban morphology. It helps to understand the importance of forecasting traffic noise levels and its application in the urban planning process, in order to lower the effect of noise pollution at urban scale. A case of Roorkee city in Uttarakhand state is considered for the analysis. The growth of Roorkee city has been boosted by the presence of National Highway (NH-58) passing through city center. But due to increase in travel demand various issues like noise and air pollution has become a major issue. The study reveals the current noise climate scenario of city and also predicts the noise levels with increased travel demand and population growth. It also explains the significance of physical characteristics of the urban shape, such as construction density, physical position of buildings and the existence of open spaces, on environmental noise propagation. Three different scenarios of noise level distributions were simulated for traffic noise on and its impact on adjacent areas was analysed. The first scenario was based on review of current noise propagation pattern in the study area. The second scenario involves analysis of noise climate in compact and high-density area with regularized spatial planning process. Third scenario explains about the effect of vegetation and compact planning process for noise attenuation. The overall picture revealed that the road traffic noise is more than the recommended standard and it is required to reduce the noise level by implementing noise mitigation strategies at the urban planning level. This study evaluates different layers of information received from noise maps and soundscape analysis which helps to develop noise mitigation option for different cities as well. The study can be used as a tool for town planning agencies and transport planners to decide the location of various land use and for locating noise-sensitive zones.
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