Study on Traffic Noise Map of Old City Zone in Increasing Modern City in China

This paper proposes a new kind of traffic noise analysis method based on the extensive traffic noise data obtained from Huidong county, Guangdong province of China. Plane traffic noise maps are made by a traditional method and compared with the real noise distribution. The results indicate that they do not match in the old city zone. In addition; integrated with factors such as acoustic characteristics, streets' shape, and building heights; CadnaA software was employed to determine the plane traffic noise distribution. Field investigations revealed the reasons why some zones in the city were not usual. Finally, conclusions and suggestions were made to reduce the deflections of noise distribution to make proper linear relationship between simulated noise data and in-situ noise data in the old city zone.