Noise Propagation Control Measures and Prediction of Their Effects on Road Traffic Noise

Road traffic noise is one of serious impacts which are generated from road network. In order to keep moderate sound environment in crowded and busy cities, noise mitigation measures are important. In Japan, advanced noise control technologies have been developed on basis of experience of serious pollution issues in 1960s and 1970s. In this report, noise control technologies developing in Japan is firstly described and advanced researches on noise reduction and noise prediction against road traffic will be introduced.