A systematic literature review on research and progress of road traffic soundscape

The rapid development of road traffic generates extreme noise pollution. The current development trend from noise control by simply reducing the noise level to overall soundscape design has brought revolutionary progress in the field of road traffic sound environment. This paper reviews the current situation of road traffic soundscape research. First, it systematically analyzes the development trend and hot keywords of road traffic soundscape and its related literature with the bibliometric method. It compares the development history of the road traffic soundscape from many aspects, such as concept, research framework and model, research method. It summarizes the research hotspots of road traffic sound landscape. Secondly, from the road traffic soundscape negative design (eliminating the existing bad soundscape as the basis) and positive design (creating a harmonious sound environment), the application and research on road traffic sound landscape are reviewed. A relatively complete set of road traffic sound landscape design methods is explored to create a good audio-visual context along the road, enhance and improve people's audio-visual comfort, and meet people's audio-visual feelings and health. Finally, the current situation and challenges of existing research are systematically summarized, and the future development direction and research trends of road traffic sound landscape are analyzed from standardized research system innovation, effective combination of research and practice, and exploration of quantitative design methods.