Abstract:In order to calculate the emission of mountain cities under sloping terrain, the research status and trend of road emission measurement at home and abroad are analyzed from three aspects: the quantitative method of road network for emission, the quantitative method of vehicle emission and the quantitative parameters of coupling traffic and emission. On this basis, combined with the special terrain of mountain cities, the research status and trend of road emission measurement at home and abroad are analyzed. Based on the analysis of the impact of emissions, the present situation and shortcomings of road emission measurement in mountainous cities are analyzed: the statistical size of emission model is beginning to refine, there is no corresponding model in mountainous cities, and there is no operational mode distribution model for the actual operation status of intersections.