Investigation of the influence of carburetor motorcycles replacement by electrically charged motorcycles due to lez implementation on Theran air quality

Tehran air pollution is a severe environmental concern. Different policies and solutions are pursued to control the pollutants level and thus to improve the air quality level. Some of the policies include traffic restrictions that create a serious challenge for citizens and some of them are related to substituting the old fleet generation by newer ones from the aspect of environmental criteria. Low Emission Zone (LEZ) is a well-known environmental policy by which traffic of specific category of vehicles within a predetermined region is banned. In this study the influence of Tehran LEZ implementation, in which traffic of carburettor motorcycles is banned and just electrically charged ones can enter the LEZ region, is investigated. Tehran Air Pollution Forecasting system (apfs.tehran.ir) was used for impact evaluation of this policy on Tehran air quality in the period of 12 to 31 December which was the longest polluted episode in 2015.