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International experience shows that the incorporation of clean fuels has a positive effect that directly affects the emissions of PM, SO2 and other polluting gases, both in new vehicles, and in use. This effect is obtained from the moment it improves the environmental quality of fuels. However, an additional and long-term effect is obtained by introducing vehicles with new technologies, which significantly reduce these pollutants.
Therefore, it is necessary to estimate the benefits of the introduction of cleaner fuels and technologies, for which the development of an inventory of vehicular emissions is one of the tools used. In general, there are two methodologies for the development of inventories of emission, which vary according to the type of base information and the purpose of it:
In the present study, an inventory of Bottom-up emissions was developed georeferenced of public transport in Metropolitan Lima. The intention is to estimate in which sectors of the city emit more pollutants and with this, perform different scenarios technologies to visualize changes in polluting emissions.
It is important to highlight the approval of the Urban Transport Authority for Lima Metropolitana, an autonomous entity that coordinates transport in the provinces of Lima and Callao, and whose main function is "to provide the best service to citizens, within a framework of sustainability economic, environmental and road safety "(Congress of the Republic, Peru, 2018). Therefore, the results of this report could be an important input for this new metropolitan authority.