| Summary: | This work presents the understanding, development and execution of a computational model, whose main functionality is to analyze the quantity of CO2 emissions related to public transport without tariffs in the municipality of Maricá in the State of Rio de Janeiro, where three scenarios were generated with different percentages of Biodiesel added to mineral Diesel. For the development of the model, the System Dynamics method was used. Mathematically, a System Dynamics model is a system of linear equations. In general, this system is too complex to be solved analytically and, therefore, numerical integration is used. Through Vensim, it was possible to develop, document, simulate and analyze the models, verifying the environmental and social impact caused by the collection in the seven researched lines. As for the implementation in the Vensim simulator (version 2016), historical data were used to verify the integration between the component modules of the model, as well as the results generated, since the outputs produced by the simulation model were evaluated from real data. provided to them. The results were satisfactory and met the expectations of the designers regarding the reduction of the environmental impact in the increase of Biodiesel to mineral Diesel.
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