Different economic sectors interact with each other and contribute in increasing CO2 emissions in different ways and with different intensities. A modeling framework describing CO2 cross-sectoral dependencies could be fruitful to authorities providing guidance to policies on emissions regulations and environment preservation.
When it comes to simulate traffic emissions, problems arise: which is the best model to use, which data are needed and whether they are all available, whether the process is time-consuming and/or calls for expert, etc. It is not surprising, then, that public transport operators might be hesitant in estimating the emission package of the bus fleets they manage.
Environmental issues are an imperative concern for bus companies. But, when it comes to estimating pollutant emissions, problems arise, typically: the underestimation of the local fleet potential in producing pollution (especially in case of small fleets); and the reluctance to estimate that when the fleet is composed by a not negligible amount of old-generation vehicles. To this end, an integrated emission-estimation model for bus fleets is developed and described in the paper, with the research goal to facilitate the emissions calculation task for transit operators.
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