Abstract
Cities are a source of air pollution, but in reality air pollution is the result of a combination of factors. It is the sum of these factors that gives air pollution particular characteristics in a given city. Fuel use is a prime source of air pollution in contemporary cities although there are cities where wind-blown dusts or the long range transport of pollutants, produced at great distance, are dominant sources. The relative contribution of different combustion sources is a function of economic, social and technological factors, but all mixtures contain certain primary gaseous pollutants, such as sulphur dioxide (SO2), nitrogen oxides (NOx) and carbon monoxide (CO), that are emitted directly from combustion sources, as well as secondary pollutants, such as ozone (O3), that are formed in the atmosphere from directly emitted pollutants. For the realized study it was choose a route from the historical centre of the Brasov city. The route contains six intersections. The data regarding the traffic flow were collected during the chemical level measurements. The points of the measurements were chosen in function of the intersection’s geometry and of the buildings’ placement from this area. In order to realize a modelling system for the main air pollutants, it is necessary to analyze all the intersections from this area. In this study is presented the methodology for a prediction model for urban air pollution.
Keywords: Pollution, Pedestrians, Traffic, Vehicles, Analyzes