The paper gives an overview of different air pollution models in projects and studies in the field of road traffic. A brief description is given for the presented models with key elements for their application. Special emphasis in the paper is given to the application of the current model in the Repub- lic of Srpska. Literature analysis in the field of air pollution modeling has shown that there are a large number of air pollution models. The most comprehensive model in terms of applicability and available data is the COPERT IV model, which is widely used in the European Union.
In this work, the characteristics of the traffic flow on the section of the Gradiška- Banja Luka highway, which is part of the European road route E-661, were analyzed in the period from 2019 to 2022. Data on the size of flow requests were taken from the database of the toll station “Jakupovci” on the Gradiška- Banja Luka highway. When defining the size of the flow request, the structure of the traffic flow was also taken into account, in accordance with the categories according to which the toll is collected. The period in which the analysis of flow characteristics was performed also includes the period in which the coronavirus pandemic reigned, when certain travel rules and prohibitions were in force. In accordance with that, the work will specifically analyze the impact of the COVID 19 pandemic on the characteristics of the traffic flow on the Gradiška- Banja Luka highway section. Given that the
„Jakupovci“ toll station is the busiest toll station on the Gradiška- Banja Luka highway, the results of the analysis can be applied to other sections of highways in the Republic of Srpska.
The paper gives an overview of different air pollution models in projects and studies in the field of road traffic. A brief description is given for the presented models with key elements for their application. Special emphasis in the paper is given to the application of the current model in the Repub- lic of Srpska. Literature analysis in the field of air pollution modeling has shown that there are a large number of air pollution models. The most comprehensive model in terms of applicability and available data is the COPERT IV model, which is widely used in the European Union
