## 2 Basic Objectives and Purpose of the Work  
The main goal of this paper is to determine and define the parameters and indicators in real traffic conditions based on the results of the research, according to which the model of traffic demand generated by shopping centres of certain characteristics will be defined in the analysis procedure. The model is sensitive to local impacts because it includes parameters and indicators determined by research in real, local traffic conditions, which is also one of the goals of the work. Based on the proposed model, traffic demand generated by the shopping centre can be determined, depending on the characteristics of the location, the characteristics of the shopping centre (surface of the sales area and the number of parking spaces), the number of inhabitants of the town, the number of households and the number of registered passenger vehicles. Model testing was performed for a randomly selected shopping centre, and data on the size of traffic demand was collected by research in local conditions. Namely, the application of the model in the procedures for assessingthe impact on traffic in real conditions and the environment is also one of the goals of the research. The output results of the application of the model can be used to analyze the impact of the construction of shopping centres at selected locations on the traffic conditions on the surrounding street and road network in medium-sized towns of the Southeast Europe region, which is the main purpose of the paper. Therefore, the proposed model for determining traffic demand can serve to select the optimal location for the construction of the shopping centre, i.e., the location that will generate the least harmful negative impacts on traffic conditions. In the further procedure, and in accordance with the size of the generated traffic and its impact on the traffic conditions, the results obtained by the model can be used to dimension the elements of the street network, i.e., intersections and segments of roads, that is, links between intersections. One of the objectives of the paper is to develop models for an objective assessment of the generated traffic demand for significant land-use changes, such as the construction of shopping centres in mid-sized towns, which would be a step in the right direction to promote reliable traffic planning and promote the adoption of TIAs within the construction permitting process [6]. In Bosnia and Herzegovina and the Republic of Serbia, such a process has not yet been systematically established. Namely, the systematic assessment of the generation of travel for land use changes is not a mandatory procedure in Bosnia and Herzegovina, or Serbia, so it has not been applied so far in the procedures for selecting the optimal location of the shopping centre, with the exception of several individual cases, at the request of private investors. In addition to the application in the planning analysis procedures, the model can also have an application in the operational analysis process. Namely, the model can be applied to determine the newly created traffic, i.e., the increase in the existing traffic demand in the event of a change in the purpose of the land in the previously built parts of urban areas, i.e., the construction of the planned shopping centre. It is often difficult or impossible to change the profile of roads, i.e., the constructed street network, so the results of the application of the model are necessary in order to analyze the effects of the application of various measures in order to preserve the existing level of service. Therefore, the implementation of the model will indirectly enable the possible negative consequences on the traffic conditions of the street network due to the construction of the shopping centre to be prevented at the planning stage. By applying the model, based on the assessment of the increase in traffic demand, the effects of pollutant emissions can be analyzed, which can serve as an additional argument for decision-makers.