Noise is characterized as an environmental problem that represents an exceptional danger to human health. With increased urbanization and motorization, road traffic has been identified as the dominant source of noise in urban areas. The traffic noise originates from vehicle exhaust and braking systems, devices for giving sound signals, engine operation, or as a result of contact between the wheels and the road. In urban areas, the intensity of traffic noise depends on the speed of the vehicle, the flow of traffic, and the surface on which the vehicles are moving.This study aims to monitor traffic noise using the device Brüel & Kjaer 2250 on the territory of the city of Kragujevac at specific locations along the roads and during peak hours. Based on the numerical modeling of traffic noise in the Quantum GIS software (abbr. QGIS), it is possible to identify impacts of noise pollution as well as deviations of real noise values from the permissible noise limits. Serbian law regulates that the highest noise level along city roads can be 65 dB (A). The final results obtained by this research can be used to assess the current state of environmental noise pollution, which can be taken into account in the future process of transport planning in the city of Kragujevac.

The circular economy (CE) is currently a worldwide popular concept that should ensure sustainable development and resource efficiency. It is established on the theory of consumption and use of resources in the process of production in a way that affects a limitation of adverse effects on the environment. Simultaneously, this concept creates additional value and reuse of the products. In the Republic of Serbia (RS), the idea of CE is still new and underdeveloped. Hence, this paper aims to explore the possibility of implementing a CE in companies that operate in the RS by adopting the already developed methodology in the European Union. This research was conducted by monitoring the production process in the company "MB INTERNACIONAL" that produced cardboard packaging. The obtained approximate value of Circular Indicator of this company was 0.47, which indicated that the company had excellent chances for full implementation of the CE model in the business with the application of specific measures. The low-budget and highbudget measures, which could improve the circularity level in the analyzed company, are also presented in the research.

In recent years, there has been an increase in the production of textiles and clothing, which is the result of an increase in the global population and an improvement in living standards. The consequence of this fact is the unlimited use of resources for the needs of the production process of textiles and clothing, as well as an increase in the amount of generated textile waste, which is currently not treated adequately. For the textile industry to have a chance in the future to take advantage of environmental, economic and social opportunities that it is currently unable to do, it is necessary to transform the current, linear system into a circular system. The paper presents the possibility of implementing the basic principles of the circular economy in the textile and clothing industry. According to the principles of the circular economy, the textile industry is based on the realization of four activities: elimination of unwanted substances and release (emission) of microfibers, increasing the utilization of clothing, improving the recycling sector, efficient use of resources and switching to renewable sources.

The circular economic model management in business organizations around the world depends on the emergence of innovations in technology, organizational forms and business models. The level of circularity of a business organization largely depends on the development of digital technologies. In a real dynamic business environment, digital technologies can be applied to capture the full potential of circular strategies for improving resource efficiency and productivity. By applying digital technology in business organizations, it is possible to monitor the process of transition of a linear economic model to a circular economic model. Therefore, this paper aims to review developed digital tools, which can be used to monitor the circular economy at the level of a business organization, in order to improve the decision-making process in the analyzed area.

Today automotive industry is a driving force for development of national economics so number of vehicle increases expeditiously. As an integral part of the vehicle, tires are generated annually in large amount all over the world. Growth of the car tires production affect environment and also the growth of non-degradable waste which has a large energetic potential but which currently is not fully used. The aim of this study is to evaluate the environmental impact of car tire during its whole life cycle and to identify activities in life-cycle phases that can be improved. That analysis can be achieved throughout its service life, from the acquisition of the raw materials through to the recycling of the worn tire, because the tire constantly interacts with the environment. Approaches to effectively reducing the negative environmental impact can be demonstrated only on the basis of detailed knowledge of this interaction.