The trend of continuous increase for mobility requirements results in a progressive increase in the use of vehicles of all modes of transport, which contributes to a significant increase in noise levels, especially in urban areas. The most significant noise in urban areas is traffic noise, where road traffic contributes the most. This paper reviews the treatment of road traffic noise in the European Union with a focus on Directive 2002/49 / EC. The paper presents the basics of the mechanisms of the institutional and management framework in the field of road traffic noise monitoring in EU countries. Also, the results of road traffic noise monitoring in EU countries, indicators of population exposure to road traffic noise, as well as indicators of the impact of road traffic noise on the health of the population, were presented.

Having in mind the general situation in the modern economy, the function of transport has a growing interaction on the environment. This cause-effect connection has resulted in the fact that transport is situated in the center of manufacturing and social interest, as well as scientific interest. The most important economic and political goal of EU is the creation of a single market with enabled movement of persons, goods, services and capital. Road transport of goods in the member countries before the creation of a single internal market, was characterized by the plurality of legal provisions both in the domain of internal and international road transport, in the areas of access to profession, access to market, technical standards and control, social conditions, fiscal issues, environmental protection, safety, etc. One of the necessary conditions for the functioning of internal market in road transport is the freedom of provision of services without discrimination based on citizenship or place of establishment. To reach this goal, it was necessary to harmonize the conditions of free competition. Legislation of Bosnia and Herzegovina that regulates road transport is fragmented per transport branches and characterized by overlapping of jurisdictions of a number of administrations of different departments regarding regulation and supervision of transport operations.

Road traffic has an important role and it is one of the main factors in modern life. Having in mind the fact that tunnels enable sustained flow of traffic on international as well as on national road networks, tunnels are observed as the most important infrastructure objects on the road network, both regarding their function and road traffic safety as a part of general safety of each country. Increase of the number of traffic accidents with tragic consequences in tunnels resulted in the creation of the number of scientific and research projects made by competent institutions of the European Union (EU). In order to raise road traffic safety to a higher level, the society must constantly make significant efforts in the improvement of traffic infrastructure, and all subjects and participants in traffic must systematically develop the traffic culture. Modern technology and information technology solutions enable the flow of great number of information and contents to the system users, in order to improve information on the actual state of a certain part of the transport network. Several catastrophic fires in tunnels in the last several years warn us in a dramatic manner that tunnels represent extremely risky places in road transport.

Having in mind war destruction and political situation in the country, Bosnia and Herzegovina is facing a significant problem of the construction of modern road infrastructure. The disproportionate increase of the number of motor vehicles compared to the development of road infrastructure represents a great problem for road traffic safety in Bosnia and Herzegovina while the age of vehicle fleet has negative effect on the environmental protection. The construction of motorways represents an important segment of transport connection of north and south of Europe. In order to preserve the inherited natural resources, special attention must be paid to negative consequences of the motorways construction. Integration of the road on Corridor Vc Motorway in the already existing transport infrastructure must also have an effect on traffic accidents. Road accidents often result in severe consequences - great material damage and casualties. One can assume that the total number of traffic accidents will decrease when new sections of motorway become operational. In accordance with these possibilities and having in mind the experience of developed countries, it is necessary to implement various informational and surveillance systems that will reduce the occurrence of all kinds of traffic accidents, and in the situation when the accident occurs, its cause, course and identification of the actors is identified with ease.

Roads and road infrastructure have been designed, built and equipped to suit their purpose and requirements of traffic safety. Elements of roads and road infrastructure can be put into operation only after it has been determined that they meet the requirements of traffic safety. Lately, more and more attention is paid to road as an element of traffic safety. The road may not be the main cause of traffic accidents, but it can “assist” in its development. According to statistics, 15-30% of accidents occur due to the poor state of roads and road infrastructure. Road Safety Audit is a systematic and independent examination of the parameters of road safety if they are in operation, or of projects if they are in the planning stage or under construction. In principle, this method assumes that the team of specially trained professionals (auditors) systematically examine either part of the existing road or a new road plan aimed at finding potential risks of traffic accidents. In many countries, including also Bosnia and Herzegovina, the security audits are not used. It is only in the last amendment to the Law of basics of traffic safety on the roads in Bosnia and Herzegovina that Road Safety Inspection (RSI) and Road Safety Audit (RSA) have been processed as concepts. For this reason, this paper presents the recent auditing methods of the existing and new roads that aim at raising the level of traffic safety to the highest level possible.

From numerous studies that have shown that many people feel unsafe while driving through tunnels, one can conclude that there is need to find a simpler decision-making system in the conceptual design of tunnel lighting that will, above all, minimize the need for corrective action in the design of the installed system and analyze the pre-calculation input parameters. There is interest in the quality of tunnel lighting system from all traffic participants. The main theoretical decision-making parameters and decision-making in the design of tunnel lighting, which could be further analyzed in terms of traffic safety, are described in this paper.

This paper refers to an experiment of SO2 absorption to the particles of sorbent CaCO3, the mass of sample was 100 g with fractional composition of 500-700μm and 1100-1300μm. During the experiment the temperature varied from 200 and 400°C. The aim of this experiment described in this paper, is to examine the influence of lower reaction temperature, the size of sorbent particles and reaction time to the degree of SO2 absorption and determining the degree of CaCO3 sorbent utilization. The results show that at the reaction temperature of approximately 200°C and average diameter of sorbent particles ≈600μm, the absorption degree of SO2 absorption to the particles of sorbent is between 42-66%. Reaching temperature of 400°C and with the same fractional composition of the sorbent, ≈600μm, the absorption degree of SO2 is slightly higher and it is somewhere around 45-78%. With greater diameters sorbent particle of ≈1200μm, absorption degree of SO2 is a bit lower. The determined degree of utilized sorbent CaCO3 is considerably lower and it reaches up to 6.87%. The acquired results indicate that besides CaO, Ca(OH)2 and CaMg(CO3)2 it is reasonable to inject the CaCO3 sorbent, in the areas of lower temperatures i.e. in the flue channel of the thermal power plant.