This paper presents an approach to partially solving an issue within the scope of sustainable road transport, specifically the issue of potential accidents, i.e., traffic conflicts. First, a method is introduced for the analysis of traffic conflicts using video equipment. The attention is focused on traffic conflicts that occur at turbo-roundabouts. Given the diversity of causes of traffic conflicts, the emphasis is placed on the correct identification of the cause, i.e., whether the conflict is caused only by the negligence of the road user, or whether the conflict is more or less influenced by an inappropriately designed turbo-roundabout or one or more of its specific building elements (e.g., unsuitable corner radius). The next part of the article presents a selection of results that were obtained from analyses performed at about 100 turbo-roundabouts in nine European countries. Illustrative diagrams show the courses of the emergence of traffic conflicts, the causes of which are then described in detail. The conclusions from these analyses confirm the main hypothesis that the evaluation of traffic conflicts should be an essential part of designing roads, in order to increase traffic safety and, importantly, contribute to sustainable transport.

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<p>The article deals with the problem of passage of excessive transports on the roads and ensuring the necessary height and width parameters for this transport in the Czech Republic. Currently is lack of regulations for the design of communications for transit of excessive and oversized cargo in the Czech Republic. On the basis of these aspects the research in this area was carried out and the parameters were set to ensure the passage of excessive loads on the road. The article describes the issue of transportation in the Czech Republic, created database of transports with its resulting statistical analysis. It also describes the procedure for determining the resulting parameters, which should serve as a basis for the legislation and technical conditions.</p>

Engineering and the industry very often produce above-standard products concerning their dimensions and weights. There is often a problem with the transport of these products both within Europe and in subsequent transport all around the world. Because of these reasons, several projects to remedy the situation were implemented in the Czech Republic. The article describes the results of many years of research, which observed ensuring the passage of oversized cargos on roads. Further, the measurements, which were carried out, are presented in this paper − the measurement of an oversized vehicle using Global Positioning System devices, creation and modelling of missing cars in programs to verify the swept path, comparison of created models with the measurement using Global Positioning System devices.  Then the results of the implemented researches, the suggested parameters, and modelled cars are used for the suggestion of technical parameters of backbone network of roads. On these roads, the loads are transported. The results are also used for verification of critical points of the route, e.g. problematic places and intersections.

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