## 1 Introduction and Literature Review
However, this can only be achieved by unique arrangements, such as installation of a splitter island that is traversable and suitable for tires of trucks, removable signage that enables vehicles to use any traffic lane (same direction traffic and opposite traffic), or entering and exiting splitter islands, which enables oversized vehicles to use any traffic lanes to exit or enter a splitter, if needed; the vehicles shall turn left in the opposite direction of normal traffic without circulating the central island. Such travels are conditioned by cooperation with escort vehicles. The disadvantage of these designs is that it is impossible to plant verdure. The transport of large and heavy mechanical products was observed by [PERSON] et al. [10]. The article studied this kind of transport via GPS, according to which the authors created relevant models. The research results provide a possibility for verifying all the critical route points, such as bridges and roundabouts. [PERSON] et al. 's [11] research focused on the passage of oversized vehicles through roundabouts. The authors used [PERSON]'s algorithm, which takes into consideration the size of a turn angle. Based on the measurements, the authors designed the routes with minimum travel time. [PERSON] et al. [12] analysed the problem of the optimisation of transport processes in relation to oversized and heavyweight loads not on roads but in rail transport. The authors designed a universal multi-criteria system of selection and assessment of rational routing for oversized and heavyweight loads carried by rails. Based on these principles, they designed a criteria methodology that enables an objective assessment of route segments of heavyweight and oversized loads transport process route segments for rail transport. Critical points of heavy and oversized transport are level and elevated intersections, bridges, toll gates, traffic signage, and trolley and power lines, as well as other engineering structures in road infrastructure. [PERSON] et al. [13], in their article, paid attention to the assessment of the transport routes of oversized and excessive loads in relation to the passage through roundabouts via simulation methods for vehicle movements. [PERSON] and [PERSON] [14] also dealt with heavy and oversized load transports, aiming to evaluate the routes designed for Szczecin in Poland via the AHP method. They compared three simulated transports of steel construction by the analytic hierarchy process. The scientific contribution of their article lies in the rationalisation of urban transport of oversized and overweight loads in compliance with the concept of green areas. The criteria system described by [PERSON] et al. [15] is suitable for planning and designing the routes for heavy and oversized loads transport. This system enables one to objectively choose the most appropriate section of a route in the existing road network. It is also a tool for comparing different routes at a certain area, enabling one to choose the most suitable one according to their particular criteria via mathematical calculations. The article indicates that the criteria system is effective and may be used for the comparison of existing routes for oversized/overweight loads of different types of transport, with alternatives to build new sections of a route or to reconstruct the old ones. [PERSON] et al., in their article [16], pay attention to the transport of wind turbines and their parts in relation to heavy and oversized transport. They found out, via analysis, that road infrastructures have had to comply with a wide range of complex vehicle configurations for transporting wind turbine components that are often considered excessive and oversized by transport authorities. The result of the authors' activities and analyses is an overview of problems that occurred during the road transport of wind turbine components.