## 1 Introduction and Literature Review  
Transportation as a sector of the country's national economy aims to satisfy the shipment requirements of society. Development of the economy brings about a rise of different types of transport. Depending on the type of transport, and mainly the cargo, requirements for its speed, quality, and price, as well as financial support and staffing, are changed. One of the specific categories is the transport of oversized and/or super loads and/or heavy and oversized transport. However, this transport, depending on its character, requires a higher amount of attention paid to the safety of all the transit modes when compared to \"standard transport.\" [1]. Concerning mass, the bridges are limiting engineering constructions in road transport. They are negatively affected by several factors. Besides being affected by the freight itself, they can withstand corrosion and degradation, which also depends on the bridge's geographic position [2]. It must be said that there are a number of bridges--not only in Slovakia--which are at, or even above, the limit of their planned lifetime, and it can have an adverse effect on their load capacities. When drafting new routes, or reconstructing old ones, it is also necessary to take into consideration, where relevant, the presence of heavy and oversized transport. Amending the already established infrastructure costs time and money and may even be impossible. Thus, it is necessary to define suitable requirements for transport infrastructure, especially for routes used for heavy and oversized transport [3]. Unfortunately, road infrastructure designers often do not have enough information about the parameters needed for trouble-free passage of heavy and oversized transport [4]. As also mentioned in the studies of [PERSON] and coll [5] and [PERSON] and coll [6], the EU Member States turn to procedures according to standard EN 1991-2 when designing new bridges, or when considering their reconstructions. Depending on the drafting standards in each Member State, it will lead to an amendment of the former loading schemes as well as the results of the load capacity for bridges. Using vehicles with a total mass of 60 t on a given road is also analysed by a designed vehicle with the same mass. If the bridges and roads are designed improperly, their maintenance costs in relation to heavy goods vehicles are high. In the case of illegal or uninspected operation of vehicles/vehicle combinations exceeding the maximum permitted axle loads, these costs increase exponentially. Based on the studies of [PERSON] and coll [7] and [PERSON] and coll [8], we can argue that problems with vehicle overloading are not only seen in Slovakia or Central Europe, but this issue is worldwide as well. One of the possible solutions for limiting the operation of overloaded vehicles/vehicle combinations may be a more efficient system of control, which can be achieved by dynamic weighing systems. [PERSON] et al., in their article [9] from 2015, focus on roundabout passage in relation to special transport, mainly oversized/overweight vehicle combinations. They designed via Thorus software six standard roundabouts through which--by simulation via AutoTurn software--the oversized vehicles passed in order to observe the spatial requirements of the roundabout passage. This study assessed the efficiency of different solutions for oversized vehicles. There were four strategies of passage assessed: a typical roundabout and three alternative strategies for a roundabout's building and passage--opposite direction travel (ODT), fully traversable central island (FTCI), and straight passage through the central island. The results of this study show, when using the ODT and FTCI method, a reduction in needed total apron, which would have to be covered by the roundabout in relation to oversized vehicles--without these designs taken into consideration.