摘要：In the logistics chain the largest number of commodities is still transported by road using trucks coupled to semi-trailers (tractor-trailers). One of the most important aspects is safe loading and transportation of cargo. This article focusses on the issue relevant to May 20th, 2018. From that date the rules for the layout and securing of commodities carried by road vehicles are no longer valid in Lithuania (https://www.iru.org/sites/default/files/2020-11/en-safe-load-guidelines.pdf, Directive 96/53EC.). There are no new rules so the article provides recommendations for safely loading a three-axle semi-trailer. From the scientific perspective it must be concluded that trucks coupled to semi-trailers may only be loaded up to the maximum permissible capacity only in the case if the overall centre of gravity of the commodities is located in a certain given area. However, even if the weight of the commodities is below the maximum, they must be stowed only in certain areas. Otherwise, the axle load may be too high or too low. However, even when the weight of the commodities does not reach the maximum lifting capacity, they must be stacked only in certain areas of the area allotted to them. Otherwise, the axle load may be too high or too low. Otherwise, the axle load may be too high or too low. Using the load distribution curve, the load distribution diagram can be used to determine the distance from the front wall and the weight of the semi-trailer. In the paper, the loads of semi-trailers are modeled with the help of the software “Truck Science-bodybuilder” and load distribution curves are created for a three-axle semi-trailer model.
