In the last decade the development of the economical and social life increased the complexity of transportation Side Table systems.In this context, the role of Decision Support Systems (DSS) became more and more important.The paper presents the characteristics, necessity, and usage of DSS in transportation and describes a practical application in the railroad field.To Garbage/Recycling Container Lids compute the optimal transportation capacity and flow on a certain railroad, specialized decision-support software which is available on the market was used.