The subject of the study is two types of intermodal transport: container transport and accompanied intermodal Ro-La transports that the trucks are uploaded on special platform-wagons, and the drivers travel in a passenger wagon. When selecting the transport technology, operating costs are of major importance, but environmental, technological and other criteria also have an impact. In the study the methodology has been developed to evaluate the effectiveness of intermodal transport. The theory

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... multi-criteria decision making based on PROMETHEE (Preference ranking organization method for enrichment evaluation) methods has been applied. The methodology includes four steps. The first step defines the quantitative and qualitative criteria for the assessment of intermodal transport. The investigated strategies for transportation that have been studied are intermodal rail transport and road transport. The weighs of the criteria have been determined in the second step. The PROMETHEE multi-criteria analysis method has been applied in the third step for ranking the variants of transportation. The fourth step involves selecting an optimal transport technology by the optimisation criterionthe minimum of ratio of the normalized cost and normalized net outranking flows determined by the PROMETHEE method. The methodology is approbated for the routes Sofia-Varna and Dragoman-Svilengrad from the railway and road network of Bulgaria. It was found that the technologies that include rail transport are the best variant of transportation. For the surveyed routes the minimal number of wagons in the train composition has been established that provide ecological efficiency, i.e. saving on emissions of pollutants from heavy goods vehicles.