To assure a safe and regular flow of traffic or transportation of goods, it is required to coordinate all of the processes of the intermodal transport, in order to avoid the unnecessary delays of goods in any part of the process itself. Each one of the parts of the process is highly important for achieving the competitiveness between the intermodal routes. This master thesis provides the general definition of the intermodal transport system, as well as the explanation of its technique and technology. Moreover, it provides the description of the functioning of intermodal transport on a liberalized market, which is present in the Republic of Croatia ever since the country joined the European Union. The analysis of the port of Rijeka and the existing railway infrastructure is also made in the master thesis. Particular attention is paid to the analysis of the bandwidth capability and the power of transport of the Zagreb-Rijeka line (M202). The main part of the thesis provides the identification of the participants and processes of intermodal transport, as well as the presentation of a suggestion of an ideal solution for the establishment of the coordination in the intermodal process.