The research presented in this paper has been focused on the synergistic impact of the model for the traffic on the sustainable development of maritime tourism in the Republic of Croatia for the period 2012.-2018. The presentation of the mutual influence of the obtained growth rates of the model's variables has been aimed at a scientific formulation of the research findings and determining the most important theoretical principles of the influence of traffic on the sustainable development of maritime tourism in the Republic of Croatia. The paper provides explanation of the obtained indirect growth rates of the chosen variables by the year 2018. The highest indirect growth rates of the information model for the traffic at the service of the sustainable development of maritime tourism in the Republic of Croatia from 2012 to 2018 may be expected in the variable railway traffic (14.3 %), whereas the lowest values are forecasted for: air traffic, sea traffic, nautical tourism and cruise travels (4.8 %).
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