Abstract
Various action plans have been put together to achieve the Kyoto protocol's targets for the reduction of greenhouse gas emissions. A modal shift from trucks to railway and marine freight transport is considered a means to this end. In this paper, we clarify the factors involved in the choice of type of transport modes by transport distance, time, cost and so on. These analytic forms were conducted by means of logit models. Furthermore we estimated the feasible ratio of this shift by sensitivity analysis, and achieved a considerable reduction ratio of CO2 emissions via a modal shift from roadway to railway and marine transports.