In this paper, the author deals with determining the amount of support for the purchase of transport units in the carrier's entering the market. Besides determining the amount of support proposed, economic and environmental aspects of the support are considered here as well. The amount of support proposed served as a basis for determining the estimated number of transport units supported by the programme and calculating the volume of transport and transport performance. Based on the transport performance estimated, environmental benefits were derived, i.e. the reduction of emissions was calculated in relation to the transfer of goods transport to continental combined transport. The amount of support proposed not only takes into account...