Abstract: the results of the analysis of existing and projected volumes of export cargo transportation in the freight-stressed areas of the Russian railway network to the ports of Azov-the black sea basin are Presented. It is established that the growth of traffic ahead of the development of the transport capacity of the studied railway directions. In this regard, foreign and Russian experience in the development of growing volumes of cargo transportation in terms of infrastructure constraints due to the organization of heavy train traffic has been studied. The measures of development of heavy traffic of trains are offered. The method of calculation of efficiency of the organization of heavy traffic on one of sites of the North Caucasian railroad is given.

Keywords: Key words: export transportation, perspective volumes, infrastructure restrictions, ways of elimination, efficiency of heavy traffic