Resumen
Policies for sustainable development of transport rely on three pillars: striving for stable social and economic growth, while reducing the pollution and protecting the natural resources. Seaports play a significant role in economic growth of port cities. In each such a city the port generates even several thousand jobs directly connected with the port operation. Unfortunately, the port activities also affect the natural environment. Both sea vessels and means of transport used in the hinterland are a major source of pollution. The purpose of this article is to present the role of port authorities in creating sustainable growth of transport through striving for reduction of transport externalities.