ABSTRACT
This chapter presents the interrelations between transport infrastructure, political boundaries and socioeconomic interactions. It presents the characteristics of the functional transformations of the Polish boundaries after World War II. The chapter discusses the infrastructural developments, which took place after 1989, in the context of an intensive increase in traffic across all Polish boundaries. It considers the current spatial distribution of Polish-German and Polish-Ukrainian interactions across the Polish territory. The significance of the Ukrainian market for the eastern provinces of Poland has been decreasing since 2003. The geopolitical changes and the development of socioeconomic relations applied pressure on infrastructural development. The processes occurring along the eastern Polish border seem to be more ambiguous. Geopolitical factors no longer determine the bilateral interactions, but continue to influence the demand for infrastructure. Transport infrastructure has limited, to a lesser degree over the entire period considered, the bilateral relations here than along the German border.
