Resumen
Fluctuations of the economic activity in transport result from the operation of many factors of a demand and supply nature in all sectors of the economy. These factors determine both the common and specific characteristics of such fluctuations. The aim of this paper is not only to examine the morphological features of cyclical fluctuations on the transport market in Poland and selected countries of the European Union, but also the degree of their synchronization. The latter can be understood in the external context (between fluctuations in the transport production of various countries), but also in the internal one, where the subject of comparisons are fluctuations in transport and basic macroeconomic variables. The properties of business fluctuations will be examined by classical procedures for the separation of cyclical components and the detection of their turning points.