Review article

The article considers the formation stages of public infrastructure in the system of transport complexes during the period from early XX century up to the present time. The stages are allocated on the base of interaction of transit, public and social spaces, as well as their role in the transport infrastructure system, and referred to as stages of community, separation, growth and integration. The latter stage, the stage of integration, is determined as a merger of transit the public spaces included in one public complex. The definition of a transport hub is given, and the conditions for the formation of a transport hub are highlighted.