The dissertation provides a theoretical justification and suggests a solution to a scientific problem, which is to develop scientific and methodological approaches and practical recommendations for the implementation of the investment principles of modernization of the country’s transport system. Given the basic concepts of economic theory, the traditional understanding of social production, the definitions of «institutional infrastructure», «transport system», «transport infrastructure», which are characteristic of the transport industry, a hierarchy of concepts and relationship between modes of transport and components of the transport infrastructure. To reveal the prerequisites for the formation of a progressive transport system, the specificities of investing in the development of the transport industry and the main hindrances for the implementation of investment activities are identified. Based on the strategic priorities of the state investment policy, directions of state support for the implementation of investment projects are formed. Based on the European expert opinions and the specifics of the functioning and management of enterprises in the transport sector of Ukraine, the integration processes into the Trans-European Transport Network are studied. Conditions and prospects of development of the transport services market are identified; economic, social, and environmental interests of all actors in such market are distinguished. Taking into account the factors of the competitive environment, the economic principles of management of the transport sector of Ukraine are improved. Application of economic principles of transport management through effective state regulatory policy, the introduction of innovative technologies, modernization of existing and construction of new transport and logistics infrastructure, informatization of transport services market, etc. creates conditions for the transition from the minimum transport standard to the EU transport standards. Approaches to the analysis of the transport industry are further developed, which, in addition to the existing ones, are based on the comparison of economic indicators for the country in general and by type of activity «Transport, warehousing, postal and courier activities». The dynamics of economic indicators, which characterize the organizational and functional dimension of the transport sector of the country, have allowed establishing the density of the relationship between the resultant index – GDP and the volume of transported goods and passengers. Taking into account the results of the analysis of the transport sector in the system of the national economy, the methodological approach for substantiation of the modernization of the country’s transport system is improved. Indicators of investment and financial support, as well as the results of strategic evaluation of the transport sector of Ukraine have revealed the areas of modernization of the national transport system and the problems of the functioning of each sector and priority investment objects. The implementation of measures to modernize the country’s transport system raises Ukraine’s position in international rankings, which promotes integration into the European Transport System. For the first time, a semantic model of the impact of investment support for the transport system transformations on the country’s economic growth including theoretical, analytical, and performance components is offered. The paper illustrates the sequence of actions for the development of an investment infrastructure project, describes the components of such project, the distribution of functions and powers in its implementation, provides a structural scheme for managing the implementation of investment infrastructure project, defines the implementation procedure with different participants, and identifies the cash flow procedure during the implementation of the investment infrastructure project. The formalization of the roadmap for the development of the transport and logistics system of Ukraine is further developed. Based on the roadmap, a model of state regulation of investment processes in the development of the transport and logistics system of Ukraine is built. As part of improving the diagnostic apparatus of the impact of the transport system modernization on the efficiency of the national economy, linear and quadratic relationships are built between capital investment and GDP by type of activity «Transport, warehousing, postal and courier activities» applying a group method of data handling. Based on the models of linear trends of capital investments by types of transport, it is forecasted that the total amount of capital investments and the forecast value of GDP. The practical significance of the obtained results lies in the development, substantiation, and improvement of the scientific and applied basis for the investment principles of modernization of the country’s transport system.
