FORMATION OF AGGLOMERATION INFRASTRUCTURE NETWORK OPTIMAL TOPOLOGY BASED ON RAIL AND WHEELED TRANSPORT INTERACTION USING DISCRETE MATHEMATICS AND GRAPH THEORY TOOLS

The given work deals with the analysis of the development possibilities of transport systems of large cities and urban agglomerations. It focuses on the tools for forming an optimal topology of the agglomeration transport network. The paper formulates the formation sequence of the graph of the large city transport network that operates on the basis of rail transport, high-speed urban highways and traditional public transport interaction. The purpose of this work is to develop the theoretical foundations for the formation of the optimal graph of the city transport network under high motorization conditions, whereas the urban network operation is based on rail and wheeled transport interaction. The following methods of scientific analysis are used: dialectical, comparative economic and statistical, system, system-functional and historical-genetic analysis, economic and mathematical modeling, management theories of organizational and economic systems and the method of scientific abstraction. Complex application of these methods allowed to ensure the reliability of the conducted research. The paper formulates an algorithm for forming the graph of the agglomeration transport network. The criteria of the quasi-optimal graph of the urban transport system are developed, specified and justified. The need for multilevel structures in the integrated topology of the transport system and their role in the formation of the integrated efficiency of large city transport system operation is shown. The author formulates, substantiated and described the formation features of agglomeration transport clusters and determination of their relationships. The feature of the current development stage of transport systems of cities and agglomerations is the tendency of a significant excess of the application flow for communications (both from motorists and users of public transport) over the capacity of the system. This determines the need for a comprehensive solution, which consists in the transformation of the city transport network topology and the construction of its optimal graph formed taking into account the existing and future interaction of wheel, rail and other possible kinds of transport. In this case, the formation of the centers of gravity of places together with the existing real estate development and the existing infrastructure will form a system of transport clusters of agglomeration. Thus, the formation of an effective multi-level graph of the agglomeration transport network is necessary in terms of ensuring the optimality of the entire agglomeration development.

urban transport system, agglomeration, network, road, transport, area

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