Critical objects of transportation infrastructure in megacities and agglomerations

   The purpose of the work is to study the quality of the transportation network (TN) functioning depending on external and internal factors, to search for bottlenecks in the TN, to consider the network from the point of view of matching transportation supply and demand.

   Random flow of events, such as traffic accidents, overloading of highways, repair and construction works, etc. generates phenomena of wave character, spreading through the network and creating derivative problems.

   The task is to identify the objects of transport infrastructure, the importance of which is critical from the point of view of their significant impact on the stability of the transport system as a whole.

   The specificity of transport systems of large cities and agglomerations makes it necessary to consider this problem more closely, taking into account their peculiarities in various aspects: from the point of view of TN security it is necessary to find the most vulnerable elements of the transport network both among the many nodes and among the many communications; from the point of view of reliability it is necessary to ensure the normal operation of TN within the permissible limits; from the point of view of sustainability it is necessary to have such a structural and functional organization of TN, which will allow for external and internal disruptions in the transport network. Practical application of the research results can be used in transportation planning, development of master plans for urban development, reconstruction of existing transport infrastructure, to improve transportation security systems, development of intelligent transportation systems.

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