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The article solves the problem of optimal selection of rolling stock within groups according to the criterion of minimum sum of squared deviations of the current values of a given metric on the evaluation of their mathematical expectations for group objects. The solution obtained on the basis of methods based on ideas integer programming using Boolean variables and concepts of the relation between objects and between groups of objects.

In article the problem of determination of length of turn of structures, the total loading capacity of the transport which isn't provided with freight, quantity of freight of the transport knot which is in a timepoint in a warehouse on the basis of definition of distribution of a random variable of the freight expecting loading or unloading, and also the free capacity of vehicles taking into account restrictions on the capacity of warehouses is considered. During the solution of a task the following assumptions are accepted: capacity of cargo handling devices of transport knot isn't limited; time of the translation of giving of cars for the pogruzoch-but-unloading front and back isn't considered. The structure is understood as conditional structure which loading capacity is equal to the total loading capacity of some party of real structures, and the moment of its arrival - to the arrival moment on transport knot of the last of them. The received results can be used for determination of optimum values of warehouse capacities and a technological stock of freight of transport knot at the set goods turnover.

This article discusses the directions of digitalization of the transport industry, both in the Russian Federation and in foreign countries. The characteristic of the directions of digitalization of the transport industry as elements of the technological revolution (industry 4.0) is presented. The review of approaches and various digital platforms used for digitalization of the transport industry to identify and analyze the main vectors of development in the field of digitalization of the transport industry. Comparative data on the costs of the digital economy and R&D in Europe, the USA and Russia are presented. The large-scale penetration of digital technologies is shown, both at the managerial level and at the technological level, which in turn allows enterprises to make timely operational decisions during operational activities in order to increase the asset utilization rate, and also allows for the integration of all business processes of the enterprise through the use of IT technologies in the process approach of determining the relationship of business processes, four main directions of digitalization processes in the transport industry are identified The main directions of digitalization processes in the transport industry are highlighted. Examples of the introduction of digital technologies in road and rail transport in Russia and the world are given. The work of local digital information platforms in a single digital platform of the transport complex is reviewed. The advantages of using digital information platforms are shown. A model of a unified digital transport business-logistics ecosystem is proposed.

The article considers the task of controlling the quality of work transport hub taking into account the performance given by stochastically independent Poisson counter and quasiresonance traffic flows. The problem is solved with the use of analytical and mathematical apparatus of Queuing theory. The results obtained in the article are supposed to be used to determine the forecast of the total free capacity of vehicles waiting for loading, the queue length of loaded vehicles (trains) in anticipation of unloading, the coefficient of use of useful volumes of warehouse complexes.

In article the solution of a task of the organization of operational monitoring of elements of the rolling stock on the basis of the methods of statistical definition of quality which were widely used in the analysis of defects of the current production is considered. The problem is solved on the example of carrying out control and diagnostic operations by results of which realization the conclusion about technical condition of elements of the rolling stock becomes. The approach offered in article allows to consider a posteriori information and by that to optimize the volume of the carried-out works. The received results can be used at the solution of a complex of tasks of decrease in resource intensity of system of repair and the maintenance of the rolling stock.