The implementation of market mechanisms in the transport and logistics system of the railway industry contributes to the development of competitive relations between market participants and stimulates the search for new ways to gain a competitive advantage. Technological outsourcing of industrial enterprises can strengthen the position of operator companies in the market and increase the efficiency of organizing the movement of car traffic on the railway network by redistributing responsibilities in the supply chain. Possible options for organizing interaction between operator companies and industrial enterprises and a model for organizing technological outsourcing are considered. The general structure is represented schematically in a graph formulation by bipartite graphs with various types of one-to-one, one-to-many relationships. Optimization mathematical models of the logistics of such interaction with different levels of generalization in nonlinear and combinatorial formulations are presented, adequately reflecting the practice of using technological outsourcing.

Keywords: Transport and logistics systems, technological outsourcing, operator activity, one-to-one, one-to-many interaction mechanism, linear integer programming

The article analyzes the current state of the postal services market, including the dynamics of the turnover of the postal services market in Russia, as well as an assessment of the development of postal items. The existing route network for the delivery of mail to Russian Post JSC is considered and the design location of the main objects of the sorting center in Rostov-on-Don - an automated sorting center in the immediate vicinity of the Platov airport is presented, an estimate of the costs of the current and project route networks.

Keywords: transport and logistics technologies, express delivery, postal services, postal operator, route network, logistics postal center, automated sorting center, comparison, costs