The feasibility and necessity of building Russia’s first high-speed railway line are justified. A brief historical overview of the country’s scientific development in connection with the HSR project is provided. The question of scientific support for the construction of high-speed railways is addressed. Data on the creation of a high-speed train in Russia, its technical characteristics, and the current status of plans are presented.

The history of increasing train speeds on Russian railways from their inception to the present day is described. The role of Russian transport scientists in the design, construction, and operation of railways is examined, and the importance of scientific support for railway projects is determined. Special attention is paid to addressing current problematic issues in the construction of high-speed railway lines and rolling stock for them in modern conditions.

The process of designing Russia’s first highspeed railway line, Moscow — St. Petersburg, by the company “Roszheldorproject” and associated organizations is outlined. The main regulatory documents prepared for the project and the parameters of the route are specified. The key problematic issues and their solutions are identified.

The normative-legal framework for the design and construction of the high-speed railway line Moscow — St.Petersburg is analyzed. Its strengths and weaknesses are noted, as well as the difficulties encountered during the legislative process. Suggestions are made for amendments to the legislation to expedite the design and construction of the railway line.

Questions are raised and methodological approaches are formed for justifying engineering solutions for the creation and operation of infrastructure and rolling stock for high-speed railway lines. It is demonstrated that synchronization of requirements for infrastructure and rolling stock parameters is a prerequisite for the effectiveness of implementing projects for organizing high-speed traffic.

Based on the logical-analytical method of economic evaluation of transport projects, the prospects for the development of highspeed railway infrastructure in Russia are assessed. Research on macro barriers to the implementation of HSR projects, trends in railway construction in Russia, investment mechanisms, various socio-economic effects of HSR project implementation, and other aspects allows for the enhancement of the existing scientific toolkit for the technoeconomic justification of high-speed railway infrastructure projects.

The aim of the study is to develop a new methodology to assist in making operational dispatch decisions in high-speed traffic, based on the analysis of operational data using probability theory and simulation modeling tools. The method of simulation modeling, mathematical statistics, and probability theory is applied. The results of the research, after their implementation in the dispatch control centers of Russian Railways (OAO “RZD”), will contribute to the improvement of dispatch control efficiency on railways.

The main provisions of the special technical conditions developed by the team of PGUPS for the automation and telematics systems of the high-speed line Moscow — St. Petersburg are presented. The features of requirements for the design of distributed systems of microprocessor-based electrical interlocking and interval regulation systems based on a radio block center for HSR are described. The implemented principles are based on a comprehensive approach to the construction of railway infrastructure, taking into account the uniformity of the applied technical means of ATS for HSR‑1.

The aim of the work is to formulate a new direction for improving high-voltage DC traction power supply systems for planned high-speed railways and the reinforcement of existing lines. Based on the developed methodology for determining the energy consumption of the transportation process during intensive train movement, a method of structural synthesis of traction power supply devices is proposed, based on criteria of current density constancy and acceptable voltage loss in the contact network. Schematic and technological structural solutions for the reinforcement of existing sections and new electrification are presented, enabling the development of highspeed train movement in the DC electric traction system.

The article describes the radio communication systems that need to be used in the project of the high-speed railway line Moscow — St. Petersburg. It is noted that the requirements for radio communication systems involve the use of modern standards and technologies that enable the implementation of necessary functions for safe and efficient train traffic management and technical operation of the future HSR‑1.

To accomplish the set task, finite volume methods were applied to model the aeroelastic interaction in the system “rolling stock — tunnel-type artificial structure.” The analysis of the obtained data was carried out using statistical processing methods of numerical simulation results. Measures have been developed to minimize the impact of turbulent airflow on the aeroelastic interaction of tunnels with moving high-speed rolling stock. A dynamic model of the air exchange structure on the diffuser-convergent section of the tunnel has been developed.