Purpose: To increase the carrying capacity of port railway stations by developing a methodology for interaction between port stations and ports. Methods: To enhance the understanding of operations in container shipping, the best practices and emerging trends anticipated for the year 2025 were analyzed. An evaluation of digital services within the railway network was performed. The study explored automated control systems applied in container transportation at both railway stations and ports. A comprehensive assessment of the interactions between port stations and ports was presented. Additionally, the existing technological shortcomings of railway station-port interaction were identified. Results: A methodology facilitating the interaction between railway stations and ports in terms of harmonizing their timetables has been developed. This methodology aims to decrease the downtime of container wagons at stations and improve carrying capacity by accurately predicting vessel arrivals in real time and determining the most efficient train handling strategy. A conceptual framework for this interaction methodology has been created, encompassing empirical foundations and assumptions, theoretical underpinnings, implementation strategies, and reliability criteria. An algorithm for this methodology has been established, which is exemplified through a typical technological scenario illustrating the interaction between ports and port stations. Practical significance: The practical implications of this methodology lie in its ability to enhance the efficient and coordinated operation of ports and port stations. It facilitates timely management decisions, and bolsters the competitiveness of the transport sector by enabling the selection of the most effective train handling strategy based on forecasts of vessel arrivals. Consequently, carriers will experience increased carrying capacity through the balanced distribution of railcars at port stations, while shippers will benefit from reduced infrastructure occupancy costs.