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2 2025

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Selected aspects of the concept of operating train traffic under the supervision of the ERTMS/ETCS L2 system on high-speed lines based on simulation studies

Pogorzelska-Szcześniak Aneta, Kochan Andrzej, Irlik Maciej, Kostrzewa Piotr, Dubowski Michał, Folęga Piotr

Transport Problems

2025

T. 20, z. 1

17--28

High-speed railway lines require the establishment of separate rules and regulations for the design and operation of traffic relative to conventional lines. These lines require the use of advanced train protection systems, such as the ERTMS/ETCS Level 2. The functionality, configuration and design capabilities of the indicated system provide opportunities for its development, including its adaptation and performance improvements. The configuration parameters are variables defined for both on-board and trackside equipment and design rules. This article presents the results of simulation studies, which made it possible to study the influence of the set parameters on system performance. In doing so, this study provides an opportunity to establish design and configuration rules for selected aspects of the ETCS.

Modeling operational scenarios for a high-speed signaling system

Gruba Łukasz, Kochan Andrzej, Kostrzewa Piotr, Irlik Maciej, Dubowski Michał, Folęga Piotr

Transport Problems

2025

T. 20, z. 2

33--43

In railway signaling, operational scenarios are integral to the system modeling process, serving to outline expected use cases and define the behavior of the system, subsystems, and actors within the railway environment. Operational scenarios are a primary source of requirements for developing the train control system and its subsystems. Additionally, the design of operational scenarios can offer invaluable insights for arranging trackside assets and may influence the creation of instructions and operational procedures for railway staff. This article highlights the advantages of defining operational scenarios in the early stages of implementing train control systems based on the European Train Control System application level 2 for high-speed lines. The process of defining and modeling operational scenarios is illustrated by analyzing a selected, representative scenario.