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Abstract:

This paper presents a system for monitoring and control of unoccupied railway track of automatic railway crossing signaling devices. The most important task of this system is to ensure the safety of rail and road traffic. This solution belongs to the class of critical systems, and is particularly important not only for safety reasons to prevent the collision of railway vehicles and road wheeled, but also entails various economic aspects. The first part of the article raises issues related to the safety of rail transport process. It then discusses the possibilities of using rail circuit to determine unoccupied section of the approach and the distance of the rail vehicle from the railroad crossing. Structure and functionality of automatic
railway crossing signaling devices on a level crossing were defined. The synthesis of safe measurement control digital system is based on a dynamic model using Petri net. Factors of reliability and discusses the advantages of the proposed system solutions were estimated.

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The Reliability of Critical Systems in Railway Transport Based on the Track Rail Circuit