Modeling of Reliability and Safety at Level Crossing Including in Polish Railway Conditions

Bester, L.; Toruń, A.

doi:10.1007/978-3-662-45317-9_5

Cited by 15 publications

(5 citation statements)

References 2 publications

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“…Level crossing protection systems are used to alert users of roads about approaching trains, and thus are an important component of the railway infrastructure affecting the railway safety as well as the traffic safety, according to Bester & Torun (2014), and Burdzik et al (2016). Warning is accomplished by means of road signals and acoustic signal generators (buzzer or bell).…”

Section: Level Crossing Protection Systemmentioning

confidence: 99%

“…It is even more difficult to estimate the effects of loss of company reputation and prestige. The dependencies between reliability and economic effects are therefore not easy to identify, argued by Lukasik et al (2016), and Bester & Torun (2014), but even a rough estimation of them gives some possibilities for comparing the efficiency of objects with different reliability, argued by Strauss et al (2015).…”

Section: Rams Analysis For Railway Traffic Control Systemsmentioning

confidence: 99%

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Economic Analysis of the Life‑cycle Cost Structure for Railway Traffic Control Systems

Ciszewski¹,

Nowakowski²

2018

EMS

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In the case of complex technical systems that should deliver long life, high availability, safety and reliability, such as railway traffic control systems, the ownership costs many times exceed the costs of its acquisition. Therefore, infrastructure operators in order to make optimal economic decisions, regarding the systems purchase or and modernization, expect that system delivers will give complex information not only about the initial costs of purchasing the system, but also about the costs of its operation and liquidation. It allows to include in budget plans, growing requirements for the reliability availability of infrastructure as well as crucial issue-the traffic safety. Considering the widespread use of railway traffic control systems, which are part of the railway infrastructure, even small savings obtained for individual systems can be resulted into significant financial benefits for infrastructure owners and operators. One of the methods which helps to consider all of the above-mentioned types of costs is the Life Cycle Cost (LCC) analysis. In the case of railway traffic control systems it is a mandatory part of RAMS (Reliability, Availability, Maintainability, Safety) / LCC analysis. Its requirements are defined in the European Union directives, and the methodology is included in the CENELEC standards. The methodology of the LCC analysis, including economic aspects as well as safety and reliability requirements specific to railway traffic control systems was presented by the authors. LCC structure for three various examples of railway traffic control systems were considered. This economic analysis includes level crossing protection system, axle counting system and automatic block signalling. Based on these examples the differences in the LCC structure for individual systems were presented.

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Section: Level Crossing Protection Systemmentioning

confidence: 99%

Section: Rams Analysis For Railway Traffic Control Systemsmentioning

confidence: 99%

Economic Analysis of the Life‑cycle Cost Structure for Railway Traffic Control Systems

Ciszewski¹,

Nowakowski²

2018

EMS

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“…Rozwój przemysłu motoryzacyjnego i związany z tym wzrost liczby pojazdów samochodowych, a także zwiększenie ruchu kolejowego wymusza potrzebę zapewnienia bezpieczeństwa na przejazdach kolejowych. W celu ochrony użytkowników dróg kołowych przed zagrożeniami wynikającymi z ruchu kolejowego budowane są systemy zabezpieczenia przejazdów [2]. Systemami o największej funkcjonalności są systemy samoczynnej sygnalizacji przejazdowej (SSP), służące do zabezpieczenia ruchu na przejazdach kolejowych kategorii B lub C. Przykładowe rozmieszczenie urządzeń SSP w strefie przejazdu dla linii dwutorowej przedstawiono na rysunku 2.…”

Section: System Samoczynnej Sygnalizacji Przejazdowejunclassified

Functional analysis of railway traffic control system using an expert system

Nowakowski

Bojarczyk

Łukasik

2018

atest

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The major functionality of railway traffic control system is to ensure efficient and safe railway traffic. Contemporary technique, electronics and informatics in particular, allows for automation of more and more tasks in transportation processes. Irrespective of the manufacturing technology, railway traffic control systems have to meet specific safety requirements. Because of this, these systems belong to group of safety-critical systems, also called safety-related systems. Due to these requirements, development, building and verification processes of railway traffic control systems always end with the assessment of correctness of each process. It should be pointed out that these processes are compound and require high skills level for persons involved in it. Because of this, an environment for an expert system (ExSys Corvid) can be used to automation of these processes. Authors used ExSys Corvid environment to build the expert system for verification and validation of Level Crossing Protection System (LCPS). Research conducted by authors confirmed high usefulness of this technology and showed the need for the usage of it in other railway traffic control systems.

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“…The concept of the information subsystem included solutions for monitoring the technical data of accidents at level crossings. Bester et al [11] defined a methodology based on stationary, homogeneous, and ergodic Markov processes to assess reliability and safety of devices at level crossings. The authors performed a hazard analysis and risk assessment at level crossings for the purpose of sustainable traffic safety using the tolerable hazard rate (THR) method and calculated the mean time between failures of device using the Windchill Quality Solutions software.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Safety Degree at Railway Crossings in Order to Achieve Sustainable Traffic Management: A Novel Integrated Fuzzy MCDM Model

et al. 2021

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Sustainable traffic system management under conditions of uncertainty and inappropriate road infrastructure is a responsible and complex task. In Bosnia and Herzegovina (BiH), there is a large number of level crossings which represent potentially risky places in traffic. The current state of level crossings in BiH is a problem of the greatest interest for the railway and a generator of accidents. Accordingly, it is necessary to identify the places that are currently a priority for the adoption of measures and traffic control in order to achieve sustainability of the whole system. In this paper, the Šamac–Doboj railway section and passive level crossings have been considered. Fifteen different criteria were formed and divided into three main groups: safety criteria, road exploitation characteristics, and railway exploitation characteristics. A novel integrated fuzzy FUCOM (full consistency method)—fuzzy PIPRECIA (pivot pairwise relative criteria importance assessment) model was formed to determine the significance of the criteria. When calculating the weight values of the main criteria, the fuzzy Heronian mean operator was used for their averaging. The evaluation of level crossings was performed using fuzzy MARCOS (measurement of alternatives and ranking according to compromise solution). An original integrated fuzzy FUCOM–Fuzzy PIPRECIA–Fuzzy MARCOS model was created as the main contribution of the paper. The results showed that level crossings 42 + 690 (LC4) and LC8 (82 + 291) are the safest considering all 15 criteria. The verification of the results was performed through four phases of sensitivity analysis: resizing of an initial fuzzy matrix, comparative analysis with other fuzzy approaches, simulations of criterion weight values, and calculation of Spearman’s correlation coefficient (SCC). Finally, measures for the sustainable performance of the railway system were proposed.

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Modeling of Reliability and Safety at Level Crossing Including in Polish Railway Conditions

Cited by 15 publications

References 2 publications

Economic Analysis of the Life‑cycle Cost Structure for Railway Traffic Control Systems

Economic Analysis of the Life‑cycle Cost Structure for Railway Traffic Control Systems

Functional analysis of railway traffic control system using an expert system

Evaluation of Safety Degree at Railway Crossings in Order to Achieve Sustainable Traffic Management: A Novel Integrated Fuzzy MCDM Model

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