Autors: Dimitrova E., Ivanov V., Dimitrov V., Atanasov, I. I. Title: Statistical Analysis of Equipment Failures in Railway Signalling Systems Using the Wilcoxon Signed-Rank Test Keywords: equipment failures, Paired observations, Railway signalling systems, Wilcoxon signed-rank testAbstract: This report presents a statistical analysis of equipment failures in railway signalling systems using the Wilcoxon signed-rank test. The method is first applied manually to determine rank sums and test statistics, and then verified using software tools. The results enable the assessment of statistically significant differences between paired observations. References - N. Kumar, S. K. Chattaraj, and S. Kumar, "Reliability and inspection modelling of railway signalling systems," Infrastructures, vol. 2, no. 3, Art. no. 18, 2021.
- M. Hollander, D. A. Wolfe, and E. Chicken, Nonparametric Statistical Methods, 3rd ed., Hoboken, NJ, USA, Wiley, 2014.
- M. Rouaud, Probability, Statistics and Estimation, Creative commons, Mountain View, USA, 2013
- V. Kumar, L. Singh, and A.K. Tripathi, "Reliability analysis of safety-Critical and control systems: A state-of-the-art review," IET Softw. 2018, 12, 1-18. DOI:10.1049/iet-sen.2017.0053
- M. Ram, and H. Pham, Advances in Reliability Analysis and its Applications, Springer Series in Reliability Engineering, Springer: Cham, Switzerland, 2020.
- E. Dimitrova, and V. Dimitrov, "Methodology for Studying the Reliability of Interlocking Devices in Bulgarian Railways," Appl. Sci. vol. 15, pp. 4178, 2025, DOI:10.3390/app15084178
- V. Sapozhnikov, Vl. Sapozhnikov, and V. Shamanov, Reliability of Systems for Railway Automation, Remote Control and Communi-cations, Publishing House Marshrut: Moscow, Russia, 2003
- E. Tarasov, V. Nadezhkin, and Nadezhkina S., "Insulating joints as a destabilizing factor in the operation of the track circuit," in Proceedings of the 6th Int. Conf. APEC 2023; Moscow, Russia, 10 August 2023; E3S Web of Conferences, Vol. 41110, Art. No. 01019
- J.-L. Wybo, Y. Li, and J. C. Mattei, "Track circuit reliability assessment for preventing railway service disruptions," Safety Science, vol. 110, pp. 294-304, 2018.
- M. Jesussek, and H. Volk-Jesussek, Statistics made easy. A clear and Simple Introduction, 5th edition, ©DATAtab e.U., Graz, 2025.
- F. Nazarizadeh, A. Ahmadi, and E. Zio, "An analytical model for reliability assessment of the rail transportation system under dependent failures," Reliability Engineering & System Safety, vol. 229, Art. no. 108809, 2023.
- Reference documents of the railway network, NRIC, 2019, 2020, 2021.
- Annual consolidated activity reports, NRIC, 2020, 2021, 2022.
Issue
| 2026 61st International Scientific Conference on Information, Communication and Energy Systems and Technologies, ICEST 2026 - Proceedings of Papers, pp. 391-395, 2026, Serbia, https://doi.org/10.1109/ICEST71230.2026.11623642 |
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