Abstract
To improve the reliability and safety of urban rail Automatic Train Control System, it is Query ID="Q1" Text="As Per Springer style, both city and country names must be present in the affiliations. Accordingly, we have inserted the country name in the affiliation 2. Please check and confirm if the inserted country name is correct. If not, please provide us with the correct country name." necessary to allocate the tolerable hazard rate (THR) of the Automatic Train Control (ATC) system to each subsystems and components during the design and implement of specific urban rail transit signaling system. In the beginning, this research analyzes the architecture of ATC system, as well as safety functions and overall safety requirements for the urban rail transit signaling system. Next the specific requirements and principles of equal apportionment technique, safety impact-based apportionment technique and complexity-based apportionment technique are discussed. Combined with the ATC system architecture, safety logic model and specific engineering design parameters, theses three safety allocation methods are used to allocate the THR to each subsystems of ATC as the requirements. At last, the comparison of allocation for these techniques shows that the allocation method based on system complexity is the most suitable for the actual conditions of the project, which can meet the requirements of the Urban Rail Automatic Train Control System. Therefore, this research is proved to be meaningful to improve the reliability and safety of urban rail transit to some extent.
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Acknowledgments
The project is supported by Science and Technology Commission of Shanghai Municipality (20DZ2251900), as well as the Natural Science Foundation of Shanghai (21ZR1423800). The work is also sponsored and supported by the Key Laboratory of Road and Traffic Engineering, Tongji University and Shanghai Engineering Research Center of Urban Infrastructure Renewal, Shanghai University. The authors are grateful for the reviewer of initial drafts for their helpful comments and suggestions.
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Zeng, X., Fang, Y., Yuan, T. (2023). Tolerable Hazard Rate Allocation for Urban Rail Automatic Train Control System. In: Zeng, X., **e, X., Sun, J., Ma, L., Chen, Y. (eds) Proceedings of the 5th International Symposium for Intelligent Transportation and Smart City (ITASC). ITASC 2022. Lecture Notes in Electrical Engineering, vol 1042. Springer, Singapore. https://doi.org/10.1007/978-981-99-2252-9_12
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DOI: https://doi.org/10.1007/978-981-99-2252-9_12
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