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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Author(s)
Tetsuya TAKATA1, Akira ASANO1 and Hideo NAKAMURA2
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DOI:10.17265/2328-2142/2018.05.004
Affiliation(s)
1. Kyosan Electric Mfg. co., Ltd, Yokohama 230-0031, Japan
2. The University of Tokyo, Chiba 277-8561, Japan
ABSTRACT
There have been a large number of accidents at level crossings of
railways and this has been considered to be a significant issue to be solved
for the realization of safe and stable railway transport. A conventional level
crossing control system is characterized by
the use of two types of electronic train detectors; one detects a train
approaching to a level crossing section and the other then detects the train
having left the level crossing. By contrast, closed-loop level crossing control
systems in which level crossing control equipment and train-borne equipment communicate with each other have been
advocated and are expected to serve as an effective solution to the
abovementioned issue. This paper describes the following three types of
closed-loop level crossing
control systems: decentralized level crossing control system, fully-centralized
comprehensive level crossing control system and fully-centralized
individual level crossing control system. This paper then assesses
the safety of these systems in comparison to the conventional level crossing
control system. For the purpose of the assessment of their safety, a new accident
analysis model called STAMP (systems theoretic accident model and processes)
that is suitable for software intensive systems is used to clarify the
advantage of the proposed three types of level crossing control systems in
terms of safety.
KEYWORDS
Level crossing control, railway signaling, closed loop control method, safety assessment, STAMP.
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