Environment-Based Railway Transportation Safety Assessment Using Hybrid Belief Rule Base

Abstract

For the high-speed line and the existing line in the Cheng-Yu region, an environment-based railway transportation safety assessment approach using hybrid belief rule base (H-BRB) is proposed. Indicators of building the H-BRB models include rain, wind, fog, frost, disasters and so on. Model data are from January 1, 2017, to August 30, 2018. The case study shows that high-speed line is relatively safer than the existing line. The results of the assessment are compared with the historical records of accidents and failures to verify the effectiveness of the method. The H-BRB model contains both conjunctive and disjunctive rules, which can reduce the number of rules and thus avoid the combination explosion problem.