In recent years, local intense rainstorms that are difficult to predict until just before the occurrence (about 30 min before) have been occurring more frequently, resulting in a higher risk of trains being interfered with, or even caught in a flash flood. This paper introduces a method to determine the optimal stopping position for trains to avoid such flash floods, with a reasonably fast mathematical optimization calculation. The method provides decision makers with informative solutions applicable to train operations on a quantitative basis when a local intense rainstorm is predicted.
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