Abstract
The maintenance of electric multiple units (EMUs) has significant importance in ensuring the safe operation of EMUs. However, there have been limited experiences especially on the EMUs high-level maintenance scheduling which needs more research efforts. This paper presents an overview of both EMUs high-level and elementary maintenance scheduling in China. The current practice of maintenance scheduling is briefly summarized. Moreover, the key factors involved in the high-level maintenance scheduling are discussed, which can be basic guidelines to formulate constraints in modeling these scheduling problems. This study would benefit the researchers interested in the research of EMUs high-level maintenance scheduling and further studies could be performed to formulate an optimization model to systematically the balance between maintenance resources and economic operations.
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