도시철도 차량 이종 노선 유지보수 운영효율 비교 연구

초록

To achieve performance goals through resource input in urban railway rolling stock operation, it is important to use rolling stock optimized for operating conditions. In this paper, we analyzed the efficiency of Seoul Metro Line 7 & 8 rolling stock maintenance operations using DEA; this involved comparing the TE(Technical Efficiency), PTE(Pure Technical Efficiency), and SE(Scale Efficiency) of identical type rolling stock operations on different operation lines. Also, the status of scale efficiency in the relationship between input and output was investigated. It was confirmed that, if the same rolling stock was operated on a line with long route length and high passenger demand, there was large deviation between lines in both technical efficiency and pure technical efficiency; there was also a difference in status of scale efficiency. Through this study, we suggest implications for various aspects of decision-making, such as establishing strategies for optimizing rolling stock operation and maintenance of urban railroad operators.

키워드