Operating short turning line is an efficient strategy to satisfy the unevenly distributed demand during peak periods while reducing operational cost.However,for the battery electric bus(BEB)system,the application of t...Operating short turning line is an efficient strategy to satisfy the unevenly distributed demand during peak periods while reducing operational cost.However,for the battery electric bus(BEB)system,the application of the strategy is challenging due to the disadvantages of BEBs,such as limited driving mileage and long charging time.Improper vehicle configuration and charging scheduling may dramatically increase the operational cost and cut the benefits of these strategies.In this work,we propose a general framework to design an effective short turning strategy for the BEB system at a tactical planning level.First,the trade-off relationship between the battery capacity and the average trip time is identified by modeling the BEBs operations.Second,a microeconomic model is formulated to jointly optimize the frequencies and charging schedules of the whole bus line and the short turning line,to effectively minimize passengers’waiting time and operational cost.Finally,numerical experiments have been carried out for an illustrative linear line to demonstrate the potential benefits of the sub-line operating strategy compared with the normal operation.展开更多
When an urban metro disruption occurs,the urban metro usually operates in a short turning mode and bus bridging is the typical way to relink the disconnected stations.For emergency response models dealing with urban m...When an urban metro disruption occurs,the urban metro usually operates in a short turning mode and bus bridging is the typical way to relink the disconnected stations.For emergency response models dealing with urban metro disruptions,minimizing passenger delay in the bus bridging process and the metro short turning process is usually the optimization objective.In this study,we simultaneously consider the passenger delay in the bus bridging process and the metro short turning process to develop a coordinated emergency response model dealing with urban metro disruptions.The proposed coordinated model is validated in an actual urban metro line using actual passenger boarding demand data.Useful insights in response to urban metro disruptions are obtained.展开更多
基金supported by the National Natural Science Foundation of China(71971018,71621001,72091513).
文摘Operating short turning line is an efficient strategy to satisfy the unevenly distributed demand during peak periods while reducing operational cost.However,for the battery electric bus(BEB)system,the application of the strategy is challenging due to the disadvantages of BEBs,such as limited driving mileage and long charging time.Improper vehicle configuration and charging scheduling may dramatically increase the operational cost and cut the benefits of these strategies.In this work,we propose a general framework to design an effective short turning strategy for the BEB system at a tactical planning level.First,the trade-off relationship between the battery capacity and the average trip time is identified by modeling the BEBs operations.Second,a microeconomic model is formulated to jointly optimize the frequencies and charging schedules of the whole bus line and the short turning line,to effectively minimize passengers’waiting time and operational cost.Finally,numerical experiments have been carried out for an illustrative linear line to demonstrate the potential benefits of the sub-line operating strategy compared with the normal operation.
基金supported by the National Natural Science Foun-dation of China (Grant No.71871224).
文摘When an urban metro disruption occurs,the urban metro usually operates in a short turning mode and bus bridging is the typical way to relink the disconnected stations.For emergency response models dealing with urban metro disruptions,minimizing passenger delay in the bus bridging process and the metro short turning process is usually the optimization objective.In this study,we simultaneously consider the passenger delay in the bus bridging process and the metro short turning process to develop a coordinated emergency response model dealing with urban metro disruptions.The proposed coordinated model is validated in an actual urban metro line using actual passenger boarding demand data.Useful insights in response to urban metro disruptions are obtained.
