2. Literature Review of Solution Techniques
Our previous logistic timed-transfer models develop coordinated and optimized schedules for given freight networks, which minimize transfer delays, among other factors. Three different coordinated methods are analysed, namely: uncoordinated operations, coordinated operations with a common service headway, and coordinated operations with integer-ratio service headways. Uncoordinated operation meansthat all modes and routes are optimized independently; other coordination methods are developed for different characteristics and combinations of modes. It should be noted that several related models have been developed for urban passenger transportation and air transportation systems; however, some important differences pertaining to freight logistics (e.g. factors affecting demand, lack of self-guidance,
storage requirements, perishability, heterogeneous characteristics of cargos,information availability about shipments) require special attention in this study.
2. Literature Review of Solution Techniques
Our previous logistic timed-transfer models develop coordinated and optimized schedules for given freight networks, which minimize transfer delays, among other factors. Three different coordinated methods are analysed, namely: uncoordinated operations, coordinated operations with a common service headway, and coordinated operations with integer-ratio service headways. Uncoordinated operation meansthat all modes and routes are optimized independently; other coordination methods are developed for different characteristics and combinations of modes. It should be noted that several related models have been developed for urban passenger transportation and air transportation systems; however, some important differences pertaining to freight logistics (e.g. factors affecting demand, lack of self-guidance,
storage requirements, perishability, heterogeneous characteristics of cargos,information availability about shipments) require special attention in this study.
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