Improved Integrated Optimization Model Research of Mode and Route in Multimodal Transportation

The transport mode and transport path in the multimodal transport have an effect on the benefits of the carriers and customers. According to feature in the relationship between the transport mode selection and the transport path optimization, a integrated model which can be used to select the transport mode and optimize the transport path synthetically was proposed to fit the diversification of the transport path and the transport process practically. Then, the solving method about the integrated model was achieved by the PSO-ACO double-layer optimization algorithm. The upper layer searched optimal transport nodes sequence and the lower layer solved the optimal transport mode and path combination in the selected nodes. Integrated optimization problems of the multi-node, multi-mode, multi-path can be solved by this model, and experiment shows that the result is superior to ACO´s.