Collaborative Optimization of High-Speed Rail Freight Flow Distribution and Line Plan

In the context of achieving carbon peaking and carbon neutrality goals, developing the high-speed railway express delivery (HSReD) becomes a new way for the inter-city freight transportation. Unlike traditional modes of transport, HSReD is faced with more time-sensitive transportation demand, which brings higher requirements for cargo and train’s matching. In this paper, a mixed integer programming model is established, deciding the frequency and matching freight flows for each train line with the consideration of travel time constraint, cargo-train matching modes, and transportation cost. The proposed model was verified by the case data of Beijing-Shanghai high-speed railway, and the results show that the full load rate of the train reaches more than 80%, the freight demand is satisfied, and the remaining capacity of the trains is greatly utilized to create certain benefits for railway enterprises.