Paola, Modesti and others are study

Paola, Modesti and others are studying the city's comprehensive transportation network, and starting from the two factors of time cost and economic cost, the shortest path model and solution algorithm of the urban comprehensive transportation system are established. Sheffi et al. gave the starting point and ending point of transportation, took the total cost as the final optimization goal, and analyzed the relationship and calculation method between transportation and inventory cost in detail. Athanasios et al. Taking the transportation time as the decisive factor, the shortest time optimal path solution model algorithm of the multimodal transport network is established. In order to improve the level of transportation services and save transportation costs and transportation time, Min Jie and Zhou Jianhua used a linear programming method to establish an integrated transportation route optimization model for multimodal transportation. In the logistics transportation route selection method model, Angelica Lossano applies the traditional shortest route labeling method to the solution of the shortest route of the comprehensive transportation road network by using the modification technique. M. Boussedjra and others adopted a two-way research strategy when considering the transportation network, and established an optimal path algorithm model with the shortest time between the start and end points. M. Beuth et al. Multi-modal model based on Belgian cargo transportation