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Aiming at the main problems of low loading rate of vehicles, poor arrangement efficiency of routes, high costs for distribution and collecting the parts without the time window provided by a certain vendor in the milk-run process of enterprise operation, a new mathematical model called Time Window Priority Model (TWPM) is established based on the concept of the milk run system in order to solve vehicle...
Vehicle Routing Problem (VRP) is not only a key in the logistics delivery, but also a Nondeterministic Polynomial Problem (NP Problem). This paper gives a new vehicle routing optimization model with two phases for Capacitated VRP. Firstly, by GIS route optimization and saving algorithm, we achieve automated intelligent logistics delivery. Secondly, distribution route was greatly Optimization by using...
A new solution to vehicle routing problem (VRP) is proposed in order to overcome the disadvantages that the exact algorithms and heuristics algorithms are difficult to solve vehicle routing problem with multiple constraints. A simulation model of vehicle routing problem is built by combining the object-oriented technology and discrete event simulation technology. In this model, the events of distribution...
The multi-trip vehicle routing problem (MTVRP) is studied whose task is to determine both the multiple trips to satisfy all the customers' demands and the assignment of the trips to vehicles with the objective of minimizing the travel cost of the trips. For this problem, an algorithm based on filter-and-fan approach is proposed. Tabu search is adopted to initialize the procedure and provide useful...
In this paper a logistics transportation problem including routing, scheduling and loading tasks is presented. Most of the related works only involve the solution of routing and scheduling, as a combination of up to six different types of VRPs (Rich VRP), leaving away the loading task, which are not enough to define more complex real-world cases. We propose a solution methodology for transportation...
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