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Fig. 6 | EURASIP Journal on Wireless Communications and Networking

Fig. 6

From: Optimization of cold chain logistics distribution network terminal

Fig. 6

Soft time window indication. Vehicle Routing Problems with Time Window (VRPTW) is an extension of the general vehicle routing problem. Its goal is to minimize the sum of vehicle travel time and waiting time when providing service to customers in the time window. According to the time constraint or not, it can be divided into two categories: soft time window (VRP) and hard time window (VRP). The soft time window VRP requires that access be reached within the time window as much as possible; otherwise, a certain penalty will be given, that is, when the vehicle arrives at the earliest arrival time, the cost of the loss is the penalty when the vehicle arrives at the latest arrival time, while the hard time window VRP requires that the vehicle must arrive within the time window; otherwise, the service will be rejected

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