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A new urban freight distribution scheme and an optimization methodology for reducing its overall cost

机译:一种新的城市货运分配方案和一种用于降低总体成本的优化方法

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Purpose The paper refers to an innovative urban freight distribution scheme, aimed at reducing the externalities connected with the freight delivery process. Both packages destined to commercial activities and to end consumers (e-commerce) are taken into account. Each package is characterized by an address and dimensions. In the proposed transport system, freight is firstly delivered to the UDC on the border of urban areas through trucks or trains which perform the long distance transport. After, freight is reorganized and consolidated into load units, i.e. the FURBOT boxes, according to packages dimensions and to the addresses of receivers. Each box is addressed to a temporary unloading bay and it is delivered there by a FURBOT vehicle. The receivers are in charge of collecting their packages in the related unloading bays where they have been delivered. Methods and results The paper concerns a methodology for optimizing this freight transport system’s performances. The overall methodology receives in input the actual freight demand and the road network, and finds the transport system parameters (number of required FURBOT boxes, their temporary unloading bay, the FURBOT fleet dimension and the FURBOT vehicle routing) that minimize the system overall cost. The overall cost is a sum of the users’ cost, which depends on the distance they have to walk for collecting their packages in the FURBOT box, and of the operator’s cost, which depends on the number of required boxes, the total distance travelled by the FURBOT vehicles and the required number of FURBOT vehicles. Application The overall procedure has been applied to the case study of Barreiro old town, a suburb of Lisbon, Portugal.
机译:目的本文涉及一种创新的城市货运分配方案,旨在减少与货运过程相关的外部性。既考虑到商业活动,又考虑到最终消费者(电子商务)的两种方案。每个包装都有一个地址和尺寸。在建议的运输系统中,首先通过执行长途运输的卡车或火车将货物运送到市区边界的UDC。之后,根据包裹尺寸和收货人地址,将货物重新组织并合并为装载单位,即FURBOT箱子。每个箱子都指向一个临时卸货区,然后由FURBOT车辆运到那里。收货人负责将其包裹收集在相关的卸货区中。方法和结果本文涉及优化货运系统性能的方法。总体方法将输入的实际货运需求和道路网络作为输入,并找到使系统总体成本最小化的运输系统参数(所需的FURBOT箱数量,其临时卸货区,FURBOT车队尺寸和FURBOT车辆路线)。总成本是用户成本的总和,运营商的成本取决于他们需要走的距离才能将包裹收集到FURBOT盒子中,而操作员的成本则取决于总需要的盒子数量, FURBOT车辆和所需数量的FURBOT车辆。应用整个程序已应用于葡萄牙里斯本郊区的Barreiro旧城区的案例研究。

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