Chapter five works out a series of rules in designing the delivery lines , and studying how to make the delivery plan , and how to decide the right vehicle number of the delivery center 第五章是配送路线优化，本章对配送的重要性和配送的经济效益进行了分析，研究出了一系列制定配送路线的确定原则，对配送计划的制定方法和配送中心最佳车辆数量的确定方法进行了深入研究。
Population , vehicles quantity unceasing growth , but limitedmay use the land as well as the economical essential factorrestriction actually causes the urban road to expand the increase tobe limited , therefore inevitable brings a series of transportationquestion 人口、车辆数量不断的增长，但是有限的可用土地以及经济要素的制约却使得城市道路扩建增容有限，因此不可避免的带来一系列的交通问题。
At the same time , this project can be also used in strategic organizing , to assist in judging the resource demands ; when a specific distribution point has operation needs , the number of vehicles needed in service routes can be decided in advance according to a weekly cycle of main shift schedule 同时，本方案也能运用在策略性规划上头，协助判断资源的需求，当特定配送点产生营运需求时，可依每周一周期的主班表，事先决定服务路径所需的车辆数量。
First , users cannot find the available parking space conveniently by themselves . it not only makes time waste and failure operation , but also leads to a huge waste of social energy resource . second , the increasing of the vehicle amount enlarged the difficulty of management and the safety disadvantage of classical system , the system no longer ensure every vehicle ' s safety 存在的问题主要有:顾客置身于停车场中,不能方便快速地自主找到有效停车位,这样不仅浪费时间、影响停车场的正常运行,也造成了对社会能源的巨大浪费;停车场中车辆数量的增加,管理难度加大,传统停车场管理系统在安全性方面的缺陷更显严重,已无法有效保证车辆的安全。
It is shown from the analysis that the buyer ' s optimal order quantity is not sensitive to the number of shipments and the supply chain cost is increasing in the number of shipments ; the buyer ' s optimal order quantity and supply chain cost are increasing in the buyer ' s order cost ; the buyer ' s optimal order quantity is decreasing in the buyer ' s unit holding cost and supply chain cost is increasing in the buyer ' s unit holding cost 运用算例进行灵敏度分析，结果表明：运输车辆数量、购买商订单成本和购买商单位库存成本对最优提前期的影响不明显；随着运输车辆数量的增加，运输车辆最优载荷量的变化规律不是很明显，但供应链成本却呈现上升趋势；随着购买商订单成本的增加，运输车辆最优载荷量和供应链总成本呈现上升趋势；随着购买商单位时间内单位库存成本的增加，运输车辆最优载荷量呈现下降趋势，供应链总成本呈现上升趋势。
