精选优质文档-倾情为你奉上运输需求特性的经济学分析交通运输规划与管理 杨兴亮中文摘要：研究了运输需求的概念和特性，粗略地总结了运输需求的广泛性、多样性、派生性、规律性、不平衡性和部分可替代性个主要特征，说明运输需求包括流量、流向、流程、流时和流速个要素。并分析了运输需求的产生原因，讨论了运输需求分析的特点。英文摘要：The concept and characteristics of the transport demand, roughly summarizes the six major characteristics of transport demand ： universality, diversity, PaShengXing, regularity unbalance and part of the alternative, explaining the transport demand including flow, flow direction, process flow and flow velocity, when five elem
