THE APPRAISAL OF HIGHWAY INVESTMENTS UNDER FIXED AND VARIABLE DEMAND
THE APPRAISAL OF HIGHWAY INVESTMENTS UNDER FIXED AND VARIABLE DEMAND
复制标题
固定需求和变动需求下的公路投资评估
DOI：
--
复制
发表时间：
1990
影响因子：
0.9
通讯作者：
H. Williams
中科院分区：
文献类型：
--
作者：
H. Williams
交通系统的单一模式均衡模型被用来研究在固定需求和可变需求下计算公路政策所产生的用户收益的差异，后者考虑了项目产生的交通量。这种差异依赖于：需求弹性；用户成本随交通流量的变化；以及策略本身，从解析和数值两个方面进行了探讨。调查的中心焦点是，增加拥堵对现有道路使用者造成的不利影响在多大程度上超过了对产生的交通的好处。评价了评价结果对道路评价的影响。
A single mode equilibrium model of a transport system is used to investigate the difference between user benefits arising from highway policies when computed under fixed and variable demand, the latter allowing for traffic generated by a project. The dependence of this difference on: the demand elasticity; the variation of user costs with traffic flow; and the policy itself, is explored both analytically and numerically. The central focus of the investigation is the extent to which the benefit to generated traffic is outweighed by the disbenefit inflicted on existing road users through increased congestion. The implication of the results for road appraisal are assessed.