The optimal location and road pricing for an elevated road in a corridor
The optimal location and road pricing for an elevated road in a corridor
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DOI：
10.1016/j.tra.2008.01.019
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发表时间：
2008-06
影响因子：
6.4
通讯作者：
C. Chu;J. Tsai
中科院分区：
文献类型：
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作者：
C. Chu;J. Tsai
本文对廊道高架新建道路的选址问题进行了探讨。居民的分布均匀地分布在这条走廊上，每个人都在走廊的终点前往CBD。出行需求是有弹性的，取决于计入拥堵成本的汽车出行成本。据推测，政府将在这条走廊上修建一条新的高架路，以缓解交通拥堵，但它必须决定这条高架路的入口位于哪里。新高架道路的最佳选址取决于以下因素：(1)新道路和原有道路的通行费设置；(2)需求参数；(3)出行成本参数；(4)建设成本参数。在一个以政府福利最大化为目标的简单空间模型中，我们探讨了高架道路入口位置的确定和道路收费的影响。结果还表明，对于给定的一组通行费，随着入口位置从CBD向外设置，走高架道路的比例单调下降。从一组数值算例中得到了入口处的社会最优位置和次优通行费。
This paper discusses the location decision of an elevated new road in a corridor. The distribution of residents is uniformly located along this corridor and each individual makes trips to the CBD at the end-point of the corridor. Trip demand is elastic and dependent on the cost of a car trip that incorporates congestion cost. The government is assumed to build a new elevated road on this corridor to reduce the traffic congestion, but it has to decide where to locate the entrance of this elevated road. The optimal location of the new elevated road demon the following factors: (1) the set of tolls for the new road and original road; (2) the demand parameters; (3) the travel cost parameters; and (4) the construction cost parameters. We explore the effects of determining the location of an elevated road entrance and the tolls of road pricing on a simple spatial model with a welfare-maximizing objective of the government. The result also shows that, for a given set of tolls, the ratio of taking the elevated road is monotonically decreasing as the location of the entrance is set outward from the CBD. The socially optimal location of the entrance and the second-best toll are obtained from a set of numerical examples.