ANOMALIES IN THE VALUE OF TRAVEL-TIME CHANGES

ANOMALIES IN THE VALUE OF TRAVEL-TIME CHANGES
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旅行时间变化值的异常

DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
R. Mortazavi
R. Mortazavi
中科院分区：
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文献类型：
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作者：
L. Hultkrantz;R. Mortazavi

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对旅行时间变化价值的计量经济学估计的标准做法将旅行者划分为不同的市场，并在每个类别中假设线性效用函数。在这里，我们从效用函数的二阶近似中推导出一个rum模型。该模型是根据最近的旅行时间的SP值研究数据用概率估计的。社会经济变量、旅行时间等对旅行时间变化值的影响进行了估计和检验。我们的结论与之前用传统方法评估同一数据集的研究在几个方面有所不同。我们发现旅行时间节省的价值和认知阈值的迹象明显较低；无论投标价格如何，受访者都拒绝节省小于10-15分钟的旅行时间。非线性方法还为利益转移提供了一种方便的手段，即根据具体道路项目的使用方式和由谁使用来计算节省时间的平均值。？ 伦敦经济学院和巴斯大学，2001年
Standard practice in econometric estimation of the value of travel-time changes divides travellers into market segments and assumes linear utility functions in each category. Here instead we derive a RUM-model from a second-order approximation to the utility function. The model is estimated by probit on data from a recent SP value-of-travel-time study. The influence of socio-economic variables, trip duration, and so on, on the value of travel-time changes is estimated and tested. Our conclusions differ in several ways from those of a previous study evaluating the same dataset with the conventional method. We find a considerably lower value of travel-time savings and signs of a cognitive threshold; respondents decline travel time savings smaller than 10-15 minutes irrespectively of the bid price. The non-linear approach also provides a convenient means for benefits transfer, that is, to calculate the mean value of time savings for a specific road project, depending on how it will be used, and by whom. ? The London School of Economics and the University of Bath 2001