A New Measure of Travel Time Reliability for In-Vehicle Navigation Systems
A New Measure of Travel Time Reliability for In-Vehicle Navigation Systems
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DOI：
10.1080/15472450802448237
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发表时间：
2008-11
影响因子：
3.6
通讯作者：
I. Kaparias;M. Bell;H. Belzner
中科院分区：
文献类型：
--
作者：
I. Kaparias;M. Bell;H. Belzner
本文介绍了一种新的行程时间可靠性的措施，实现在智能汽车导航系统的动态路径算法。该措施是基于对数正态分布的行程时间的链接，并由两个指数对应的分布的极值，使他们反映了最短和最长的行程时间，可能会经历的链接。通过一系列数学运算，这些指标用路段速度分布的特征值来表示。导出了一条路线的指数和形成它的各个链路的指数的表达式。测量的准确性，然后通过现场实验和结果进行评估。
This article introduces a new measure of travel time reliability for implementation in the dynamic routing algorithm of an intelligent car navigation system. The measure is based on the log-normal distribution of travel time on a link and consists of two indices corresponding to the extreme values of the distribution, such that they reflect the shortest and longest travel times that may be experienced on the link. Through a series of mathematical manipulations, the indices are expressed in terms of the characteristic values of the speed distribution on the link. An expression relating the indices of a route and the indices of the individual links forming it is derived. The accuracy of the measure is then assessed through a field experiment and the results are presented.