Uncovering the influence of commuters' perception on the reliability ratio
The dominant method for measuring values of travel time savings (VOT), and values of travel time reliability (VOR) is discrete choice modeling. Generally, the data sources for these models are: stated choice experiments, and revealed preference observations. There are few studies using revealed preference data. These studies have only used travel times measured by devices such as loop detectors, and thus the perception error of travelers has been largely ignored. In this study, the influence of commutersâ€™ perception error is investigated on data collected of commuters recruited from previous research. The subjectsâ€™ self-reported travel times from surveys, and the subjectsâ€™ travel times measured by GPS devices were collected. The results indicate that the subjects reliability ratio is greater than 1 in the models with self-reported travel times. In contrast, subjects reliability ratio is smaller than 1 in the models with travel times as measured by GPS devices.
|Date of creation:||2012|
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