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http://dx.doi.org/10.7470/jkst.2012.30.1.135

Estimates of Time-varying Values of Traffic Information on Variable Message Sign  

Rhee, Kyoung-Ah (Graduate School of Environmental Studies, Seoul National University)
Lee, Young-Ihn (Graduate School of Environmental Studies, Seoul National University)
Publication Information
Journal of Korean Society of Transportation / v.30, no.1, 2012 , pp. 135-147 More about this Journal
Abstract
The benefit of traffic information on variable message sign can be divided into two. At the public level, the benefit of ATIS is the travel time saving, which is not only induced from ATIS, but also mixed with that of ATMS. In the economic appraisal of ITS, the benefit of ATIS has so far been regarded as the derived benefit from ATMS. At the user level, the benefit of ATIS is reduced driver uncertainty through the forward traffic status information. User can benefit from the information on VMS and therefore may have the willingness to pay for it. Recently attempt to qualify the value of information on VMS was increased, but there was a danger of distorting or over-estimates of the ATIS benefit because the related studies didn't consider the time-dependent attributes of traffic information and provided the single value. Estimates of the time-varying value should be needed for a rigorous economic appraisal of ATIS. In this study, we varied the value of information on VMS according to peak and non peak trip and verified the hypothesis that time-varying of value was statistically significant.
Keywords
Driver Uncertainty; Sample Size Of Contingent Valuation Method; Survival Function; WTP Demand Curve; Peak/Non-Peak;
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Times Cited By KSCI : 2  (Citation Analysis)
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