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dc.contributor.authorZhang, Michael
dc.contributor.authorHou, Zenghao
dc.contributor.authorZhang, Xingyang
dc.date.accessioned2020-04-03T16:48:37Z
dc.date.available2020-04-03T16:48:37Z
dc.date.issued2020-03-04
dc.identifier.urihttps://hdl.handle.net/1813/69724
dc.descriptionFinal Reporten_US
dc.description.abstractThis study evaluates the accuracy of the travel time data that are estimated by Dual loop, Waze, HERE, and INRIX against Bluetooth data on multiple segments of the I-80 freeway between Davis and Sacramento, CA. We conduct a simulation-based critical sampling rate analysis, which suggests that the Bluetooth travel time data qualifies for approximating the ground truth. Further, we apply evaluation methods and derived indices, Travel Time Error Bias (TEB), Average Absolute Travel Time Error (ATE), and Standard Error of Mean (SEM), to compare the travel time data reported by Waze, HERE, and INRIX with the benchmark (Bluetooth) data on the selected testing segments on I-80. The results show that the INRIX and HERE data closely match the Bluetooth data, both in the trends and values of reported travel time. Moreover, all three vendors’ data accuracy deteriorates when the traffic congestion intensifies.en_US
dc.description.sponsorshipCalifornia Department of Transportation 69A3551747119en_US
dc.language.isoen_USen_US
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectTravel timeen_US
dc.subjectDual loopen_US
dc.subjectBluetoothen_US
dc.subjectINRIXen_US
dc.subjectHEREen_US
dc.subjectWazeen_US
dc.subjectData quality evaluationen_US
dc.titleEvaluation of Freeway Traffic Data Acquisition: Technology, Quality, and Costen_US
dc.title.alternativeA Comparative Analysis of Alternative Travel Time Data Sources on I-80 Freewayen_US
dc.typereporten_US
schema.accessibilityFeaturealternativeTexten_US
schema.accessibilityFeaturecaptionsen_US
schema.accessibilityFeaturereadingOrderen_US
schema.accessibilityFeaturetaggedPDFen_US
schema.accessibilityHazardunknownen_US


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