Cost-effective Performance Measures for Travel Time Delay, Variation, and Reliability
TRB┐s National Cooperative Highway Research Program (NCHRP) Report 618: Cost-Effective Performance Measures for Travel Time Delay, Variation, and Reliability explores a framework and methods to predict, measure, and report travel time, delay, and reliability from a customer-oriented perspective.
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alternatives analysis areas Arterial beneﬁts capacity Chapter computed conﬁdence interval congestion corridor data collection decision makers default deﬁciencies deﬁned detector Determine develop difﬁcult equations estimate evaluation Exhibit facility Federal Transit Administration ﬁeld measurements ﬁrst ﬂow forecasting freeway Gamma distribution guidebook Highway identiﬁed identify improvements incident lanes loop detectors mean travel measured travel methods miles minutes Misery Index mobility and reliability monitoring NCHRP NoPass null hypothesis operations peak period percent performance measures planning applications Planning Time Index problem procedures provides real-time recreational vehicles Region reliability measures road segment roadway sample segment travel selection signal signiﬁcant speciﬁc standard deviation Statistical hypothesis testing statistics Step strategies Subarea system performance target travel tion trafﬁc transit transportation system travel rate travel-time data trends trip Type I error typical urban values variability variance volume