Mobility and reliability performance measurement.

PDFTech ReportFHWA/NC/2011-07NCDOT Project 2011-07Strategic planningTransportation planningMobilityPerformance measurementTravel timeVehicle miles of travelTraffic dataAlgorithmsReliabilityNorth CarolinaNorth Carolina. Dept. of TransportationWilliams, Billy M.Chase, R. ThomasXu, YilunKim, SangkeyCraft, DavidRouphail, Nagui M.Encarnacion, AnthonyNorth Carolina State University. Dept. of Civil, Construction, and Environmental EngineeringUnited States. Federal Highway AdministrationNTL-PLANNING AND POLICY-PLANNING AND POLICYNTL-HIGHWAY/ROAD TRANSPORTATION-HIGHWAY/ROAD TRANSPORTATIONUS Transportation CollectionThis project grew out of the fact that mobility was identified early on as one of the key performance focus areas of NCDOT\ue2\u20ac\u2122sstrategic transformation effort. The Transformation Management Team (TMT) established a TMT Mobility Workstream Teamin 2007. This team began working on a mobility implementation plan in early 2008, completed the report in May 2008, andpresented final recommendations to the Strategic Management Committee (SMC) in November 2008. The team recommendedthat NCDOT measure mobility of highway and other modes, naming the enabling tasks as 1) defining the performance measures,2) assessing baseline performance, and 3) setting performance targets. The research presented in this final report included tasksdesigned to contribute to each of these enabling tasks.Key findings and conclusions are presented regarding data accuracy, signal system data availability and quality, route travel timeestimation and performance metric calculation, estimation of volume and volume-based metrics in the absence of direct volumeobservation, temporal specification of the mobility performance metric analysis period, and mobility metric uses beyondoperational monitoring and management.Primary deliverables were a robust and validated algorithm for estimating route travel times from segment travel times, adecision framework and accompany models for estimating volume, VMT, and system delay in the absence of direct volumeobservation, and a preliminary framework for project lifecycle mobility value estimation