United States Department of Transportation
i
Connected Vehicle Pilot Deployment Program Performance Measurement and Evaluation– Tampa (THEA) CV Pilot Phase 3 Evaluation Report
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2021-03-05
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[PDF-18.23 MB]
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Edition:Final Report, Phase 3
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Abstract:This report presents the methodology and results of the performance measurement and evaluation of the Tampa Hillsborough Expressway Authority (THEA) Connected Vehicle Pilot Deployment. The study evaluated the deployment of CV technology in six use cases to address mobility and safety issues in specific areas of downtown Tampa, Florida. The study implemented a robust experimental design to enroll more than 1,000 private citizens to experience the functionality and impact of several vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) applications via a Human Machine Interface (HMI) installed in the vehicle’s rearview mirror. The panel of participants was split into treatment (HMI enabled) and control (HMI disabled) groups using a randomized two-to-one matching (two treatment to one control) based on key socio-demographics. The study analyzed behavioral responses to the V2V and V2I applications using a before-after assessment and interrupted time-series analysis. The methodology allowed assessing the performance of each application with respect to each use case by estimating false positive, false negative, true positive, and true negative rates. Overall, findings provide evidence that the deployment contributed toward enhancing the mobility and safety of travelers and pedestrians. The analysis also shows heterogeneity in how the V2V and V2I applications performed in the six use cases under evaluation. This report details the analytical approach employed to evaluate the use cases and provides a discussion of limitations and main lessons learned from the deployment.
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