United States Department of Transportation
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Data Analytics and Evaluation of the Gainesville Trapezium Connected Vehicle Signal Phasing and Timing (SPaT) Deployment Project
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2021-10-01
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[PDF-19.16 MB]
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Edition:Final Report 06/11/2019 – 10/15/2021
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Abstract:The overall goal of this project was to evaluate the efficacy of dedicated short-range communications (DSRC) in improving efficiency and safety within a network of signalized intersections. In this report, we describe the data collection, processing, and analysis mechanisms for traffic state data collected from the Gainesville Trapezium, a set of high-volume arterials surrounding the University of Florida in the City of Gainesville. The Trapezium is instrumented with various sensing equipment, including high-resolution loop detectors, video cameras, DSRC roadside, and vehicles with on-board units. We describe the data collection and processing software architecture, consisting of edge computation, local servers, and cloud-based components that we use to deploy our applications. We conducted a baseline study on the state of traffic before the implementation of the DSRC system (“before” study). In the data collection phase of the project, we tested the performance of our data collection pipeline, with a focus on DSRC data, as well as collecting “after” data in order to determine the efficacy of the deployed DSRC system. We interviewed drivers of vehicles with on-board units to learn about their experience with the system. We also discuss the impact of COVID-19 pandemic-related closures on the state of traffic on the Trapezium, which occurred during the duration of this project.
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