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Planning Level Evaluation of the Effects of Ramp Metering on North Carolina Freeways
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2016-11-01
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[PDF-3.47 MB]
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Alternative Title:Planning Level Evaluation of the Effects of Ramp Metering on North Carolina [Title with likely missing words from Technical Report Page]
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Edition:Final Project Report August 2015 to October 2016
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Abstract:In response to growing traffic congestion, the North Carolina Department of Transportation will install North Carolina’s first ramp meters at four locations in the westbound direction of I-540 in Raleigh. The study outlined in this report addressed this need by developing a state-specific method that can be incorporated into NCDOT planning processes to evaluate any potential ramp metering projects in the future. The related frameworks of analysis were applied to the four westbound I-540 ramp meters to estimate the expected outcomes of the project. The I-540 analysis and frameworks resulting from this study focus on four major steps in the ramp metering process: 1) planning-level data collection, 2) planning-level analysis, 3) life cycle cost analysis, and 4) before-and-after installation evaluation. Ultimately, the research team found that westbound I-540 ramp meters will provide estimated benefits of between $28,234,500 and $73,410,500 over the next ten years. Although such future research is suggested, this study produces a sound foundation for evaluating ramp metering outcomes on which the state can build a ramp metering program that is both sustainable and efficient.
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