United States Department of Transportation
i
Incorporating Reliability Performance Measures in Operations and Planning Modeling Tools
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2022-02-01
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[PDF-2.50 MB]
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Edition:Technical Report
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Abstract:Scenario Manager and Vehicle Trajectory Processor (NeXTA) are software products developed under the second Strategic Highway Research Program (SHRP2) Project L04for facilitating the incorporation of reliability performance measures into operations and planning tools. Pilot test sites in both Portland, Oregon and Phoenix, Arizona were used in conjunction with the dynamic traffic assignment (DTA) model DynusT to evaluate the viability of applying these software tools in a real-world environment and for practical everyday purposes. Sources of unreliability that were incorporated into the analysis included incidents and changes in both weather and volume. A whole-year analysis was conducted in which travel time distribution profiles were generated for 4 corridors ranging in length from approximately 6 to approximately 15 miles. The simulation results were then contrasted with actual travel time distribution profiles observed under base-year conditions and found to be comparable. The report includes recommendations for conducting similar analyses and suggested next steps to further enhance the quality and practicality of the analysis procedure.
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