Target Completion Date: January 31, 2023 Safety, Operations, and Traffic Engineering
Accurate prediction of reliability measures would help state DOTs set performance targets and communicate the progress toward those targets as required by the MAP-21 Act. A recent VTRC research study “Methods to Analyze and Predict Interstate Travel Time Reliability” developed linear quantile mixed models (LQMMs) and generalized random forest (GRF) models to analyze travel time reliability influencing factors and predict reliability of the interstate system during peak traffic periods. This project will implement the recommendations developed in that research study for the interstate system, including developing detailed step-by-step data preparation and modeling guidance, applying the GRF approach developed using INRIX TMC network to the NPMRDS network, and expanding the GRF approach to cover the weekday midday and weekend daytime periods using NPMRDS.
Last updated: July 5, 2023
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