The National Academies

NCHRP 20-44(32) [Final]

Guidelines for Selecting Travel Forecasting Methods and Techniques—Implementation
[ NCHRP 20-44 (NCHRP Implementation Support Program) ]

  Project Data
Funds: $375,878
Research Agency: Resource Systems Group, Inc.
Principal Investigator: Maren Outwater
Effective Date: 9/1/2020
Completion Date: 5/31/2023


The objective of NCHRP Project 20-44(32), Guidelines for Selecting Travel Forecasting Methods and Techniques—Implementation, was to build awareness of and an audience for a travel forecasting decision support tool (TFGuide) completed in 2017 under NCHRP Project 08‑94, Guidelines for Selecting Travel Forecasting Methods and Techniques. The TFGuide is intended to help inform selection for planning activities of the most appropriate travel forecasting method by transportation planners and policy practitioners.

NCHRP Project 08-94 developed the TFGuide into a tool that enables practitioners to determine appropriate methods for travel demand forecasting needs and planning application use cases at regional and state transportation agencies across the U.S. The TFGuide also provides information on budgets needed for planning analysis and suggests more cost-effective methods, which can be a significant benefit to practitioners who have limited time and resources to invest in new methods. The TFGuide was designed with the understanding that the practice of travel forecasting is ever evolving, allowing an administrator to update much of the content through its user interface rather than requiring programming.

NCHRP Project 20-44(32) – through four multiagency workshops, peer exchange, and direct outreach – succeeded in raising awareness of the TFGuide, accomplished usability and content enhancements, and transferred hosting of the tool to the American Association of State Highway and Transportation Officials (AASHTO).


The final report for NCHRP 20-44(32) is available here.

This report documents the implementation project and suggests next steps. Chapter 2 discusses the design of the multiagency workshops and the software updates that were undertaken during the first months of the work program. Chapters 3, 4, 5, and 6 discuss each of the multiagency workshops. Chapter 7 discusses the peer exchange. Chapter 8 documents the interim and final panel meetings. Chapter 9 describes the technical support and additional public outreach provided. Chapter 10 summarizes conclusions from the implementation program and recommended next steps.

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