Community of Practice

Welcome to the Community of Practice (COP)! This is an integrated site for the Travel Model Improvement Portal (TMIP) and the Freight Model Improvement Portal (FMIP). The objective of this COP is to provide an effective platform to encourage and facilitate information sharing, the exchange of ideas, and capacity building within the travel and freight modeling and planning communities.

Explore the publicly available webinars and resource library or register for an account to join in the exchange of ideas on the discussion forum.

Note: we are committed to providing equal access to information for everyone. If you need alternative formats or other reasonable accommodations, please send an e-mail to with your request. We will respond to your request within 24 hours.

View webinars

TMIP-FMIP Web Knowledge and Information Exchange (WKIE) for delivering web-seminars on current topics of interest to the transportation modeling, simulation and analysis community

Visit the library

TMIP-FMIP COP transportation modeling, simulation and analysis reference materials

Join the discussion

TMIP-FMIP forum to encourage knowledge sharing and networking within the transportation modeling, simulation and analysis community


What's New

  • TMIP Webinar: How to Forecast Uncertainty in Travel Forecasts - Recording Available Now

    As with most other types of forecasts, estimates of travel demand inherently include some level of uncertainty. Before-and-after studies have shown that the level of uncertainty ranges from modest to extreme, and many projects might not have been built or might have been designed differently had this uncertainty been understood. This webinar will describe a variety of approaches that have been used to estimate the levels of uncertainty in travel demand forecasts and determine the major factors contributing to those uncertainties. Applications to highway, airport and transit demand forecasts will be covered, along with applications involving travel demand forecasts generated by both traditional and activity-based travel demand models.

    The webinar recording is now available at

    To subscribe TMIP Upates, please click

  • 16th TRB National Transportation Planning Applications Conference was held on May 14-18, 2017 at Raleigh, N.C. The presentations for “Beyond Scenario Planning – The Role of Models with Deep Uncertainty” are available for download at