1. National Modeling TRB Transportation Planning Applications Conference May 5, 2013

2. Why national modeling?  National trends: mode choice and mode shift  Infrastructure demand  Travel crossing state lines  Nationally significant travel corridors  Energy and vehicle emissions  Facilitate debate and implementation of transportation legislation  Providing anchor data for state external-internal and external-external trips

3. FHWA initiatives Long-distance survey research Origin- destination matrix estimation National travel model exploratory research Freight Analysis Framework (FAF) National networks (NHPN / HPMS)

4.  Recognized need for updated long-distance travel survey, but cost prohibitive  Explore new methods, commercial data vendors  Consider data requirements for future long-distance survey Long-distance survey research

5.  Annual business and leisure passenger trips by mode for 2008 and 2040  More zones equals larger matrix, more challenging to estimate accurately  Developed zones based on FAF with special generators Origin- destination matrix estimation

6.  National picture of freight flows and baseline forecasts to support policy studies  Tonnage and value of regional freight flows by commodity and mode for 2007, with forecasts to 2040  Assignment of tons to freight-hauling trucks on individual highway segments  123 domestic regions Freight Analysis Framework (FAF)

7.  “Big picture”  Putting the pieces together  Consider model output  What are data needs?  Develop estimation methods  Think outside the box, but make sure it can run! National travel model exploratory research

8.  HPMS 8 based on linear referencing system (LRS)  Current NHPN for geospatial visualization of transportation features  Relate HPMS, NHPN, and FAF  Create a routable network  Important for modeling vehicle and goods movement on roads National networks (HPMS/ NHPN)

9. What are your needs?

10. Brad Gudzinas FHWA Office of Highway Policy Information brad.gudzinas@dot.gov Jeremy Raw FHWA Office of Planning Jeremy.raw@dot.gov