b'How Strategic Models Can Help Practitioners Plan for Changetransportation and socioeconomic factors, such asThe Greenhouse gas Statewide Transportation mode choice, household budget, and neighborhoodEmissions Planning (GreenSTEP) model was the density. However, the components of strategic modelsfirst strategic model for statewide use; this model have less interaction, or are more loosely coupled,was later adapted for metropolitan applications. The than in an integrated model. In addition, strategicFederal Highway Administration (FHWA) altered the models require much less precise data and more easilyGreenSTEP model to make the tool available and accommodate new policies and features. This makesmore accessible for other states across the country them faster and more effective than integrated modelsto use. The resulting Energy and Emissions Reduction at covering a broader range of factors to explore aPolicy Analysis Tool (EERPAT) is largely identical to larger decision space. GreenSTEP; however, some revisions were made to the model to add estimated submodules for state-specific Strategic Models components. FHWA also added a GUI to make the tool accessible to practitioners without any R experience. EVOLUTION OF STRATEGIC MODELSStrategic models were originally developed by theFHWA periodically updates EERPAT (version 4.0 Oregon Department of Transportation (ODOT). Theirin 2017), which now includes a freight model built development was prompted by the realization amongon FHWA Freight Analysis Framework commodity practitioners that existing models did not sufficientlyflow data. Upgrades in the latest version also include address the diverse set of factors that impactedimproved life-cycle capabilities to analyze wheels-emissions (Figure 2), such as future vehicle types andto-well emissions and updates to enhance the model fuels. Previous models were also primarily designedinterface with Environmental Protection Agency tool to examine system performance during peak periods.MOVES (MOtor Vehicle Emission Simulator). Strategic models closed this capability gap.FIGURE 2.FACTORS CONSIDERED IN OREGON STRATEGIC MODELSSource: Oregon DOT, 2020 (adapted by RSG) 2020 RSG 5'