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U.S. Department of Transportation
Triscallion_Black
Other Key Variables
Variable
Impact on Model
Source
Fuel Price
Value of fuel savings in benefit estimate
Impacts number of vehicle miles travelled
DOE EIA AEO 2011 Reference Case
Vehicle Miles Traveled
Many AERIS applications yield benefits per vehicle mile traveled
Vehicle Fuel Efficiency         (on-road)
As fuel efficiency increases, AERIS application benefits decrease
Greenhouse Gas Emissions from Transportation
Reference point to measure impact of applications on baseline GHG emissions
Population   Growth
Impacts cost of outreach and education
Miles (freeway, arterial, local)
FHWA Highway Statistics 2007
Traffic Signals
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To build the baseline scenario – we utilized the NEMs model output from the DOE. This model takes into account the various parameters including population growth, economic growth, and energy prices to derive the vehicle miles travelled.