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U.S.
Department of Transportation
§What: Model/Tool that extrapolates unit costs and
benefits to the National Level.
§Why: National driving behavior and transportation
infrastructure are heterogeneous.
§How: Six “Representative Areas” were used to capture
major geographical differences.
National
Extrapolation Tool
Representative Areas
United States
Key variables are estimated for each representative area in the model
Source
for urban and rural area statistics: FHWA