Flutterby™! : USDOT acknowledges induced demand

U.S. Department of Transportation, Climate Change Center Climate Strategies that Work: Improved Travel Demand Modeling (PDF)

Account for National Studies: Many studies assert that long-term travel demand elasticity associated with new lane miles is consistently around 1.0. This means that highway travel demand tends to rise to fill new capacity over time, reducing the congestion relief of highway capacity expansion projects, while negatively impacting regional air quality through induced vehicle miles traveled. Project environmental and other analyses should incorporate best-in-class research and analysis on travel demand.

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