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Pages 89-93

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From page 89...
... 89 a believable forecast of impact to one that is considered implausible. Insufficient data and inadequate methodologies can limit an understanding of the amount and sources of transportation GHG emissions currently emitted, as well as expected emissions in the future if current trends continue and no actions are taken to alter these trends.
From page 90...
... 90 standards from the perspective of how they align with model years; and not knowing what the fuel economy standards will be beyond the adopted time frame. Limited data on travel activity by nonpassenger modes, especially trucks, freight rail, and marine.
From page 91...
... 91 much of this research has relied on assumptions relating to likely effectiveness of different strategies. Very little attention has been given to nonurban areas.
From page 92...
... 92 integration. Concepts such as eco-adaptive cruise control, eco-routing, and green platooning, as well as system operations, may potentially transform travel.
From page 93...
... 93 operations improvements on traffic flow and emissions, especially if used in conjunction with modal emissions models such as MOVES. However, such applications are labor-intensive to develop and therefore feasible only for large projects.

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