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Benefits of recent improvements in vehicle fuel economy on overall fuel consumption and emissions
For the past several years, we have calculated (on a monthly basis) the average, salesweighted fuel economy of all light-duty vehicles (cars, pickup trucks, vans, and SUVs) sold in the U.S. The results indicate that, from October 2007 to September 2012, the average fuel economy has improved by 18...
An optimization approach to occupant safety and fuel economy in vehicle design
A major challenge in automotive design is the creation of safe vehicles with minimal environmental impact. This study presents a modeling framework for evaluating and optimizing body designs for improved occupant safety and fuel efficiency. Vehicle body mass is considered as the main link between...
Distance driven and economic activity in the individual U.S. States: 1997-2011.
During these times of heightened concern about energy and the environment, it is desirable to have relatively high economic activity per unit of driving. Thus, this study examined the current variations among the U.S. states and the District of Columbia in GDP per distance driven and the recent...
Making driving less energy intensive than flying
This report analyzes recent trends in the amount of energy needed to transport a person in the U.S. a given distance either in a light-duty vehicle or on a scheduled airline flight. After observing that the energy intensity of driving (BTU per person mile) is 57% greater than that of flying,...
Fuel and money saved using tires with low rolling resistance
This study was designed to examine how using tires that are at the current extremes of rolling resistance affects fuel consumption by light-duty vehicles in the U.S. The analysis was based on rolling-resistance measurements for 63 tire models that were obtained under uniform test conditions by...