Thanks to the federal program, the average fuel economy of all new vehicles purchased in the United States in July and August improved about 3 percent, according to a University of Michigan study.
Michael Sivak and Brandon Schoettle of the U-M Transportation Research Institute found that the program improved fuel economy of all purchased vehicles by 0.6 mpg in July, from an expected 21.5 mpg without the program to an actual fuel economy of 22.1 mpg. August was even better---an increase of 0.7 mpg, from an expected 21.7 mpg with no program to an actual 22.4 mpg under Cash for Clunkers.
The expected fuel economy, without the existence of the program, was calculated from a model that predicts fuel economy from the unemployment rate and the price of gasoline based on data from October 2007 through June 2009.
"Both the unemployment rate and the price of gasoline had significant effects on the average fuel economy of purchased vehicles," said Sivak, research professor and head of UMTRI's Human Factors Division. "In the months prior to the program, these two variables accounted for 58 percent of the variance in average fuel economy."
In comparison to the average fuel economy of 22.4 mpg in August 2009, the lowest value during the period examined was 20.2 mpg in October 2007. On the other hand, the highest fuel economy previously achieved was 21.7 mpg in May 2008, when gas prices hovered around $3.77 per gallon.
For more on Sivak, visit: http://www.ns.umich.edu/htdocs/public/experts/ExpDisplay.php?ExpID=700
Bernie DeGroat | Newswise Science News
The RWI/ISL-Container Throughput Index started off well in 2018
22.02.2018 | RWI – Leibniz-Institut für Wirtschaftsforschung
RWI/ISL-Container Throughput Index ending 2017 on a positive note
24.01.2018 | RWI – Leibniz-Institut für Wirtschaftsforschung
For the first time, an interdisciplinary team from the University of Basel has succeeded in integrating artificial organelles into the cells of live zebrafish embryos. This innovative approach using artificial organelles as cellular implants offers new potential in treating a range of diseases, as the authors report in an article published in Nature Communications.
In the cells of higher organisms, organelles such as the nucleus or mitochondria perform a range of complex functions necessary for life. In the networks of...
Animal photoreceptors capture light with photopigments. Researchers from the University of Göttingen have now discovered that these photopigments fulfill an...
On 15 March, the AWI research aeroplane Polar 5 will depart for Greenland. Concentrating on the furthest northeast region of the island, an international team...
The world’s second-largest ice shelf was the destination for a Polarstern expedition that ended in Punta Arenas, Chile on 14th March 2018. Oceanographers from...
At the 2018 ILA Berlin Air Show from April 25–29, the Fraunhofer Institute for Laser Technology ILT is showcasing extreme high-speed Laser Material Deposition (EHLA): A video documents how for metal components that are highly loaded, EHLA has already proved itself as an alternative to hard chrome plating, which is now allowed only under special conditions.
When the EU restricted the use of hexavalent chromium compounds to special applications requiring authorization, the move prompted a rethink in the surface...
19.03.2018 | Event News
16.03.2018 | Event News
13.03.2018 | Event News
19.03.2018 | Physics and Astronomy
19.03.2018 | Materials Sciences
19.03.2018 | Event News