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http://csl.illinois.edu/news/green-gps-calculates-most-fuel-efficient-route

Green GPS calculates most fuel-efficient route

by Kim Gudeman, CSL Green GPS technology May 3, 2011 – 3:14pm

A new software interface reduces energy consumption in transportation systems.

Green GPS, developed by computer scientists at the University of Illinois at Urbana-Champaign, works like general GPS navigation, except that in addition to calculating the shortest and fastest routes, it also projects the most fuel-efficient route.

“Currently at least 30 percent of total energy in the United States is spent on cars,” said Principal Investigator Tarek Abdelzaher, associate professor of computer science and researcher in the Coordinated Science Laboratory. “By saving even 5 percent of that cost, we can save the same amount of total energy spent on the nation’s entire information technology infrastructure.”

The technology runs on cell phones, which links to a car’s computer using an inexpensive, off-the-shelf wireless adapter that works in all cars manufactured since 1996. The car’s onboard diagnostics system uploads information about engine performance and fuel efficiency to the phone, which uses the data to compute the greenest route.

A grant through the National Science Foundation to Abdelzaher and Robin Kravets, also a member of Illinois’ computer science faculty, is funding a large-scale deployment of the service via the University of Illinois’ car fleet. The Office of Naval Research is funding research related to the technology’s networking component. Researchers — including Dr. Omid Fatemieh, graduate student Hossein Ahmadi and research associate Hongyan Wang — also are collaborating with IBM through its “Smarter Planet” initiative.

Pete Varney, who oversees some of the approximately 500 vehicles used by the Urbana-Champaign campus, hopes research will help maximize fuel efficiency for the fleet. The units will be installed on up to 200 vehicles, including full-size vans that could be carrying 1,000 pounds or more in tools and equipment.

“The less money we can spend on fuel, the more money we can direct toward maintaining other things on campus,” said Varney, director of Transportation & Automotive Services.

In addition, researchers are developing a social network of drivers who can share information about their cars. In the future,

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