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PITTSBURGH, June 17, 2013: Carnegie Mellon Researchers Report Hybrid Cars Are Greener for City Drivers | PRNewswire | Rock Hill Herald Online

PITTSBURGH, JUNE 17, 2013 — /PRNewswire/ — Will that hybrid vehicle pay for itself and help the environment? That depends on how and where you drive, Carnegie Mellon University researchers report.

(Logo:http://photos.prnewswire.com/prnh/20020422/CMULOGO )

Jeremy Michalek, a professor of mechanical engineering and engineering and public policy at CMU, and Orkun Karabasoglua, a mechanical engineering research assistant, analyzed the potential cost and greenhouse gas savings of hybrid and electric vehicles under different driving conditions.

“We found that for highway drivers, hybrid and plug-in vehicles cost more without much benefit to the environment,” Michalek said. “But for drivers who experience a lot of idling and stop-and-go traffic, a hybrid could lower lifetime costs by 20 percent and cut greenhouse gas emissions in half.”

The study, funded by the National Science Foundation, Ford and Toyota, appears in the journal Energy Policy as the EPA is rolling out new fuel economy labels starting with 2013 vehicles.

“The new labels are improved, but no single test can capture all kinds of driving,” Michalek said. “Hybrid and plug-in vehicles will do the most good at the lowest cost if adopted by drivers who spend a lot of time in traffic. For these drivers, hybrids are a win-win, and the benefits may be much more than the labels suggest.”

The U.S. government uses standard laboratory tests to measure vehicle fuel efficiency for federal fuel economy labels and standards.

Read more here: http://www.heraldonline.com/2013/06/17/4953090/carnegie-mellon-researchers-report.html#storylink=cpy
More http://www.heraldonline.com/2013/06/17/4953090/carnegie-mellon-researchers-report.html

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