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This accident, caught by the Los Angeles Fire Department on Interstate 405, wasn't fatal thanks to the Corvette driver ducking just as his car rammed into the rear of the moving van. As the pictures from the department's Flickr page show, the Vette was destroyed by the impact, as the car dove under the trailer nearly into its rear axle. In the photo above, you can see the trailer guard jutting from the wreckage of the Corvette, which it sliced like a mandoline.
Those underride guards are mandated by the United States and Canada on all semitrailers to help prevent such accidents, and according to new research from the Insurance Institute of Highway Safety, they usually do a better job of stopping cars. Such crashes claimed 280 lives in the United States in 2011, the most recent data available, and by the IIHS' reckoning, most were due to cars sliding under trailers.
But the IIHS says those guards perform far worse when a vehicle strikes them off-center. To demonstrate, it staged several crash tests using parked trailers from eight manufacturers and 2010 Chevy Malibus ramming them at 35 mph. All passed the full-on tests, and seven of eight successfully handled crashes where the car hit just one half of the trailer.
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