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* [ c K K x! z & x% t' j* ^" y$ Y4 O: I, M- jNew crash tests: Underride guards on most big rigs leave passenger vehicle occupants at risk in certain crashes, S8 q* I# A) R1 a2 W
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Modern semitrailers for the most part do a good job of keeping passenger vehicles from sliding underneath them, greatly increasing the chances of surviving a crash into the back of a large truck, recent tests by the Insurance Institute for Highway Safety (IIHS) show. But in crashes involving only a small portion of the truck's rear, most trailers fail to prevent potentially deadly underride.