March 14, 2013
The Insurance Institute for Highway Safety (IIHS) has released crash test results that show some of the under-ride guards on semi-trailers are not up to standards.
The guards are steel bars that hang from the backs of trailers to prevent a passenger vehicle from moving underneath them in a crash.
IIHS results show that eight of the top-selling trailers in the USA and Canada prevented passenger vehicles from sliding underneath when hit straight on.
However, when the car hit the trailer at a narrow angle, results showed that only one of the eight trailers passed.
"When an under-ride guard fails, it's a very devastating crash," said Chief Research Officer David Zuby. "The first point of impact is on the windshield and then the top of the occupant compartment is sheered off. If the guard stays in tact then the sensors on our dummies tell us that the risk of a life threatening injury is really low."
The truck that passed the test had more support towards the ouside of the trailer.