Are Rear Underride Guards Overrated?

The National Highway Traffic Safety Administration wants to know what you think about its latest technical report on the non-effectiveness of rear underride guards. The request for comments is part of a long, slow evaluation process of FMVSS 223 and 224, which require the underride guards meet a strength test on trailers with a GVWR of 10,000 pounds.

The standard has been in effect since 1998. In 2004, the agency announced that it would be evaluating the efficacy of these standards. The report, a statistical analysis of crash data from two states involving trucks with compliant underride guards found no statistically significant preventative effect. The agency looked at data from Florida and North Carolina and found decreases in fatalities and serious injuries to passenger vehicle occupants in a rear-end crash with a tractor-trailer.