Insurance institute boosts roof crush standards

February 10th, 2009 by Kurt Niland

rollover accident 150x150For years, the National Highway Traffic Safety Administration and the Alliance of Automobile Manufacturers have resisted even the slightest boost in roof crush standards. Now, the Insurance Institute for Highway Safety has stepped in to raise the bar on roof strength standards.

The IIHS performs dozens of crash tests every year, the results of which prompt manufacturers to improve many and performance features in their vehicles.

-minded buyers around the world turn to IIHS test scores to determine which vehicles rank the highest. Auto manufacturers who produce high-scoring models wear the ranking as a badge of honor. Other manufacturers will make improvements to their automobiles in an effort to win a higher grade on IIHS tests.

Now the IIHS has made stronger roofs requisite to earning its highest ranking. According to Adrian Lund, president of the IIHS, the organization found that it was time to require that the automakers do more to improve roof strength if they wanted to win a coveted ranking. Just a single-point increase in a vehicle’s roof strength reduces the risk of fatality by more than 20 percent, Lund said in a report by the Detroit News.

The NHTSA proposed a new standard requiring automobiles to withstand 2.5 times their own weight in static crush tests while leaving sufficient head room for an average size male. The old standard, established in the early 1970s, required cars to withstand just 1.5 times their own weight. The proposed improvements, however, were criticized by many advocates as being insufficient.

Starting in the fall or 2009, the IIHS will require cars to have a 4.0 roof crush rating for them to become a top pick.

“We see significant benefits in stronger vehicle roofs,” Lund told the Detroit News, adding that the NHTSA underestimated the number of injuries and fatalities that would be prevented by stronger roofs. Rollovers represent just 3 percent of all crashes, yet they account for one-third of all traffic fatalities.

The Alliance of Automobile Manufacturers resists increasing roof strength standards beyond 2.5 times the vehicle’s weight.

Wade Newton, spokesman for the Alliance, told the Detroit News that “Drivers and passengers are better served by a system of enhancements including improvements in vehicle stability, ejection mitigation, roof crush resistance as well as road improvement and behavioral strategies aimed at consumer education.”

Rollover accidents kill approximately 10,000 people every year and catastrophically injure 24,000.

  • I was quite surprised to read this "Rollover accidents kill approximately 10,000 people every year and catastrophically injure 24,000". This really a huge number, I wonder how all this take place! very scary!
  • Thank you so much for your comment. It is amazing when you start looking
    at the numbers of people injured or killed in these types of crashes
    every year. A large part of what we do is to help raise awareness so
    that people like yourself will have more information about safety, and
    will be armed to ask for protections from the manufacturers because you
    know the facts. We appreciate your feedback!
blog comments powered by Disqus

Comments are moderated and generally will be posted if they are on-topic and not abusive.