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Rollover Resistance Ratings Information

Description of Rollover Resistance Rating
Most rollover crashes occur when a vehicle runs off the road and is tripped by a ditch, curb, soft soil, or other object causing it to rollover. These crashes are usually caused by driver behavior such as speeding or inattention. These are called single vehicle crashes because the crash did not involve a collision with another vehicle. More than 10,000 people die each year in all rollover crashes.

The Rollover Resistance Rating is an estimate of your risk of rolling over if you have a single vehicle crash. It does not predict the likelihood of that crash. The Rollover Resistance Rating essentially measures vehicle characteristics of center of gravity and track width to determine how "top-heavy" a vehicle is. The more "top-heavy" the vehicle, the more likely it is to roll over. The lowest rated vehicles (1-star) are at least four times more likely to roll over than the highest rated vehicles (5-stars).

The Rollover Resistance Ratings of vehicles were compared to 220,000 actual single vehicle crashes, and the ratings were found to relate very closely to the real-world rollover experience of vehicles.

While the Rollover Resistance Rating does not directly predict the risk of injury or death, keep in mind that rollovers have a higher fatality rate than other kinds of crashes. Remember: Even the highest rated vehicle can rollover, but you can reduce your chance of being killed in a rollover by about 75% just by wearing your seat belt.


Here are the Rollover Resistance Ratings:

In A Single Vehicle Crash, a vehicle with a rating of:

Five Stars - Has a risk of rollover of less than 10 percent
Four Stars - Has a risk of rollover between 10 percent and 20 percent
Three Stars - Has a risk of rollover between 20 percent and 30 percent
Two Stars - Has a risk of rollover between 30 percent and 40 percent
One Star - Has a risk of rollover greater than 40 percent

Return to May 2002 Newsletter


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