How will NHTSA combine scores the various tests? Will there be one overall score?
Starting with the 2004 model year, the rollover risk predictions will be based both on the vehicle’s static stability factor and its performance in the dynamic test. Officials at NHTSA have said there will be one overall score. The format of the rollover rating system used now (one to five stars) will remain unchanged. One star is for rollover risk greater than 40%; five stars, 10% or less.