How has the number of rollover fatalities changed over time?
The annual number of fatalities in rollover crashes on US roads has increased as SUVs have become more popular. However, the size of the US vehicle fleet has grown more rapidly than the number of rollover fatalities, so the fatality rate based on the number of registered passenger vehicles in the fleet has declined consistently during the past 20 years, from 32 driver deaths per million registered vehicles in 1986 to 16 deaths per million in 2008. The percentage of fatalities in rollover crashes for each vehicle type has remained relatively unchanged.
