How do most vehicle rollovers occur?
From its studies of real-world single-vehicle crashes, NHTSA has determined that more than 90% of rollovers occur after a driver runs off of the road (see Figure 3). This does not refer to vehicles trying to negotiate difficult trails away from public roads. It refers to vehicles rolling over off of the pavement after the driver has lost control of the vehicle. Once the vehicle slides off of the pavement, a ditch, soft soil, curb or other tripping mechanism usually initiates the rollover.
