Rollover crashes are dangerous accidents that have a greater fatality rate than other kinds of accidents. They are rare, but deadly events, claiming one-third of passenger vehicle deaths while accounting for only 3 percent of all crashes.
Tripped and un-tripped rollover accidents are the two different types of these kinds of crashes. Contact with external forces, such as curbs or collisions with other vehicles can lead to tripped rollovers. In fact, the most common scenario for a tripped rollover happens when a vehicle’s tires strike the curb as it slides sideways, digging into soft ground on the shoulder of the road causing a sudden increase in lateral force.
Untripped rollovers happen when a vehicle is destabilized by cornering forces. As a vehicle turns a corner, three forces act on it: tire forces, inertia, and gravity. The forces from the tires act below the vehicle’s center of mass, pushing it toward the center of the curve. Inertia acts horizontally away from the center of the turn. When these two forces overcome the force of gravity, the vehicle begins to roll over. Read the rest of this entry »