Rollovers are complex car accidents. There are many causes, including:
- Speed. A vehicle going too fast is at a greater risk of rolling over. This is particularly true when the vehicle is going down a hill and tries to make a left- or right-hand turn.
- Alcohol. Alcohol use is associated with around half of all fatal rollover accidents. A drunk driver can go off the road or take some other action that increases the risk of a rollover.
- Center of gravity. A vehicle with a high center of gravity is at risk of rolling over. Tractor trailers in particular have a high center of gravity, as do SUVs. However, the SUV industry has taken great pains to make them safer recently, which has reduced fatalities.
Interesting, according to NHTSA, about 85% of all rollover fatalities occurred in single-vehicle accidents. This means that most fatalities are not caused by another driver who collides with another vehicle.