Car accidents are a big problem in the United States. Some accidents are caused by bad weather. When roads are icy or wet, it can be difficult to Control the ear. Other accidents result from problems with the dar. Even a small problem like a flat tire cam be serious it the car is going fast. bad roads are an cause of accidents. Some accidents happen because the driver falls asleep. but the most common cause of accidents is drunk driving Drivers who have had too much alcohol cause many injuries and deaths.