A car crash in Japan.

A traffic collision, also known as a motor vehicle collision or car crash, is when a vehicle hits another vehicle, person or object. Pedestrians, animals, road debris or other objects may be involved. Sometimes a trial occurs, in order to determine fault in a traffic collision.

Traffic collisions often result in injury, death, and property damage. They injure tens of millions of people every year, and kill usually a little more than a million.