A traffic collision, also known as a motor vehicle collision (MVC), traffic accident, motor vehicle accident, car accident, automobile accident, road traffic collision, road traffic accident, wreck, car crash, or car smash occurs when a vehicle collides with another vehicle, pedestrian, animal, road debris, or other stationary obstruction, such as a tree or utility pole. Traffic collisions may result in injury, death and property damage.

A number of factors contribute to the risk of collision, including vehicle design, speed of operation, road design, road environment, and driver skill, impairment, and behavior. Worldwide, motor vehicle collisions lead to death and disability as well as financial costs to both society and the individuals involved.

Road injuries resulted in 1.4 million deaths in 2013 up from 1.1 million deaths in 1990.[1] About 68,000 of these occurred in children less than five years old.[1] Almost all highincome countries have a decreasing death rates, while the majority of lowincome countries having increased deaths rates due to traffic collisions. Middleincome countries have the highest rate with 20 deaths per 100,000 inhabitants, 80% of all road fatalities by only 52% of all vehicles. While the death rate in Africa is the highest (24.1 per 100,000 inhabitants), the lowest rate is to be found in Europe