What are the causes of accidents?

An accident is defined as any property damage, injury or death resulting from the unintentional motion of a motor vehicle, its loads or occupants. That being said most accidents come down to causes that can be directly related to human error. The error does not have to be the driver. An engineer could make a design mistake that is put into production. A mechanic can forget to tighten something. The owner can neglect to do maintenance on it. The tough part comes from the driving that was being done in the case of an accident. There are many many factors that can be present. The unknown factor is the other driver in the event of a 2 car accident.