Nearly all vehicle-related injuries and deaths are classified in government reports as "Transportation-Related" regardless of what events led up to them, or the state of mind of the driver or drivers who caused the incident. The term "accident" in common usage covers a whole range of things from truly unintenced mishaps through cases in which someone in a state of rage speeds recklessly into a fatal crash, or when someone who has lost the capacity to drive safely does so anyway resulting in injuries or deaths.
Firearm-related deaths are always called homicides even when the shooter merely intended to cause injury, or when the shooter was brandishing a weapon and unintentionally fired it.
http://www.cdc.gov/ncipc/wisqars/