Vehicular homicide. Vehicular homicide is a crime that involves the death of a person other than the driver as a result of either criminally negligent or murderous operation of a motor vehicle. In cases of criminal negligence, the defendant is commonly charged with unintentional vehicular manslaughter. Vehicular homicide is similar to the offense, in some countries, of dangerous driving causing death. The victim may be either a person not in the car with the offending motorist, or a passenger in the vehicle with