Increases in safety expenditures do seem to result in lower fatality rates.
More research is needed to determine which safety expenditures produce the best results.
The study's findings indicated that attempts to achieve a reduction in both the highway fatality and injury rates simultaneously are similar to performing tasks that are mutually exclusive. Any successful attempt at saving a life will add one to the list of injuries, unless the accident can be prevented from happening. States that experienced the lowest rates of fatalities suffered from the highest rates of injuries. Possible reasons may include a shorter link in the decision-making process or a possible reduction in the conflicts of interest among the members of upper management. Chance, however, may be the answer for the existence of this relationship.