It is true that one can <i>substantially</i> control whether they injure someone.  It is not true that one can <i>perfectly</i> control whether they injure someone (short of abstaining entirely from driving).<p>Moreover, the word &quot;accident&quot; does not in any way imply that the result could not have been avoided if different decisions were made or more care were taken - that is almost universally the case for &quot;accidental&quot; things.