Yes. That's the difference between murder (dead body - malice intended) and manslaughter (dead body - no malice intended but negligence involved). If you drive your car in such a manner as to negligently cause the death (or potential death) of someone, then you are a criminal. If you are following all the driving laws and cause the death of someone, you are unlikely to be charged with anything as it was probably truly an accident that you could not have prevented by doing something so basic as following the law.
And you want black boxes in the trunk or wherever to provide that information??? Be careful what you ask for, you might just get it.