Perhaps road accidents, or at least fatalities, can be reduced more than you realize.

You are talking past each others. The exemple of Australia (or was it new Zealand?) shows that accidents can be lowered, as much as thé exemple of south Africa shows they can't.

I've always found this misunderstanding fascinating; it touches on the physical reality of sociological laws, the origin and purpose of morality, as well of course as supporting in part the modern political divides.